Texas Instruments DLPC3430, DLPC3432, DLPC3433, DLPC3435, DLPC3438 Programmer's Manual

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DLPC3430, DLPC3432, DLPC3433, DLPC3435 and DLPC3438 Software

Programmer's Guide

Literature Number: DLPU020C

July 2014–Revised May 2018

Contents

1 Trademarks......................................................................................................................... 7

2 Introduction......................................................................................................................... 7

2.1 Software Programmer’s Guide Overview ............................................................................. 7

3 Interface Specification .......................................................................................................... 8

3.1 I

4 System Initialization ............................................................................................................. 8

4.1 Boot ROM Concept ...................................................................................................... 8

4.2 Resident Boot Software ................................................................................................. 8

4.3 HOST_IRQ Initialization Sequence .................................................................................... 8

5 Software Interface ................................................................................................................ 9

5.1 I

Revision History.......................................................................................................................... 68

C Interface and Ports for DLPC343x................................................................................. 8

C Considerations ....................................................................................................... 9

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1 DLPC343x Embedded Configuration...................................................................................... 7

2 HOST_IRQ Timing Diagram................................................................................................ 9

3 Write Parameters........................................................................................................... 11

4 Return Parameters......................................................................................................... 15

5 Byte 1 Write Parameter.................................................................................................... 17

6 Byte 2 Write Parameter.................................................................................................... 17

7 Example of Solid Field Test Pattern (Red).............................................................................. 19

8 Example of Fixed Step Horizontal Ramp Test Pattern................................................................ 20

9 Example of Fixed Step Vertical Ramp Test Pattern ................................................................... 20

10 Example of Horizontal Lines Test Pattern .............................................................................. 21

11 Example of Vertical Lines Test Pattern.................................................................................. 21

12 Example of Diagonal Lines Test Pattern................................................................................ 22

13 Example of Grid Lines Test Pattern ..................................................................................... 23

14 Example of Checkerboard Test Pattern................................................................................. 23

15 Example of Color Bars Test Pattern..................................................................................... 24

16 Return Parameters......................................................................................................... 24

17 Cropping Rules when Crop Size exceeds Input Size ................................................................. 28

18 Write Parameters........................................................................................................... 30

19 Rotation and Non-Rotation of Portrait Source.......................................................................... 31

20 Long-Axis Flip............................................................................................................... 31

21 Short-Axis Flip .............................................................................................................. 31

22 Return Parameters......................................................................................................... 32

23 Write Parameters........................................................................................................... 32

24 Return Parameters......................................................................................................... 33

25 Write Parameters........................................................................................................... 34

26 Return Parameters......................................................................................................... 35

27 Write Parameters........................................................................................................... 36

28 Byte 1 Return Parameters ................................................................................................ 37

29 Byte 2 Return Parameters ................................................................................................ 37

30 Bit Weight and Bit Order for Duty Cycle Data.......................................................................... 38

31 Maximum Number of Sequence Vectors................................................................................ 38

32 Return Parameters......................................................................................................... 39

33 Write Parameters........................................................................................................... 42

34 Return Parameters......................................................................................................... 43

35 Write Parameters........................................................................................................... 43

36 Return Parameters......................................................................................................... 44

37 Byte 1 Return Parameters ................................................................................................ 48

38 Return Parameters......................................................................................................... 49

39 Byte 1 Return Parameters ................................................................................................ 49

40 Bit Weight Definition for LABB Gain Value ............................................................................. 49

41 Byte 1 Write Parameters .................................................................................................. 50

42 Bit Weight Definition for the CAIC Maximum Gain Value............................................................. 50

43 Bit Weight Definition for the CAIC Clipping Threshold Value......................................................... 50

44 Bit Weight Definition for the CAIC RGB Intensity Gain Values....................................................... 51

45 Byte 1 Return Parameters ................................................................................................ 52

46 Write Parameters........................................................................................................... 52

47 Return Parameters......................................................................................................... 53

List of Figures

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List of Figures

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48 Byte 1 Write Parameters .................................................................................................. 53

49 Bit Weight Definition for the Optical Throw Ratio Data................................................................ 54

50 Visual Definition and Calculation for Optical Throw Ratio Data...................................................... 54

51 Bit Weight Definition for the Optical DMD Offset Data ................................................................ 54

52 Method for Calculation for Optical DMD Offset Data .................................................................. 55

53 Sign Determination for Optical DMD Offset Data ...................................................................... 55

54 Examples of Non-Inverted and Inverted Projector Orientations...................................................... 56

55 Byte 1 Return Parameters ................................................................................................ 57

56 Write Parameters........................................................................................................... 57

57 Pillar-Box Border Example ................................................................................................ 58

58 Return Parameters......................................................................................................... 58

59 Bit Weight Definition for the Projection Pitch Angle Data............................................................. 59

60 Examples of Projection Pitch Angle...................................................................................... 60

61 Byte 1 Return Parameters ................................................................................................ 61

62 Byte 1 Return Parameters ................................................................................................ 62

63 Byte 2 Return Parameters ................................................................................................ 62

64 Byte 3 Return Parameters ................................................................................................ 63

65 Byte 4 Return Parameters ................................................................................................ 63

66 Byte 1 Read Parameters.................................................................................................. 64

67 Byte 5 Return Parameters ................................................................................................ 65

68 Byte 6 Return Parameters ................................................................................................ 66

69 Return Parameters......................................................................................................... 66

70 Read Parameters........................................................................................................... 67

List of Figures

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1 I

2 Supported TI Generic Commands ....................................................................................... 10

3 Source Specific Associated Commands ................................................................................ 13

4 Common Commands ...................................................................................................... 14

5 Write Parameters........................................................................................................... 15

6 Return Parameters......................................................................................................... 16

7 Write Parameters........................................................................................................... 16

8 Foreground and Background Color Use ................................................................................ 18

9 Descriptions and Bit Assignments for Parameters 1-4 ................................................................ 18

10 Number of Bytes Required based on Pattern Selection .............................................................. 19

11 Parameter Bytes............................................................................................................ 24

12 Write Parameters........................................................................................................... 25

13 Return Parameters......................................................................................................... 26

14 Read Parameters........................................................................................................... 26

15 Return Parameters......................................................................................................... 26

16 Splash Screen Header Definitions ....................................................................................... 27

17 Write Parameters........................................................................................................... 27

18 Scaling Limits ............................................................................................................... 28

19 Return Parameters......................................................................................................... 28

20 Write Parameters........................................................................................................... 29

21 Return Parameters......................................................................................................... 30

22 Partial List of Commands that May Benefit from the Use of Image Freeze ........................................ 34

23 Splash Screen Example Using Image Freeze ......................................................................... 35

24 Test Pattern Generator Example Using Image Freeze................................................................ 35

25 Return Parameters......................................................................................................... 36

26 Return Parameters......................................................................................................... 37

27 Write Parameters........................................................................................................... 39

28 Write Parameters........................................................................................................... 40

29 Input Source Limits for Active Data ...................................................................................... 40

30 Return Parameters......................................................................................................... 41

31 Available Commands Based on LED Control Method................................................................. 42

32 Write Parameters........................................................................................................... 44

33 Return Parameters......................................................................................................... 45

34 Return Parameters......................................................................................................... 45

35 Write Parameters........................................................................................................... 46

36 Return Parameters......................................................................................................... 46

37 Return Parameters......................................................................................................... 47

38 Write Parameters........................................................................................................... 48

39 Write Parameters........................................................................................................... 49

40 LABB and CAIC Modes ................................................................................................... 51

41 Return Parameters......................................................................................................... 51

42 Write Parameters........................................................................................................... 53

43 Return Parameters......................................................................................................... 56

44 Write Parameters........................................................................................................... 59

45 Return Parameters......................................................................................................... 60

46 Return Parameters......................................................................................................... 61

47 Return Parameters......................................................................................................... 62

List of Tables

C Write and Read Transactions.......................................................................................... 9

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List of Tables

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48 Return Parameters......................................................................................................... 64

49 Read Parameters........................................................................................................... 64

50 Return Parameters......................................................................................................... 65

51 Controller Device ID Decode ............................................................................................. 66

52 DMD Device ID Reference Table ........................................................................................ 67

53 Return Parameters......................................................................................................... 67

List of Tables

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...

LED_SEL(2)

DC Supplies

BAT

1.1 V

WVGA

DDR DMD

DLP2010

(WVGA

DMD)

RESETZ

Included in DLP® Chip Set

CMP_PWM

1.8 V

PROJ_ON

2.3 to 5.5 V

CMP_OUT

Projector Module Electronics

INTZ

DLPA200x

PARKZ

1.1 V

1.8 V

VCORE

VIO

Illumination

Optics

BIAS, RST, OFS

Thermistor

LABB

I2C

Parallel I/F

HOST_IRQ

VCC_INTF

EEPROM

DLPC343x

VCC_FLSH

SPI_1

I2C_1

SYSPWR

1.8 V

Other

Supplies

1.1-V Reg

Sub-LVDS DATA

CTRL

Cal data

(optional)

FLASH, SDRAM

Keypad

Front-End

Chip

- OSD

- AutoLock

- Scaler

- Microcontroller

HDMI

Receiver

Triple

ADC

Charger

DC_IN

VDD

On/Off

HDMI

VGA

SD Card

Reader, and

so forth

(optional)

FLASH

VLED

BLUE

GREEN

RED

Current

Sense

Spare R/W

GPIO

TVP5151

Video

Decoder

CVBS

BT.656

Keystone

Sensor

WPC

GPIO_8 (Normal Park)

1.8 V VSPI

4 SPI_0

eDRAM

DLPC3430, DLPC3432, DLPC3435, DLPC3433, and

DLPC3438 Software Programmer’s Guide

1 Trademarks

LightCrafter is a trademark of Texas Instruments.

2 Introduction

2.1 Software Programmer’s Guide Overview

This guide details the software interface requirements for a DLPC343x ASIC-based system. It defines all applicable communication protocols including I2C initialization, default settings and timing. The DLPC343x system can be used in Figure 1.

Programmer's Guide

DLPU020C–July 2014–Revised May 2018

Figure 1. DLPC343x Embedded Configuration

2.1.1 I2C-Based Command Data Interface

The legacy interface configurations make use of an I2C interface for commands and a 24-bit parallel interface.

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Programmer’s Guide

DLPC3430, DLPC3432, DLPC3435, DLPC3433, and DLPC3438 Software

Interface Specification

3 Interface Specification

The protocol used in communicating information to DLPC343x consist of a serial data bus conforming to the Philips I2C specification, up to 100 kHz. MIPI DSI is supported in DLPC343x, but this feature is not supported in LightCrafter™ Display EVM.

3.1 I2C Interface and Ports for DLPC343x

DLPC343x commands are executed using I2C and support two I2C ports, port-0 and port-1. Port-0 is primarily used for command and control interface. While using this port, DLPC343x behaves as

an I2C slave.

4 System Initialization

This section describes the methodology used for system initialization.

4.1 Boot ROM Concept

The DLPC343x employs a boot ROM and associated boot software. This resident boot code consists of the minimum code necessary to complete the program loading. For most DLPC343x product configurations, an external flash device can store the main application code, along with the other configuration and operational data required by the system for normal operation.

4.2 Resident Boot Software

The resident boot code consists of the minimum code necessary to load the ARM software from flash to internal RAM for execution.

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4.3 HOST_IRQ Initialization Sequence

HOST_IRQ is a signal indicating the status of DLPC343x initialization. While reset is applied, HOST_IRQ resets to tri-state (an external pullup pulls the line high). HOST_IRQ remains tri-state (pulled high externally) until the microprocessor boot completes. While the signal is pulled high, the controller performs boot-up and auto-initialization.

Immediately after boot-up, the microprocessor drives HOST_IRQ to a logic high state to indicate that the controller is performing auto-initialization (no real state change occurs on the external signal). Upon completion of auto-initialization, ARM software sets HOST_IRQ to a logic low state to indicate the completion of auto-initialization. At the falling edge, the system is said to enter the INIT_DONE state.

After auto-initialization completes, HOST_IRQ generates a logic high interrupt pulse to the host through software control; this interrupt indicates that the controller detects an error condition or requires service.

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RESETZ

500 ms max

I2C access to DLPC343x should not start until HOST_IRQ goes low (this should occur within 500 ms from the release of RESETZ.

HOST_IRQ

(with External Pullup)

0 ms min

(INIT_BUSY)

(ERR IRQ)

3 µs min

An active-high pulse on HOST_IRQ following the initialization period will indicate an error condition has been detected. The source of the error is reported in the system status.

The first falling edge of HOST_IRQ indicates auto-initialization done.

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5 Software Interface

There is generally one set of software commands supported by the DLPC343x controller.

Software Interface

Figure 2. HOST_IRQ Timing Diagram

5.1 I2C Considerations

5.1.1 I2C Transactions

5.1.1.1 Data Flow Control

5.1.2 List of System Write/Read Software Commands

Since all I2C commands are processed by software, only one type of I2C transaction is supported. This transaction type is shown in Table 1 for both writes and reads. The I2C interface supports variably-sized transactions for example, a one byte transaction, a nine byte transaction) to match the TI commands discussed later in this document.

Table 1. I2C Write and Read Transactions

Transaction Address

Write

Read Request

Read Response

(1)

The address corresponds to the chip address of the controller.

(2)

The subaddress will correspond to a TI command.

(3)

The data (if present) will correspond to any required command parameters.

36h (or 3Ah) Command value Parameter values

37h (or 3Bh) Parameter values

(1)

8-bits 8-bits 8-bit parameter bytes (0 → N)

8-bits 8-bit parameter bytes (0 → N)

Sub-Address

While the I2C interface inherently supports flow control by holding the clock, this is not sufficient for all transactions (for example, sequence and CMT updates). In this case, the host software should use the

(2)

Remaining Data Bytes

Read Short status to determine if the system is busy.

The commands supported by the I2C interfaces are discussed in the following sections.

(3)

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Programmer’s Guide

Software Interface

Command Type Command Description Reset Value OpCode (hex) Default Action Section

General Operation

Write Write Input Source Select 1 05 Test pattern Section 5.1.3.1

Write Write Write Test Pattern Select 7000h 0B White solid field Section 5.1.3.5

Write Write Splash Screen Select 0D User-specified Section 5.1.3.7

Write Write Image Crop

Write Write Display Size DMD Res 12 Section 5.1.3.12

Write Write Display Image Orientation 14 User-specified Section 5.1.3.14

Write Write Display Image Curtain 1 16 Black Section 5.1.3.16

Write Write Image Freeze 0 1A No freeze Section 5.1.3.18

Write Write LOOK Select 22 User-specified Section 5.1.3.20

Write Write Execute Batch File 0 2D Section 5.1.3.24 Write Write External Input Image Size DMD Res 2E Section 5.1.3.25

Write Write Splash Screen Execute 35 Section 5.1.3.27

Illumination Control

Write

Write Write RGB LED Enable 7h 52 Enabled Section 5.1.3.30

Write Write RGB LED Current 54 User-specified Section 5.1.3.32

Write Write RGB LED Max Current 5C User-specified Section 5.1.3.35

Image Processing Control

Write

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Table 2. Supported TI Generic Commands

Read Read Input Source Select 06 Section 5.1.3.2

Write External Video Source Format Select

Read Read Test Pattern Select 0C Section 5.1.3.6

Read Read Splash Screen Select 0E Section 5.1.3.8 Read Read Splash Screen Header 0F Section 5.1.3.9

Read Read Image Crop 11 Section 5.1.3.11

Read Read Display Size 13 Section 5.1.3.13

Read Read Display Image Orientation 15 Section 5.1.3.15

Read Read Display Image Curtain 17 Section 5.1.3.17

Read Read Image Freeze 1B Section 5.1.3.19

Read Read LOOK Select 23 Section 5.1.3.21

Read Sequence Header

Read

Attributes Read DMD Sequencer Sync

Read

Mode

Read Read External Input Image Size 2F Section 5.1.3.26

Write LED Output Control Method

Read LED Output Control

Read

Method

Read Read RGB LED Enable 53 Section 5.1.3.31

Read Read RGB LED Current 55 Section 5.1.3.33

Read CAIC LED Max Available

Read

Power

Read Read RGB LED Max Current 5D Section 5.1.3.36 Read Read CAIC RGB LED Current 5F Section 5.1.3.37

Write Local Area Brightness Boost Control

Read Local Area Brightness

Read

Boost Control

43h 07 RGB888 Section 5.1.3.3

ffffffff000000

00h

1 80

10 No crop Section 5.1.3.10

26 Section 5.1.3.22

2C Section 5.1.3.23

50 User-specified Section 5.1.3.28

51 Section 5.1.3.29

57 Section 5.1.3.34

Manual strength

control

81 Section 5.1.3.39

Section 5.1.3.38

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General Setup

Administrative Commands

Software Interface

Table 2. Supported TI Generic Commands (continued)

Command Type Command Description Reset Value OpCode (hex) Default Action Section

Write

Write Write CCA Control 1 86 Enabled Section 5.1.3.42

Write

Write Write Border Color 0 B2 Black Section 5.1.3.46

Write

Write CAIC Image Processing Control

Read CAIC Image Processing

Read

Control

Read Read CCA Control 87 Section 5.1.3.43

Write Keystone Correction Control

Read Keystone Correction

Read

Control

Read Read Border Color B3 Section 5.1.3.47

Write Keystone Projection Pitch Angle

Read Keystone Projection Pitch

Read

Angle

Read Read Short Status D0 Section 5.1.3.50 Read Read System Status D1 Section 5.1.3.51 Read Read System Software Version D2 Section 5.1.3.52 Read Read Communication Status D3 Section 5.1.3.53 Read Read Controller Device ID D4 Section 5.1.3.54 Read Read DMD Device ID D5 Section 5.1.3.55 Read Read Flash Build Version D9 Section 5.1.3.56

0 88 Disabled Section 5.1.3.44

0 BB 0 Pitch angle Section 5.1.3.48

84 User-specified Section 5.1.3.40

85 Section 5.1.3.41

89 Section 5.1.3.45

BC Section 5.1.3.49

5.1.3 System Write/Read Commands

5.1.3.1 Write Input Source Select (05h)

5.1.3.1.1 Write

This command selects the image input source for the display module.

5.1.3.1.2 Write Parameters

Figure 3 describes the command parameters.

Figure 3. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:2)

Reserved

b(1:0) Input Source:

• 0h: External Video Port

• 1h: Test Pattern Generator

• 2h: Splash Screen

• 3h: Reserved

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Default: 01h

NOTE: When selecting the external video port, there is a set of associated commands applicable

These associations are also shown in Table 3.

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only to this source selection. These associated commands are the Write External Input image Size and the Write External Video Source Format Select.

When selecting the test pattern generator, only one associated command is applicable to this source selection. This associated command is the Write Test Pattern Select command.

When selecting the splash screen, only two associated commands are applicable to this source selection. These associated commands are the Write Splash Screen Select and Write splash Screen Execute commands.

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Software Interface

Table 3. Source Specific Associated Commands

Source Specific Associated Commands

Write External Video Source Format Select Only N/A N/A Write External Input Image Size Only N/A N/A Write Test Pattern Select N/A Only N/A Write Splash Screen Select N/A N/A Only Write Splash Screen Execute N/A N/A Special

(1)

The Write Splash Screen Execute command is special in that there is no maintained state or history. Thus this command has no settings to be stored and reused by the system.

External Video Port Test Pattern Generator Splash Screen

Input Source Select Options

These commands (other than Write Splash Screen Execute) describe the characteristics of their associated source, and once these settings are defined the system stores them. Afterwards, each time an input source selection is made (using the Write Input Source Select command), the system remembers the settings described by the commands associated with the selected source, and automatically applies them. The user only needs to send these associated commands when the source is first defined, or when the source characteristics for that port must be changed. The appropriate associated commands must be updated when source characteristics change.

The user can send source-associated commands every time they make an input source selection. The source associated commands should be sent prior to sending the Write Input Source Select command. When source-associated commands are sent when that source is not active, the controller software saves the new settings, but does not execute these commands. When that source becomes active (via the Write Input Source Select command), the controller applies these new settings, as in the following example:

1. The user sends the following commands (active input source = test pattern generator):

• Write image Freeze = freeze

• Write External Video Source Format Select (settings stored, command not executed)

• Write External Input Image Size (settings stored, command not executed)

• Write Input Source Select = external port (see step 2 below)

• Write Image Freeze = unfreeze

2. When the Write Input Source Select command is received, the software applies the settings from these external video port-associated commands:

• External Video Source Format Select

• External input Image Size

If source-associated commands are sent for a source that is already active, the controller software executes these commands when received, as in the following example:

• The user sends the following commands (active input source = external video port): – Write Image Freeze = freeze – Write external Video Source Format Select (command executed) – Write Image Freeze = unfreeze

The rest of the commands that apply to image setup have settings applicable across all source selections, and typically remain the same across the three input source selections. A few examples are Write Display Size and Write Display Image Orientation. A representative list of these commands is shown in Table 4.

(1)

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Table 4. Common Commands

Common Commands

Write Image Crop Common Common Common Write Display Image Size Common Common Common Write Keystone Correction Control Common Common Common Write Display Image Orientation Common Common Common Write Display Image Curtain Common Common Common Write Look Select Common Common Common Write Local Area Brightness Boost Control Common Common Common Write CAIC Image Processing Control Common Common Common

External Video Port Test Pattern Generator Splash Screen

Input Source Select Options

While the values for these commands may be the same across the different input source types, the hardware settings may change (for example: display image size = 1080p = DMD size – the external port input source size is WXGA, which is scaled up to the display size of 1080p. If the user changes to the TPG Input Source, the size of the test pattern must match the size of the DMD. Therefore, the scaler settings must to be changed). The controller software manages the underlying hardware settings. This also applies to those commands which specify automatic operation. While the automatic setting remains the same, the underlying algorithm might change its settings based on the characteristic of the selected source.

NOTE: The user is required to specify the active data size for all external input sources, using the

Write Input Image Size command.

NOTE: When a test pattern is selected, it is generated at the resolution of the DMD, modified by the

settings specified by the Write Image Crop command, and displayed at the resolution specified by the Write Display Size command.

NOTE: The user should see the Write Image Freeze command for information on hiding on-screen

artifacts when selecting an input source.

5.1.3.2 Read Input Source Select (06h)

5.1.3.2.1 Read

This command reads the state of the image input source for the display module.

5.1.3.2.2 Read Parameters

This command has no command parameters.

5.1.3.2.3 Return Parameters

Figure 4 describes the return parameters.

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Figure 4. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:2)

Reserved

b(1:0) Input source

• 0h: External video port

• 1h: Test Pattern generator

• 2h: Splash screen

• 3h: Reserved

5.1.3.3 Write External Video Source Format Select (07h)

5.1.3.3.1 Write

This command specifies the active external video port and the source data type for the display module.

5.1.3.3.2 Write Parameters

Table 5 describes the command parameters.

Table 5. Write Parameters

CMD Parameter Port Bits/Pixel Data Type

40h Parallel 16 RGB 565 16 1 Auto-select RGB CSC 41h Parallel 18 RGB 666 18 1 Auto-select RGB CSC 42h Parallel 24 RGB 888 8 3 Auto-select RGB CSC 43h Parallel 24 RGB 888 24 1 Auto-select RGB CSC 50h Parallel 18 YCbCr 666 18 1 Auto-select YCbCr CSC 51h Parallel 24 YCbCr 888 24 1 Auto-select YCbCr CSC

60h Parallel 16 YCbCr 4:2:2 88 8 2

61h Parallel 16 YCbCr 4:2:2 88 16 1

Bus

Width

Clks/Pix

Notes

Auto-select YCbCr CSC Auto-select 4:2:2 → 4:4:4

Default: 43h This command is used in conjunction with the Write Input Source Select command. This command

specifies which input port displays when the Write Input Source Select command selects external video port as the image source. The settings for this command are retained until changed using this command. These settings are automatically applied each time the external video port is selected.

When the external video port is selected as the input source, the software automatically selects and loads the proper CSC, based on the selected parameter of this command (appropriate matrix for RGB, selected matrix for YCbCr including offset).The appropriate data path is also automatically selected for 4:2:2 versus 4:4:4 processing.

The selection of video source port is independent from the selected command port. The user should review the notes for the Write Input Source Select command to understand the concept

of source-associated commands. This concept determines when source-associated commands are executed by the system. This command is a source-associated command.

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5.1.3.4 Read External Video Source Format Select (08h)

5.1.3.4.1 Read

This command reads the state of the active external video port and the source data type for the display module.

5.1.3.4.2 Read Parameters

This command has no read parameters.

5.1.3.4.3 Return Parameters

Table 6 describes the return parameters.

Table 6. Return Parameters

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CMD

Parameter

60h Parallel 16 YCbCr 4:2:2 88 8 2

61h Parallel 16 YCbCr 4:2:2 88 16 1

Port Bits/Pixel Data Type

5.1.3.5 Write Test Pattern Select (0Bh)

5.1.3.5.1 Write

This command specifies an internal test pattern for display on the display module.

5.1.3.5.2 Write Parameters

Table 7 describes the command parameters.

Bus

Width

Table 7. Write Parameters

Clks/Pix

Notes

Auto-select YCbCr CSC Auto-select 4:2:2 → 4:4:4

Parameter Bytes Description

Byte 1 TPG pattern select Byte 2 Foreground and background color (see Table 8) Byte 3 Parameter 1 (see Table 9) Byte 4 Parameter 2 (see Table 9) Byte 5 Parameter 3 (see Table 9) Byte 6 Parameter 4 (see Table 9)

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Figure 5. Byte 1 Write Parameter

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7)

Test pattern border:

• 00h: Disabled

• 01h: Enabled b(6:4) Reserved b(3:0) Left pattern select:

• 00h: Solid field

• 01h: Fixed step horizontal ramp

• 02h: Fixed step vertical ramp

• 03h: Horizontal lines

• 04h: Diagonal lines

• 05h: Vertical lines

• 06h: Horizontal and vertical grid

• 07h: Checkerboard

• 08h: Color bars

• 09h-0Fh: Reserved

Byte 1 default: 00h

Figure 6. Byte 2 Write Parameter

MSB Byte 2 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7)

Reserved

b(6:4) Foreground color:

• 0h: Black

• 1h: Red

• 2h: Green

• 3h: Blue

• 4h: Cyan

• 5h: Magenta

• 6h: Yellow

• 7h: White b(3:0) Reserved b(2:0) Background color:

• 0h: Black

• 1h: Red

• 2h: Green

• 3h: Blue

• 4h: Cyan

• 5h: Magenta

• 6h: Yellow

• 7h: White

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Table 8. Foreground and Background Color Use

Pattern

Solid field Yes No Fixed step horizontal ramp Yes No Fixed step vertical ramp Yes No Horizontal lines Yes Yes Vertical lines Yes Yes Diagonal lines Yes Yes Grid lines Yes Yes Checkerboard Yes Yes Color bars No No

Foreground Color Background Color

Byte 2

Byte 2 default: 70h

Table 9. Descriptions and Bit Assignments for Parameters 1-4

Pattern

Solid field N/A N/A N/A N/A Fixed step

horizontal ramp Fixed step

vertical ramp Horizontal lines N/A N/A

Vertical lines N/A N/A Diagonal lines N/A N/A Vertical spacing 8 Horizontal spacing 8

Grid lines

Checkerboard Color bars N/A N/A N/A N/A

Byte 6 (Parameter 4) Byte 5 (Parameter 3) Byte 4 (Parameter 2) Byte 3 (Parameter 1)

Description Bits Description Bits Description Bits Description Bits

N/A N/A End value 8 Start value 8

Vertical

background line

width

Number of vertical

checkers

Vertical foreground

line width

Number of vertical

checkers

Background line

Horizontal

background line

Number of

horizontal checkers

width

8 Foreground line width 8

Horizontal foreground

line width

Number of horizontal

checkers

This command is used in conjunction with the Write Input Source Select command. This command specifies which test pattern displays when the Write Input Source Select command selects test pattern generator as the image source. The settings for this command are retained until changed using this command. These settings automatically apply each time the test pattern generator is selected.

Batch files are created and stored in flash, and recall the settings for predefined test patterns. Test patterns are created at the resolution of the display (DMD), are modified by the Write Image Crop

command, and displayed at the resolution specified by the Write Display Size command. Test patterns display at the default frame rate 60 Hz. The Test Pattern Border Selection creates a white border, a single pixel wide and tall, around the specified

test pattern. The user must review the notes for the Write Input Source Select command to understand the concept of

source-associated commands. This concept determines when source-associated commands are executed by the system. This command is a source-associated command.

When a foreground or background color is not used, the bit values are ignored (see Table 8). If both foreground and background color are not used, or when a parameter byte (bytes 3 thru 6) is not used, the byte should not be sent. Table 10 shows the number of bytes required, based on the specified pattern.

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As noted in Table 8, the color for the solid field pattern is specified using the foreground color. An example of a solid field pattern is shown in Figure 7.

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Table 10. Number of Bytes Required based on Pattern Selection

Specified Pattern Number of Bytes Required

Solid field 2

Fixed step horizontal ramp 4

Fixed step vertical ramp 4

Horizontal lines 4

Vertical lines 4

Diagonal lines 4

Grid lines 6

Checkerboard 7

Color bars 1

Figure 7. Example of Solid Field Test Pattern (Red)

As noted in Table 8, the color for the fixed step horizontal ramp pattern is specified using the foreground color. As noted in Table 9, the user specifies the start value and the stop value for the ramp. For this pattern, the system automatically determines the step size based on the start and stop values and the size of the display (DMD). The minimum start value is 0, the maximum stop value is 255, and the start value must always be smaller than the stop value. For example, if the start value = 0, the stop value = 255, and the DMD resolution is 1280 wide, the step size would be 5 (1280 pixels / 256 values = 5). Thus every gray shade value from 0 to 255 would have a step size of 5 pixels (such that each step would have 5 columns of pixels with the same gray scale value). The gray scale value always increments by 1 for each step between the start and stop values. An example of a fixed step horizontal ramp pattern is shown in

Figure 8.

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As noted in Table 8, the color for the fixed step vertical ramp pattern is specified using the foreground color. As noted in Table 9, the user specifies the start value and the stop value for the ramp. For this pattern, the system automatically determines the step size based on the start and stop values and the size of the display (DMD). The minimum start value = 0, the maximum stop value = 255, and the start value must always be smaller than the stop value. For example, if the start value = 0, the stop value = 255, and the DMD resolution is 768 tall, then the step size would be 3 (768 pixels / 256 values = 3). Thus every value from 0 to 255 would have a step size of 3 pixels (such that each step would have 3 rows of pixels with the same gray scale value). The gray scale value always increments by 1 for each step between the start and stop values. An example of a fixed step vertical ramp pattern is shown in Figure 9.

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Figure 8. Example of Fixed Step Horizontal Ramp Test Pattern

Figure 9. Example of Fixed Step Vertical Ramp Test Pattern

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As noted in Table 8, the colors for the horizontal lines pattern are specified using both the foreground and background colors. The foreground color is used for the horizontal lines, and the background color is used for the space between the lines. As noted in Table 9, the user specifies the foreground line width, as well as the background line width. The user must determine the line spacing for each resolution display. For example, if the foreground line width = 1, and the background line width = 9, there would be a single pixel horizontal line on every tenth line. An example of a horizontal lines pattern is shown in Figure 10.

Software Interface

Figure 10. Example of Horizontal Lines Test Pattern

As noted in Table 8, the colors for the vertical lines pattern are specified using both the foreground and background colors. The foreground color is used for the vertical lines, and the background color is used for the space between the lines. As noted in Table 9, the user specifies the foreground line width, as well as the background line width. The user must determine the line spacing for each resolution display. For example, if the foreground line width = 1, and the background line width = 9, there would be a single pixel vertical line on every tenth line. An example of a vertical lines pattern is shown in Figure 11.

Figure 11. Example of Vertical Lines Test Pattern

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HORZSPACING

VERTSPACING

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As noted in Table 8, the colors for the diagonal lines pattern are specified using both the foreground and background colors. The foreground color is used for the diagonal lines, and the background color is used for the space between the lines. As noted in Table 9, the user specifies the horizontal and vertical line spacing. The line width is always one pixel. The user determines the line spacing for each resolution display. Both horizontal and vertical line spacing must use the same value, and are limited to values of 3, 7, 15, 31, 63, 127, and 255. Invalid values result in a communication error (invalid command parameter). An example of a diagonal lines pattern is shown in Figure 12.

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Figure 12. Example of Diagonal Lines Test Pattern

As noted in Table 8, the colors for the grid lines pattern are specified using both the foreground and background colors. The foreground color is used for the grid lines, and the background color is used for the space between the lines. As noted in Table 9, the user specifies the horizontal foreground and background line width, as well as the vertical foreground and background line width. The user determines the line spacing for each resolution display. For example, if the horizontal foreground line width = 1, and background line width = 9, there would be a single pixel horizontal line on every tenth line. If the vertical foreground line width = 1, and background line width = 9, there would be a single pixel vertical line on every tenth line. An example of a grid lines pattern is shown in Figure 13.

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Software Interface

Figure 13. Example of Grid Lines Test Pattern

As noted in Table 8, the colors for the checkerboard pattern are specified using both the foreground and background colors. The foreground color is used for one of the checkers, and the background color is used for the alternating checker. As noted in Table 9, the user specifies the number of horizontal checkers and the number of vertical checkers. For this pattern, the system automatically determines the checker size in each direction based on the number of checkers and the size of the display (DMD). For example, if the number of horizontal checkers = 4, the number of vertical checkers = 4, and the DMD resolution is 1280x720, the size of the horizontal checkers is 320 pixels, and the size of the vertical checkers is 180 pixels (1280 pixels / 4 checkers = 320 pixels: 720 pixels / 4 checkers = 180 pixels). An example of a checkerboard pattern (16 checkers by 12 checkers) is shown in Figure 14.

Figure 14. Example of Checkerboard Test Pattern

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As noted in Table 8 and Table 9, there is no user programmability associated the color bars test pattern. This pattern is made up of eight vertical color bars: white, yellow, cyan, green, magenta, red, blue, and black. For this pattern, the system automatically determines the width for each color bar based on the size of the display (DMD). An example of the color bars pattern is shown in Figure 15.

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Figure 15. Example of Color Bars Test Pattern

5.1.3.6 Read Test Pattern Select (0Ch)

5.1.3.6.1 Read

This command reads the state of the test pattern select command for the display module.

5.1.3.6.2 Read Parameters

This command has no read parameters.

5.1.3.6.3 Return Parameters

Figure 16 describes the return parameters.

Figure 16. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Table 11. Parameter Bytes

Parameter Bytes Description

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This command always returns six bytes, since the host does not know how many bytes are valid until the pattern is selected. All unnecessary bytes (see Table 10) are set to 0.

If a batch file is used to specify the parameters of the test pattern generator, those parameters are returned by this command.

5.1.3.7 Write Splash Screen Select (0Dh)

5.1.3.7.1 Write

This command selects a stored splash screen to be displayed on the display module.

5.1.3.7.2 Write Parameters

Table 12 describes the command parameters.

Parameter Bytes Description

Byte 1 Splash screen reference number (integer)

Default: User defined This command is used in conjunction with the Write Input Source Select and the Write Splash Screen

Execute commands, and specifies which splash screen is selected by the Input Source Select command. The settings for this command are retained until changed using this command.

The steps required to display a splash screen are:

1. Select the desired splash screen (using this command)

2. Change the input source to splash screen (using Write Input Source Select)

3. Start the splash screen retrieval process (using Write Splash Screen Execute). The splash screen is read from flash and sent down the processing path of the controller once, to be

stored in memory for display at the end of the processing path. As such, all image processing settings (such as image crop, image orientation, display size, splash screen select, splash screen as input source, and so forth) should be set by the user before executing the Write Splash Screen Execute command.

The availability of the splash screen is limited by the available space in flash memory. All splash screens must be landscape oriented.

For single-controller applications which support DMD resolutions of up to 1280 x 720, the minimum splash image size allowed for flash storage is 427 x 240, with the maximum being the resolution of the product DMD. Typical splash image sizes for flash are 427 x 240 and 640 x 360. The full resolution size is typically used to support an optical test splash screen.

For dual-controller applications which support DMD resolutions up to 1980 x 1080, the minimum splash image size allowed for flash storage is 854 x 480, with the maximum being the resolution of the product DMD. Typical splash image sizes for flash are 854 x 480. The full resolution size is typically used to support an optical test splash screen.

The user must specify how the splash image is displayed on the screen. Key commands for this are Write Image Crop and Write Display Size.

When this command is received while splash screen is the active source, other than storing the specified splash screen value, the only action taken by the controller software is to obtain the header information from the selected splash screen and store this in internal memory. When the Write Splash Screen Execute command is received, the controller software uses this stored information to set up the processing path prior to pulling the splash data from flash.

Software Interface

Table 12. Write Parameters

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5.1.3.8 Read Splash Screen Select (0Eh)

5.1.3.8.1 Read

This command reads the state of the Splash Screen Select command of the display module.

5.1.3.8.2 Read Parameters

This command has no command parameters.

5.1.3.8.3 Return Parameters

Table 13 describes the return parameters.

Table 13. Return Parameters

Parameter Bytes Description

Byte 1 Splash screen selected (integer)

5.1.3.9 Read Splash Screen Header (0Fh)

5.1.3.9.1 Read

This command reads the splash screen header information for the selected splash screen of the display module.

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5.1.3.9.2 Read Parameters

The read parameter specifies the splash screen for which the header parameters are returned. If a splash screen value is provided for an unavailable splash screen, this is considered an error (invalid command parameter value – communication status) and the command is be executed.

Parameter Bytes Description

5.1.3.9.3 Return Parameters

Table 15 describes the return parameters.

Parameter Bytes Description

Byte 10 Compression type Byte 11 Color order Byte 12 Chroma order

Table 14. Read Parameters

Byte 1 Splash screen reference number (integer)

Table 15. Return Parameters

Byte 1 Splash image width in pixels (LSByte) Byte 2 Splash image width in pixels (MSByte) Byte 3 Splash image height in pixels (LSByte) Byte 4 Splash image height in pixels (MSByte) Byte 5 Splash image size in bytes (LSByte) Byte 6 Splash image size in bytes Byte 7 Splash image size in bytes Byte 8 Splash image size in bytes (MSByte) Byte 9 Pixel format

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Parameter definitions are referenced in Table 16.

Table 15. Return Parameters (continued)

Parameter Bytes Description

Byte 13 Byte order

Table 16. Splash Screen Header Definitions

Parameter Values

0h = 24-bit RGB unpacked (not used)

Pixel format

Compression type

Color order

Chroma order

Byte order

1h = 24-bit RGB packed (not used) 2h = 16-bit RGB 5-6-5 3h = 16-bit YCbCr 4:2:2

0h = Uncompressed 1h = RGB RLE compressed 2h = User-defined (not used) 3h = YUV RLE compressed

0h = 00RRGGBB 1h = 00GGRRBB

0h = Cr is first pixel 1h = Cb is first pixel

0h = Little endian 1h = Big endian

Software Interface

5.1.3.10 Write Image Crop (10h)

5.1.3.10.1 Write

This command specifies which portion of the input image is captured and output from the cropping function of the display module.

5.1.3.10.2 Write Parameters

Table 17 describes the command parameters.

Parameter Bytes Description

Byte 1 Capture start pixel (LSByte) Byte 2 Capture start pixel (MSByte) Byte 3 Capture start line (LSByte) Byte 4 Capture start line (MSByte) Byte 5 Pixels per line (LSByte) Byte 6 Pixels per line (MSByte) Byte 7 Lines per frame (LSByte) Byte 8 Lines per frame (MSByte)

Default: Bytes (8:1) = FFh FFh FFh FFh 00h 00h 00h 00h (no cropping) The capture start parameters for this command are referenced to active data, and are 0-based (such that

specifying the capture start pixel to be a value of zero indicates the first active pixel of a line). The pixel/line and lines/frame parameters are 1-based (such that specifying the pixels/line value to be a value of 640 indicates 640 pixels to be captured).

Table 17. Write Parameters

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This command applies to all sources including test patterns, splash screens, and external sources. Making a change to the source or port does not impact the application of this command.

Cropping is done prior to the scaling function in the display module. As such, the size difference between the crop size and display size determines the amount of scaling needed in both dimensions. The scaling limits are listed in Table 18.

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Table 18. Scaling Limits

Controller Configuration

Single controller (excluding interlaced NTSC/PAL)

Single controller (interlaced NTSC/PAL only)

Dual controller

Maximum Horizontal

Interpolation Scale

Factor

3.0 3.0 3.0 3.0

3.0 3.0 3.0 6.0

Scaling not supported except for splash screen.

Maximum Horizontal

Decimation Scale

Factor

Scaling not supported except for splash screen.

Maximum Vertical

Interpolation Scale

Factor

Scaling not supported except for splash screen.

Maximum Vertical

Decimation Scale

Factor

Scaling not supported except for splash screen.

The scaling limits noted in Table 18 may not be possible depending on other factors, such as keystone correction. In this case, the system does what is requested even if this results in a broken image. The OEM is responsible for providing the appropriate input settings to meet the display needs.

If a crop size parameter exceeds the size of the input image, the input image size minus the capture start pixel/line is be used (as shown in Figure 17). The crop size parameters returned by the read image crop command are always the values specified by the Write Image Crop command.

Figure 17. Cropping Rules when Crop Size exceeds Input Size

5.1.3.11 Read Image Crop (11h)

5.1.3.11.1 Read

This command reads the state of the image crop command for the display module.

5.1.3.11.2 Read Parameters

This command has no command parameters.

5.1.3.11.3 Return Parameters

Table 19 describes the return parameters.

Table 19. Return Parameters

Parameter Bytes Description

Byte 1 Capture start pixel (LSByte) Byte 2 Capture start pixel (MSByte)

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Parameter Bytes Description

Byte 3 Capture start line (LSByte) Byte 4 Capture start line (MSByte) Byte 5 Pixels per line (LSByte) Byte 6 Pixels per line (MSByte) Byte 7 Lines per frame (LSByte) Byte 8 Lines per frame (MSByte)

All parameters for this command are referenced to active data, and are 1-based. (such that specifying the capture start pixel to be a value of one indicates the first active pixel of a line).

5.1.3.12 Write Display Size (12h)

5.1.3.12.1 Write

This command specifies the size of the active image to be displayed on the display module.

5.1.3.12.2 Write Parameters

Table 20 describes the command parameters.

Software Interface

Table 19. Return Parameters (continued)

Table 20. Write Parameters

Parameter Bytes Description

Byte 1 Pixels per line (LSByte) Byte 2 Pixels per line (MSByte) Byte 3 Lines per frame (LSByte) Byte 4 Lines per frame (MSByte)

Default: DMD resolution. This command specifies the size of the non-keystone corrected image to be output from the scaler

function, which is the size of the active displayed image. The parameter values are to be 1-based. (such that a value of 1280 pixels displays 1280 pixels per line). All sub-images (images smaller than the DMD display) are horizontally and vertically centered on the

display (DMD). If the display size exceeds the resolution of the DMD, this is considered an error (invalid command

parameter value – communication status) and the command does not execute. The display size parameters are checked against the DMD resolution in both rotation image orientations (non-rotated and rotated), and if the DMD resolution is exceeded in both of these orientations, it is considered an error. The system does not check for proper image orientation setup.

DMD resolution = 854 × 480:

• Example 1: Display size parameter = 480 × 854 (not an error)

• Example 2: Display size parameter = 900 × 320 (error)

• Example 3: Display size parameter = 500 × 600 (error) If the source, crop, and display parameter combinations exceed the capabilities of the scaler, the system

implements the user request as best it can, and the displayed image may be broken. The user must provide updated parameters to fix the image.

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5.1.3.13 Read Display Size (13h)

5.1.3.13.1 Read

This command reads the state of the display size command for the display module.

5.1.3.13.2 Read Parameters

This command has no read parameters.

5.1.3.13.3 Return Parameters

Table 21 describes the return parameters.

Parameter Bytes Description

Byte 1 Pixels per line (LSByte) Byte 2 Pixels per line (MSByte) Byte 3 Lines per frame (LSByte) Byte 4 Lines per frame (MSByte)

The parameter values are 1-based. (such that a value of 1280 pixels displays 1280 pixels per line).

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Table 21. Return Parameters

5.1.3.14 Write Display Image Orientation (14h)

5.1.3.14.1 Write

This command specifies the image orientation of the displayed image for the display module.

5.1.3.14.2 Write Parameters

Figure 18 describes the command parameters.

Figure 18. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:3)

Reserved

b(2) Short axis image flip:

• 0: Image not flipped.

• 1: Image flipped. b(1) Long axis image flip:

• 0: Image not flipped.

• 1: Image flipped. b(0) Image rotation (for portrait source only):

• 0: No rotation

• 1: Minus 90° rotation

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Flip Disabled Flip EnabledDMD

Non-Rotated Display -90o Rotated Display

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Default: User-defined

Figure 19 shows the result of non-rotation and rotation of a portrait source. If a portrait image is not

rotated, it is centered and padded with black bars.

Landscape images typically should not be rotated, but the system allows this as it may be appropriate for some situations or configurations. The user is responsible for determining if the result is acceptable.

Image rotation is allowed while keystone correction is enabled, though it may not be appropriate for all situations or configurations. The user is responsible for determining if the result is acceptable.

Software Interface

Figure 19. Rotation and Non-Rotation of Portrait Source

Figure 20. Long-Axis Flip

Figure 21 shows the short-axis flip.

Figure 21. Short-Axis Flip

5.1.3.15 Read Display Image Orientation (15h)

5.1.3.15.1 Read

This command reads the state of the displayed image orientation function for the display module.

5.1.3.15.2 Read Parameters

This command has no read parameters.

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5.1.3.15.3 Return Parameters

Figure 22 describes the return parameters.

Figure 22. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7:3)

Reserved

b(2) Short-axis image flip:

• 0: Image not flipped.

• 1: Image flipped. b(1) Long-axis image flip:

• 0: Image not flipped.

• 1: Image flipped. b(0) Image rotation (for portrait source only):

• 0: No rotation

• 1: Minus 90° rotation

5.1.3.16 Write Display Image Curtain (16h)

5.1.3.16.1 Write

This command controls the display image curtain for the display module.

5.1.3.16.2 Write Parameters

Figure 23 shows the command parameters.

Figure 23. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:4)

Reserved

b(3:1) Select curtain color:

• 0h: Black

• 1h: Red

• 2h: Green

• 3h: Blue

• 4h: Cyan

• 5h: Magenta

• 6h: Yellow

• 7h: White b(0) Curtain enable:

• 0: Curtain disabled

• 1: Curtain enabled

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Default: 01h The image curtain fills the entire display with a user-specified color. The curtain color specified by this

command is separate from the border color defined in the Write Border Color command, though both are displayed using the curtain capability.

5.1.3.17 Read Display Image Curtain (17h)

5.1.3.17.1 Read

This command reads the state of the image curtain control function for the display module.

5.1.3.17.2 Read Parameters

This command has no read parameters.

5.1.3.17.3 Return Parameters

Figure 24 describes the return parameters.

Figure 24. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:4)

Reserved

b(3:1) Select curtain color:

• 0h: Black

• 1h: Red

• 2h: Green

• 3h: Blue

• 4h: Cyan

• 5h: Magenta

• 6h: Yellow

• 7h: White b(0) Curtain enable:

• 0: Curtain disabled

• 1: Curtain enabled

5.1.3.18 Write Image Freeze (1Ah)

5.1.3.18.1 Write

This command enables or disables the image freeze function for the display module.

5.1.3.18.2 Write Parameters

Figure 25 describes the command parameters.

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Figure 25. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7:1)

Reserved

b(0) Image freeze:

• 0: Image freeze disabled

• 1: Image freeze enabled

Default: 00h The image freeze capability has two main functions. The first function allows the user to freeze the current

image on the screen. The second function allows the user (host system or OEM) to reduce or prevent system changes on the display as visual artifacts. In this second case, the image is frozen, system changes are made, and the image is unfrozen when complete. In all cases, when the image is unfrozen, the display shows the most resent input image. Input data between the freeze point and the unfreeze point is lost.

The controller software never automatically freezes or unfreezes the image. This applies when software is making updates to the system on its own volition, and for any operation commanded via the I2C interface. The controller software will not freeze or unfreeze the image for any reason except when explicitly commanded by the Write Image Freeze command.

The user must review the notes for the Write Input Source Select command to understand the concept of source-associated commands. This concept determines when source-associated commands are executed by the system.

If the OEM chooses not to make use of image freeze, they should change the source before changing the image parameters, to minimize transition artifacts.

5.1.3.18.3 Use of Image Freeze to Reduce On-Screen Artifacts

Commands that take a long time to process, require a lot a data to be loaded from flash, or change the frame timing of the system may create on-screen artifacts. The Write Image Freeze command can try and minimize, if not eliminate, these artifacts. The process is:

1. Send a Write Image Freeze command to enable freeze.

2. Send commands with the potential to create image artifacts.

3. Send a Write Image Freeze command to disable freeze. Because commands to the controller process serially, no special timing or delay is required between these

commands. The number of commands placed between the freeze and unfreeze should be small, as it is not desirable for the image to be frozen for a long period of time. A list of commands that may produce image artifacts is listed in Table 22. This is not an all-inclusive list, and the user is responsible for determining the correct use of the image freeze command.

Table 22. Partial List of Commands that May Benefit from the Use of Image Freeze

Command Command OpCode Notes

Write Input Source Select 05h

Write External Video Source Format Select 07h If changed while this source is the active source

Write Test Pattern Select 0Bh If changed while this source is the active source

Write Splash Screen Select 0Dh If changed while this source is the active source

Write Look Select 22h

Table 23 and Table 24 show a few examples of how to use the image freeze command.

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Write Display Image Curtain = enable Write Image Freeze = freeze Write Image Crop, Write Display Size, Write Display

Image Orientation

Write Splash Screen Select Write Input Source Select = splash

Write Splash Screen Execute Retrieves the desired splash screen image for display Write Image Freeze = unfreeze

The new splash image displays when the Write Splash Screen Execute command executes, regardless of the state of the Write Image Freeze command (due to the one time nature of the splash image). Write Image Freeze = unfreeze must still be executed.

Write Image Freeze = freeze Write Image Crop, Write Display Size, Write Display Image

Orientation, Write Test Pattern Select Write Input Source Select = test pattern generator

Write Image Freeze = unfreeze

Software Interface

Table 23. Splash Screen Example Using Image Freeze

Command Notes

May want to apply curtain if already displaying an unwanted image (such as a broken source)

Potential data processing commands that may be required for proper display of splash image. These must be set prior to write splash screen execute command to affect the splash screen image.

These must be set prior to write splash screen execute

Table 24. Test Pattern Generator Example Using Image Freeze

Command Notes

Potential data processing commands that may be required for proper display of test pattern image. These should be set before the Write Input Source Select command.

5.1.3.19 Read Image Freeze (1Bh)

5.1.3.19.1 Read

This command reads the state of the image freeze function for the display module.

5.1.3.19.2 Read Parameters

This command has no read parameters.

5.1.3.19.3 Return Parameters

Figure 26 describes the return parameters.

Figure 26. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:1)

Reserved

b(0) Image freeze:

• 0: Image freeze disabled

• 1: Image freeze enabled

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5.1.3.20 Write LOOK Select (22h)

5.1.3.20.1 Write

This command specifies the LOOK for the image on the display module.

5.1.3.20.2 Write Parameters

Figure 27 describes the command parameters.

Figure 27. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7:0)

LOOK number

Default: User-defined In this product, a LOOK typically specifies a target white point. The number of LOOKs available may be

limited by the available space in flash memory. This command allows the host to select a LOOK (target white point) from a number of LOOKs stored in

flash. Based on the LOOK selected and measured data obtained from an appropriate light sensor, the software automatically selects and loads the most appropriate sequence or duty cycle set available in the LOOK, to get as close as possible to the target white point.

LOOKs are specified in this byte by an enumerated value (such as 0,1,2,3). There must always be at least one LOOK, with an enumerated value of 0.

There are two other items that the host should specify in addition to the LOOK. These are:

• A desired degamma curve, achieved by selecting the appropriate degamma/CMT, which has the desired degamma curve and correct bit weights for the sequence selected.

• The desired color points, achieved by selecting the appropriate CCA parameters using the CCA select command.

5.1.3.21 Read LOOK Select (23h)

5.1.3.21.1 Read

This command reads the state of the LOOK select command for the display module.

5.1.3.21.2 Read Parameters

This command has no read parameters.

5.1.3.21.3 Return Parameters

Table 25 describes the return parameters.

Table 25. Return Parameters

Parameter Bytes Description

Byte 1 See Figure 28 Byte 2 Current red duty cycle (LSByte) Byte 3 Current red duty cycle (MSByte) Byte 4 Current green duty cycle (LSByte) Byte 5 Current green duty cycle (MSByte) Byte 6 Current blue duty cycle (LSByte) Byte 7 Current blue duty cycle (MSByte)

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Table 25. Return Parameters (continued)

Parameter Bytes Description

Byte 8 Current sequence frame rate (LSByte)

Byte 9 Current sequence frame rate Byte 10 Current sequence frame rate Byte 11 Current sequence frame rate (MSByte)

Figure 28. Byte 1 Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:0)

LOOK number

Figure 29. Byte 2 Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:0)

Sequence number

LOOKs are specified by an enumerated value (such as 0, 1, 2, 3). The current sequence frame rate is returned as a count specified in units of 66.67 ns (based on the

internal 15-MHz clock used to time between input frame syncs), and is valid regardless of whether the controller software made the sequence or duty cycle selection. The frame rate is specified in this way to enable fast and simple compares to the frame count by the software.

5.1.3.22 Read Sequence Header Attributes (26h)

5.1.3.22.1 Read

This command reads sequence header information for the active sequence of the display module.

5.1.3.22.2 Read Parameters

This command has no read parameters.

5.1.3.22.3 Return Parameters

Table 26 describes the return parameters.

Parameter Bytes Description

Byte 1 Red duty cycle (LSByte) (LOOK structure) Byte 2 Red duty cycle (MSByte) (LOOK structure) Byte 3 Green duty cycle (LSByte)(LOOK structure) Byte 4 Green duty cycle (MSByte) (LOOK structure) Byte 5 Blue duty cycle (LSByte) (LOOK structure) Byte 6 Blue duty cycle (MSByte) (LOOK structure) Byte 7 Maximum frame count (LSByte) (LOOK structure) Byte 8 Maximum frame count (LOOK structure) Byte 9 Maximum frame count (LOOK structure)

Byte 10 Maximum frame count (MSByte) (LOOK structure)

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Table 26. Return Parameters

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Table 26. Return Parameters (continued)

Parameter Bytes Description

Byte 11 Minimum frame count (LSByte) (LOOK structure) Byte 12 Minimum frame count (LOOK structure) Byte 13 Minimum frame count (LOOK structure) Byte 14 Minimum frame count (MSByte) (LOOK structure) Byte 15 Max number of sequence vectors (LOOK structure) Byte 16 Red duty cycle (LSByte) (Sequence structure) Byte 17 Red duty cycle (MSByte) (Sequence structure) Byte 18 Green duty cycle (LSByte) (Sequence structure) Byte 19 Green duty cycle (MSByte) (Sequence structure) Byte 20 Blue duty cycle (LSByte) (Sequence structure) Byte 21 Blue duty cycle (MSByte) (Sequence structure) Byte 22 Maximum frame count (LSByte) (Sequence structure) Byte 23 Maximum frame count (Sequence structure) Byte 24 Maximum frame count (Sequence structure) Byte 25 Maximum frame count (MSByte) (Sequence structure) Byte 26 Minimum frame count (LSByte) (Sequence structure) Byte 27 Minimum frame count (Sequence structure) Byte 28 Minimum frame count (Sequence structure) Byte 29 Minimum frame count (MSByte) (Sequence structure) Byte 30 Max number of sequence vectors (Sequence structure)

The sequence header data is stored in two separate flash data structures (the LOOK structure and the sequence structure), and the values from each should match.

The bit weight and bit order for the duty cycle data is shown in Figure 30.

Figure 30. Bit Weight and Bit Order for Duty Cycle Data

MSB Byte 2 LSB MSB Byte 1 LSB

b15 2

b14

b13

b12

b11

b10

–1

–2

–3

–4

–5

–6

–7

The duty cycle data is specified as each colors percent of the frame time. The sum of the three duty cycles must add up to 100. (for example, R = 30.5 = 1E80h , G = 50 = 3200h, B = 19.5 = 1380h)

The sequence maximum and minimum frame counts are specified in units of 66.67 ns (based on the internal 15 MHz clock used to time between input frame syncs). These are specified in this way to enable fast and simple compares to the frame count by the software.

The maximum number of sequence vectors byte is defined in Figure 31.

Figure 31. Maximum Number of Sequence Vectors

MSB Byte 15 and 30 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:4)

Reserved

b(3:0) Maximum number of sequence vectors

–8

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5.1.3.23 Read DMD Sequencer Sync Mode (2Ch)

5.1.3.23.1 Read

This command reads the state of the DMD sequencer sync mode function of the display module.

5.1.3.23.2 Read Parameters

This command has no read parameters.

5.1.3.23.3 Return Parameters

Figure 32 describes the return parameters.

Figure 32. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:2)

Reserved

b(1) System auto-sync setting:

• 0h: Lock to external VSYNC (auto-sync)

• 1h: Lock to internal VSYNC (auto-sync)

b(0) DMD sequencer sync mode:

• 0h: Auto-sync

• 1h: Force lock to internal VSYNC

The DMD sequencer sync mode response indicates the setting specified by the Write DMD Mode command.

System auto-sync setting response is only valid when the DMD sequencer sync mode is set to auto-sync (otherwise set to 0). The lock to the external VSYNC (auto-sync) option indicates that the system is using the externally provided VSYNC to drive the display module. The lock to the internal VSYNC option indicates that the system is using the internal VSYNC generator to drive the display module.

5.1.3.24 Write Execute Flash Batch File (2Dh)

5.1.3.24.1 Write

This command executes a flash batch file for the display module.

5.1.3.24.2 Write Parameters

Table 27 describes the command parameters.

Parameter Bytes Description

Byte 1 Batch file number

This command executes a batch file stored in the flash of the display module. Any system write command that can be sent by itself can be grouped together with other system commands or command parameters into a flash batch file, with the exception of all read commands.

The flash batch file numbers specified in this byte are enumerated values (such as 0,1,2,3). Flash batch file 0 is a special auto-init batch file that runs automatically by the DLPC343x software immediately after system initialization is complete. The flash batch file 0 is typically not called using the Write Execute Batch File command (although the system allows it). This special flash batch file specifies the source to be used (such as splash screen or data port) once the system initializes.

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Table 27. Write Parameters

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Embedding flash batch file calls within a flash batch file is not allowed (for example, calling another batch file from within a batch file is not allowed). To execute two batch files back to back, use back to back execute batch file commands.

The system allows adding an execution delay between commands within a flash batch file. This is done using the Write Flash Batch File Delay command.

The order of command execution for commands within a flash batch file is the same as if the commands are received over the I2C port.

5.1.3.25 Write External Input Image Size (2Eh)

5.1.3.25.1 Write

This command specifies the active data size of the external input image to the display module.

5.1.3.25.2 Write Parameters

Table 28 describes the command parameters.

Table 28. Write Parameters

Parameter Bytes Description

Byte 1 Pixels per line (LSByte)

Byte 2 Pixels per line (MSByte)

Byte 3 Lines per frame (LSByte)

Byte 4 Lines per frame (MSByte)

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Default: DMD resolution This command is used in conjunction with the Write Input Source Select command. This command

specifies the active data size of the input image to the system for all external video interfaces, when the Write Input Source Select command selects external video port as the image source. The settings for this command are retained until changed using this command. These settings automatically apply each time the external video port is selected.

The parameter values are 1-based. (for example, a value of 1280 pixels specifies 1280 pixels per line). The user should review the notes for the Write Input Source Select command to understand the concept

of source-associated commands. This concept determines when source-associated commands are executed by the system. This command is a source-associated command.

The maximum and minimum input values are shown in Table 29. Values outside of these ranges are flagged as an error (invalid command parameter), and the command does not execute.

Table 29. Input Source Limits for Active Data

Parameter Minimum Value Maximum Value

Input source active pixels per line (single controller) 320 1280

Input source active lines per frame (single controller) 200 800

Input source active pixels per line (dual controller) 1920

Input source active lines per frame (dual controller) 1080

(1)

Scaling is not supported for dual controller configurations.

5.1.3.26 Read External Input Image Size (2Fh)

(1)

1920 1080

(1)

5.1.3.26.1 Read

This command reads the specified data size of the external input image to the display module.

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5.1.3.26.2 Read Parameters

This command has no read parameters.

5.1.3.26.3 Return Parameters

Table 30 describes the return parameters.

Table 30. Return Parameters

Parameter Bytes Description

Byte 1 Pixels per line (LSByte)

Byte 2 Pixels per line (MSByte)

Byte 3 Lines per frame (LSByte)

Byte 4 Lines per frame (MSByte)

The parameter values are 1-based. (for example, a value of 1280 pixels specifies 1280 pixels per line). This command returns the value specified by the Write External Input Image Size command.

5.1.3.27 Write Splash Screen Execute (35h)

5.1.3.27.1 Write

This command starts the process of retrieving a splash screen from flash for display on the display module.

Software Interface

5.1.3.27.2 Write Parameters

This command has no write parameters. This command is used in conjunction with the Write Input Source Select and the Write Splash Screen

Select commands to start the process of retrieving a splash screen from flash for display. The splash screen is read from flash and sent down the processing path of the controller once, to be

stored in memory for display at the end of the processing path. All image processing settings (such as image crop, image orientation, display size, splash screen select, and splash screen as input source) should be set by the user before executing this command. Any data path processing changed after the splash screen has been executed requires this command to be re-executed before the result is seen on the display. Thus, the splash screen retrieval process repeats each time this command is received. See the Write Image Freeze command for more information on hiding on-screen artifacts when selecting and retrieving a splash image.

The user should review the notes for the Write Input Source Select command to understand the concept of source-associated commands. This concept determines when source-associated commands are executed by the system. This command is a source-associated command; however, this command has no maintained state or history and has no settings to be stored or reused by the system.

When this command is processed, the system automatically sets up the system color processing based on the splash header information, prior to sending the splash image down the data path.

5.1.3.28 Write LED Output Control Method (50h)

5.1.3.28.1 Write

This command specifies the method for controlling the LED outputs for the display module.

5.1.3.28.2 Write Parameters

Figure 33 describes the command parameters.

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Figure 33. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7:2)

Reserved

b(1:0) LED control method:

• 00: Manual RGB LED currents (disables CAIC algorithm)

• 01: CAIC (automatic) RGB LED power (enables CAIC algorithm)

• 10: Reserved

• 11: Reserved

Default: User-defined This command selects the method used to control the output of the red, green, and blue LEDs. Based on

the method chosen, a specific set of commands are available for controlling the LED outputs. These are shown in Table 31.

The manual RGB LED currents method provides for manual control of the LED currents, and disables the CAIC algorithm. The CAIC (automatic) RGB LED current control method provides automatic control of the LED currents using the CAIC algorithm.

Table 31. Available Commands Based on LED Control Method

LED Control Method Available Commands

Write RGB LED Enable Read RGB LED Enable

Manual RGB LED current control

CAIC (automatic) RGB LED current control

Write Manual RGB LED Current Read Manual RGB LED Current Write Manual RGB LED Max Current (see Section 5.1.3.35) Read Manual RGB LED Max Current (see Section 5.1.3.36)

Write RGB LED Enable Read RGB LED Enable Read CAIC LED Max Available Power Read CAIC LED RGB Current

5.1.3.29 Read LED Output Control Method (51h)

5.1.3.29.1 Read

This command reads the state of the LED output control method for the display module.

5.1.3.29.2 Read Parameters

This command has no read parameters.

5.1.3.29.3 Return Parameters

Figure 34 describes the return parameters.

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Figure 34. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:2)

Reserved

b(1:0) LED control method:

• 00: Manual RGB LED currents (CAIC algorithm disabled)

• 01: CAIC (automatic) RGB LED current control (CAIC algorithm enabled)

• 10: Reserved

• 11: Reserved

5.1.3.30 Write RGB LED Enable (52h)

5.1.3.30.1 Write

This command enables the LEDs for the display module.

5.1.3.30.2 Write Parameters

Figure 35 describes the command parameters.

Figure 35. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:3)

Reserved

b(2) Blue LED enable:

• 0: Blue LED disabled

• 1: Blue LED enabled

b(1) Green LED enable:

• 0: Green LED disabled

• 1: Green LED enabled

b(0) Red LED enable:

• 0: Red LED disabled

• 1: Red LED enabled

Default: 07h

5.1.3.31 Read RGB LED Enable (53h)

5.1.3.31.1 Read

This command reads the state of the LED enables for the display module.

5.1.3.31.2 Read Parameters

This command has no read parameters.

5.1.3.31.3 Return Parameters

Figure 36 describes the return parameters.

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Figure 36. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7:3)

Reserved

b(2) Blue LED enable:

• 0: Blue LED disabled

• 1: Blue LED enabled

b(1) Green LED enable:

• 0: Green LED disabled

• 1: Green LED enabled

b(0) Red LED enable:

• 0: Red LED disabled

• 1: Red LED enabled

5.1.3.32 Write RGB LED Current (54h)

5.1.3.32.1 Write

This command sets the current for the red, green, and blue LEDs of the display module.

5.1.3.32.2 Write Parameters

Table 32 describes the command parameters.

Parameter Bytes Description

Byte 1 Red LED current parameter (LSByte)

Byte 2 Red LED current parameter (MSByte)

Byte 3 Green LED current parameter (LSByte)

Byte 4 Green LED current parameter (MSByte)

Byte 5 Blue LED current parameter (LSByte)

Byte 6 Blue LED current parameter (MSByte)

Table 32. Write Parameters

Default: User-defined When an all-white image is displayed, this command allows the system white point to be adjusted while

establishing the total LED power. This is true whether the CAIC algorithm is enabled or disabled. The parameters specified by this command have a resolution of 10 bits, and are defined by the

appropriate DLPA200x specification. When the CAIC algorithm is disabled, this command directly sets the LED currents (the R, G, and B

values provided are sent directly to the DLPA200x device) regardless of the image being displayed. When the CAIC algorithm is enabled:

• This command directly sets the LED currents when an all-white image is displayed. If the image is changed from an all-white image, depending on the image the CAIC algorithm may alter one or more of the LED currents from those specified by this command, and the total LED power may drop. The Read CAIC RGB LED Current command can read the actual LED currents for the image currently displayed.

• In the case of an all-white image, the values read by the Read CAIC RGB LED Current command closely match, but may not exactly match, those requested using the Write RGB LED Current command. For an all-white image, the Read CAIC RGB LED Current command gives currents within +/-4 DLPA200x device current steps for each LED color relative to those requested by the Write RGB

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LED Current command.

• When the Write RGB LED Current command changes the LED currents, the LED current for any color should not be changed by more than +/-25% from the nominal current used for that color when the CAIC LUTs were created. No LED current should be set to a current value beyond the maximum value supported in the CAIC intensity-to-current LUT for the corresponding color.

• The maximum total LED power for any displayed image occurs for an all-white image, since the CAIC algorithm requests the CAIC LED maximum available power. The maximum available LED power for the CAIC is controlled by the Write RGB LED Current command, as this command controls currents for an all-white image. After the currents are adjusted, the Read CAIC LED Max Available Power command is used to see the maximum power in watts derived from the CAIC.

5.1.3.33 Read RGB LED Current (55h)

5.1.3.33.1 Read

This command reads the state of the current for the red, green, and blue LEDs of the display module.

5.1.3.33.2 Read Parameters

This command has no read parameters.

5.1.3.33.3 Return Parameters

Table 33 describes the return parameters.

Software Interface

Table 33. Return Parameters

Parameter Bytes Description

Byte 1 Red LED current parameter (LSByte) Byte 2 Red LED current parameter (MSByte) Byte 3 Green LED current parameter (LSByte) Byte 4 Green LED current parameter (MSByte) Byte 5 Blue LED current parameter (LSByte) Byte 6 Blue LED current parameter (MSByte)

See Section 5.1.3.32 for a detailed description of the return parameters. Unused most significant bits are set to 0.

5.1.3.34 Read CAIC LED Max Available Power (57h)

5.1.3.34.1 Read

This command reads the specified maximum LED power allowed for the display module.

5.1.3.34.2 Read Parameters

This command has no read parameters.

5.1.3.34.3 Return Parameters

Table 34 describes the return parameters.

Parameter Bytes Description

Byte 1 Maximum LED power (LSByte) Byte 2 Maximum LED power (MSByte)

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Table 34. Return Parameters

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The value is specified in watts × 100 (for example: 25.75 W = A0Fh). This command is only applicable when CAIC is enabled.

The CAIC maximum available LED power pertains if an all-white image is displayed where LED currents are set by the Write RGB LED Current command. The calculation is:

R duty cycle × R LED current × R LED voltage +

G duty cycle × G LED current × G LED voltage + B duty cycle × B LED current × B LED voltage.

For example: (.30 × .49 A × 2.0 V) + (.50 × .39 A × 3.1 V) + (.20 × .39 A × 3.1 V) = (.30 × .980 W) + (.50 ×

1.209 W) + (.20 × 1.209 W) = 1.140 W

5.1.3.35 Write RGB LED Max Current (5Ch)

5.1.3.35.1 Write

This command specifies the maximum LED current allowed for each LED in the display module.

5.1.3.35.2 Write Parameters

Table 35 describes the command parameters.

Table 35. Write Parameters

Parameter Bytes Description

Byte 1 Maximum red LED current (LSByte) Byte 2 Maximum red LED current (MSByte) Byte 3 Maximum green LED current (LSByte) Byte 4 Maximum green LED current (MSByte) Byte 5 Maximum blue LED current (LSByte) Byte 6 Maximum blue LED current (MSByte)

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Default: User defined This command sets the maximum LED currents that can be used when CAIC is enabled or disabled.

When CAIC is enabled, the maximum LED currents may be further limited by the CAIC LUTs stored in the flash.

5.1.3.36 Read RGB LED Max Current (5Dh)

5.1.3.36.1 Read

This command reads the specified maximum LED current allowed for each LED in the display module.

5.1.3.36.2 Read Parameters

This command has no read parameters.

5.1.3.36.3 Return Parameters

Table 36 describes the return parameters.

Table 36. Return Parameters

Parameter Bytes Description

Byte 1 Maximum red LED current (LSByte) Byte 2 Maximum red LED current (MSByte) Byte 3 Maximum green LED current (LSByte) Byte 4 Maximum green LED current (MSByte)

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Table 36. Return Parameters (continued)

Parameter Bytes Description

Byte 5 Maximum blue LED current (LSByte) Byte 6 Maximum blue LED current (MSByte)

See the Section 5.1.3.32 for a detailed description of the return parameters. Unused most significant bits are set to 0.

5.1.3.37 Read CAIC RGB LED Current (5Fh)

5.1.3.37.1 Read

This command reads the state of the current for the red, green, and blue LEDs of the display module.

5.1.3.37.2 Read Parameters

This command has no read parameters.

5.1.3.37.3 Return Parameters

Table 37 describes the return parameters.

Table 37. Return Parameters

Software Interface

Parameter Bytes Description

The parameters returned by this command have a resolution of 10 bits, and are defined by the appropriate DLPA200x specification.

When the CAIC algorithm is enabled using the LED Output Control Method command:

• The Write RGB LED Current command directly sets the LED currents when an all-white image is displayed. If the image changes from an all-white image, depending on the image, the CAIC algorithm may alter one or more of the LED currents from those specified by the Write RGB LED Current command, and the total LED power may drop. The actual LED currents for the image currently displayed are read using the Read CAIC RGB LED Current command.

• In the case of an all-white image, the values returned by this command closely match, but may not exactly match, those specified using the Write RGB LED Current command. For an all-white image, this command provides values within +/- 4 DLPA200x device current steps for each LED color relative to those specified with the Write RGB LED Current command.

Use of this command is only appropriate when the LED output control method is set to CAIC (automatic) RGB LED current control.

Unused most significant bits are set to 0.

5.1.3.38 Write Local Area Brightness Boost Control (80h)

5.1.3.38.1 Write

This command controls the local area brightness boost image processing functionality for the display module.

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5.1.3.38.2 Write Parameters

Table 38 describes the command parameters.

Table 38. Write Parameters

Parameter Bytes Description

Byte 1 See Figure 37 Byte 2 LABB strength setting

Figure 37. Byte 1 Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7:4)

Sharpness strength b(3:2) Reserved b(1:0) LABB control:

• 0h: Disabled

• 1h: Enabled: Manual strength control (no light sensor)

• 2h: Enabled: Automatic strength control (uses light sensor)

• 3h: Reserved

Default: 0001h The key function of the LABB is to adaptively gain up darker parts of the image to achieve an overall

brighter image. For automatic strength control, a light sensor automatically adjusts the applied image strength based on

the measured black level of the screen, or the ambient lighting level of the room. For LABB strength, 0 indicates no boost applied and 255 indicates the maximum boost viable in a product.

The strength is not a direct indication of the gain, since the gain varies depending on the image content. Sharpness strength ranges from 0 to 15, with 0 indicating sharpness disabled and 15 indicating the

maximum sharpness. The LABB function must be enabled (either manual or automatic) to make use of sharpness.

LABB is supported in TPG, splash, and external input mode, but auto-disabled in curtain mode.

5.1.3.39 Read Local Area Brightness Boost Control (81h)

5.1.3.39.1 Read

This command reads the state of the local area brightness boost image processing functionality for the display module.

5.1.3.39.2 Read Parameters

This command has no read parameters.

5.1.3.39.3 Return Parameters

Figure 38 describes the return parameters.

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Figure 38. Return Parameters

Parameter Bytes Description

Byte 1 See Figure 39 Byte 2 LABB strength setting Byte 3 LABB gain value

Figure 39. Byte 1 Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:4)

Sharpness strength b(3:2) Reserved b(1:0) LABB control:

• 0h: Disabled

• 1h: Enabled: Manual strength control (no light sensor)

• 2h: Enabled: Automatic strength control (uses light sensor)

• 3h: Reserved

Figure 40 shows the bit order and weighting for the LABB gain value, which ranges from 1 to 8 (the

controller software should limit the lower value to 1).

Figure 40. Bit Weight Definition for LABB Gain Value

b7 b6 b5 b4 b3 b2 b1 b0

–1

–2

–3

–4

The software equation to calculate LABB Gain as a fixed point value is shown below:

LABB_gain = add_8lsb(APL) / pre_LABB_APL (//add 8 LSBs (u8.0 / u8.0 = u8.8 / u8.0 = u8.8)

5.1.3.40 Write CAIC Image Processing Control (84h)

5.1.3.40.1 Write

This command controls the CAIC functionality for the display module.

–5

5.1.3.40.2 Write Parameters

Table 39 describes the command parameters.

Parameter Bytes Description

Byte 1 See Figure 41

Byte 2 CAIC maximum lumens gain

Byte 3 CAIC clipping threshold

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Table 39. Write Parameters

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Figure 41. Byte 1 Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7)

CAIC gain display enable:

• 0h: Disabled

• 1h: Enabled

b(6) CAIC gain display scale:

• 0h: 100% = 1024 pixels

• 1h: 100% = 512 pixels

b(5:0) Reserved

Default: User-defined The CAIC algorithm (Content Adaptive Illumination Control) provides adaptive control of the LED currents

and the digital gain applied to the image. The CAIC algorithm is enabled or disabled based on the method of LED current control selected by the

OEM using the Write LED Output Control Method command. When enabled, the CAIC algorithm provides automatic control of the LED currents as specified by this command and the Write LED Output Control Method command.

The CAIC gain display provides a visual presentation of the instantaneous gain provided by the CAIC algorithm. This is typically used as a debug tool and to show the performance of the algorithm, and should never be used for normal operation. The display is composed of five bars, with the bottom three bars (green, red, and blue) showing the respective CAIC gain for each color. The top two bars are for TI debug use only. For the software, the CAIC gain display enable is controlled by CAIC_DEBUG_MODE (2:0), where disabled = 0h, and enabled = 3h. The display scale is set using CAIC_DEBUG_MODE(3).

Figure 42 shows the bit order and weighting for the CAIC maximum lumens gain value, which has a valid

range from 1.0 to 4.0. Values outside of this range are considered an error (invalid command parameter value – communication status) and the command does not execute.

Figure 42. Bit Weight Definition for the CAIC Maximum Gain Value

b7 b6 b5 b4 b3 b2 b1 b0

–1

–2

–3

–4

–5

The CAIC maximum lumens gain parameter sets the maximum lumens gain for a pixel as a result of both digital gain and increasing LED currents. The CAIC maximum lumens gain parameter also serves to bias the CAIC algorithm towards either constant power (variable brightness) or constant lumens (variable power). Some examples are listed below:

• Maximum gain value = 1.0: This biases performance to constant lumens. In this case, LED power is reduced for those images where this is possible, but lumens do not increase or decrease.

• Maximum lumens gain value = 4.0: This biases performance to constant power. In this case, power is held constant for most images, while the lumens are gained up. For the small percent of images where the gain exceeds 4.0, lumens stop increasing and the power is reduced.

Figure 43 shows the bit order and weighting for the CAIC clipping threshold value, which has a valid range

from 0.0% to 4.0%. Values outside of this range are considered an error (invalid command parameter value – communication status) and the command does not execute.

Figure 43. Bit Weight Definition for the CAIC Clipping Threshold Value

b7 b6 b5 b4 b3 b2 b1 b0

–1

–2

–3

–4

–5

–6

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Software Interface

The CAIC clipping threshold parameter sets the percentage of pixels clipped by the CAIC algorithm over the full frame of active data, due to the digital gain applied by the CAIC algorithm.

Figure 44 shows the bit order and weighting for the CAIC RGB intensity gain values, which have a valid

range from 0.0 to almost 1.0. Values outside of this range are considered an error (invalid command parameter value – communication status) and the command does not execute.

Figure 44. Bit Weight Definition for the CAIC RGB Intensity Gain Values

b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

Res Res Res Res Res Res 2

–1

–2

–3

–4

–5

–6

–7

–8

–9

CAIC can be enabled in TPG and external input mode, but auto-disabled in splash and curtain mode.

Table 40. LABB and CAIC Modes

Feature TPG Splash Curtain External Input

LABB Supported Supported Auto-disabled Supported

CAIC Supported Auto-disabled Auto-disabled Supported

Manual idle mode Supported Supported Auto-disabled Supported

5.1.3.41 Read CAIC Image Processing Control (85h)

5.1.3.41.1 Read

This command reads the state of the CAIC functionality within the display module.

–10

5.1.3.41.2 Read Parameters

This command has no read parameters.

5.1.3.41.3 Return Parameters

Table 41 describes the return parameters.

Parameter Bytes Description

Table 41. Return Parameters

Byte 1 See Figure 45 Byte 2 CAIC maximum lumens gain Byte 3 CAIC clipping threshold

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Figure 45. Byte 1 Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7)

CAIC gain display enable:

• 0h: Disabled

• 1h: Enabled

b(6) CAIC gain display scale:

• 0h: 100% = 1024 pixels

• 1h: 100% = 512 pixels

b(5:0) Reserved

Information on these parameters can be found in Section 5.1.3.40.

5.1.3.42 Write Color Coordinate Adjustment Control (86h)

5.1.3.42.1 Write

This command controls the CCA image processing functionality for the display module.

5.1.3.42.2 Write Parameters

Figure 46 describes the command parameters.

Figure 46. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:1)

Reserved

b(0) CCA enable:

• 0: Disabled

• 1: Enabled

Default: 01h This command is for TI debug purposes only. This function should remain enabled during normal

operation. When CCA is disabled, use an identity matrix.

5.1.3.43 Read Color Coordinate Adjustment Control (87h)

5.1.3.43.1 Read

This command reads the state of the CCA image processing within the display module.

5.1.3.43.2 Read Parameters

This command has no read parameters.

5.1.3.43.3 Return Parameters

Figure 47 describes the return parameters.

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Figure 47. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:1)

Reserved

b(0) CCA enable:

• 0: Disabled

• 1: Enabled

5.1.3.44 Write Keystone Correction Control (88h)

5.1.3.44.1 Write

This command controls the keystone correction image processing functionality for the display module.

5.1.3.44.2 Write Parameters

Table 42 describes the command parameters.

Table 42. Write Parameters

Parameter Bytes Description

Byte 1 See Figure 48 Byte 2 Optical throw ratio (LSByte) Byte 3 Optical throw ratio (MSByte) Byte 4 Optical DMD offset (LSByte) Byte 5 Optical DMD offset (MSByte)

Figure 48. Byte 1 Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:1)

Reserved

b(0) Keystone correction enable:

• 0: Disabled

• 1: Enabled

Default: All bytes: 00h Keystone correction digitally compensates for distorted images when the projector is tilted up or down.

Keystone correction is specified by the pitch angle (described in the Write Keystone Projection Pitch Angle command) and based on the throw ratio, vertical offset, and projector orientation. Each parameter is provided by this command. With this information, keystone correction corrects for both overall and local area aspect ratio distortion. For both full screen images and sub-images, the full active area of the DMD is keystone-corrected.

When keystone correction is enabled, the Write Border Color command sets the border color to black. Setting this parameter to any other color produces undesirable results.

Image rotation is allowed while keystone correction is enabled, but it may not be appropriate for all situations or configurations. The user is responsible for determining if the result is acceptable.

Figure 49 shows the bit order and weighting for the optical throw ratio data. Figure 50 defines how this

data is determined.

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Optical Axis

(Top View)

Image Width

Distance

Throw Ratio = Distance / Image Width Throw Ratio Register Value = 256 × Throw Ratio

Software Interface

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Figure 49. Bit Weight Definition for the Optical Throw Ratio Data

b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

–1

–2

–3

–4

–5

–6

–7

–8

Figure 50. Visual Definition and Calculation for Optical Throw Ratio Data

Figure 51 shows the bit order and weighting for the 2’s complement optical DMD offset data. Figure 52

shows how this data is calculated, while Figure 53 shows how the sign of the offset data is determined. The user must insure that both the value and the sign of the offset data are correctly determined.

Figure 51. Bit Weight Definition for the Optical DMD Offset Data

b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

–1

–2

–3

–4

–5

–6

–7

–8

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Optical Axis

(Side View)

Image Vertical

Center Axis

Positive Vertical Offset: Image Center Axis above Optical Axis (in non-inverted projector orientation)

Positive

Vertical Offset

Optical Axis

(Side View)

Image Vertical

Center Axis

Negative

Vertical Offset

Negative Vertical Offset: Image Center Axis below Optical Axis (in non-inverted projector orientation)

Optical Axis

(Side View)

Image Height

Vertical Offset = 2 × y / Image Height Vertical Offset Register Value = 256 × Vertical Offset (Image Height is always a positive value, ZKLOHµ\¶FDQEHSRVLWLYHRUQHJDWLYH)

Image Vertical

Center Axis

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Software Interface

Figure 52. Method for Calculation for Optical DMD Offset Data

Figure 53. Sign Determination for Optical DMD Offset Data

Figure 54 shows examples of non-inverted and inverted projector orientation. This information is required

for byte 1 of this command.

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(Side View)

Screen

Table Mount

Non-Inverted Orientation

Ceiling Mount

Inverted Orientation

Software Interface

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Figure 54. Examples of Non-Inverted and Inverted Projector Orientations

5.1.3.45 Read Keystone Correction Control (89h)

5.1.3.45.1 Read

This command reads the state of the keystone correction image processing within the display module.

5.1.3.45.2 Read Parameters

This command has no read parameters.

5.1.3.45.3 Return Parameters

Table 43 describes the return parameters.

Parameter Bytes Description

Byte 1 See Figure 55 Byte 2 Optical throw ratio (LSByte) Byte 3 Optical throw ratio (MSByte) Byte 4 Optical DMD offset (LSByte) Byte 5 Optical DMD offset (MSByte)

Table 43. Return Parameters

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Figure 55. Byte 1 Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:1)

Reserved

b(0) Keystone correction enable:

• 0: Disabled

• 1: Enabled

5.1.3.46 Write Border Color (B2h)

5.1.3.46.1 Write

This command specifies the onscreen border color for the display module.

5.1.3.46.2 Write Parameters

Figure 56 describes the command parameters.

Figure 56. Write Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:3)

Reserved

b(2:0) Display border color:

• 0h: Black

• 1h: Red

• 2h: Green

• 3h: Blue

• 4h: Cyan

• 5h: Magenta

• 6h: Yellow

• 7h: White

Default: 00h Whenever the display image size is smaller than the active area of the DMD, the border color is used for

all non-image pixels. Some examples using a border include a window box, pillar box, or letterbox image. To display a pillar box image (see Figure 57), the OEM can use the border color defined by this command. The border color specified by this command is separate from the curtain color defined in the Display

Image Curtain command, though both display using the curtain capability. Whenever the keystone capability is used, the OEM should set the border color to black. Setting this

parameter to any other color when keystone is enabled produces undesirable results.

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Active Image Area

DMD Display Area

DMD

Area

Pillar-Box

Border

Pillar-Box

Border

Software Interface

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Figure 57. Pillar-Box Border Example

5.1.3.47 Read Border Color (B3h)

5.1.3.47.1 Read

This command reads the state of the onscreen border color for the display module.

5.1.3.47.2 Read Parameters

This command has no read parameters.

5.1.3.47.3 Return Parameters

Figure 58 describes the return parameters.

Figure 58. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7)

Pillar-box border color source:

• 0h: Defined by this command

• 1h: Flash defined 24-bit color

b(6:3) Reserved

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b(2:0) Display border color:

• 0h: Black

• 1h: Red

• 2h: Green

• 3h: Blue

• 4h: Cyan

• 5h: Magenta

• 6h: Yellow

• 7h: White

For the special case of a pillar box image (see Figure 57), the OEM can use the border color defined by the Write Border Color command.

5.1.3.48 Write Keystone Projection Pitch Angle (BBh)

5.1.3.48.1 Write

This command specifies the projection pitch angle for the display module.

5.1.3.48.2 Write Parameters

Table 44 describes the command parameters.

Software Interface

Table 44. Write Parameters

Parameter Bytes Description

Byte 1 Projection pitch angle (LSByte) Byte 2 Projection pitch angle (MSByte)

Default: 0000h

Figure 59 shows the bit order and weighting for the 2’s complement projection pitch angle data.

Figure 59. Bit Weight Definition for the Projection Pitch Angle Data

b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

–1

–2

–3

–4

–5

–6

–7

–8

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(Side View)

0 to +N Degree Pitch Angle

Screen

0 to ±N Degree Pitch Angle

Ceiling Mount ± Non-Inverted Orientation

0 to +N Degree Pitch Angle

Ceiling Mount ± Inverted Orientation

Table Mount

Non-Inverted Orientation

Software Interface

This command is used in conjunction with the Write Keystone Correction Control command. The projection pitch angle is limited to the range of –40 to 40 degrees. Figure 60 shows examples of the

projection pitch angle.

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5.1.3.49 Read Keystone Projection Pitch Angle (BCh)

5.1.3.49.1 Read

This command reads the specified projection pitch angle for the display module.

5.1.3.49.2 Read Parameters

This command has no read parameters.

5.1.3.49.3 Return Parameters

Table 45 describes the return parameters.

5.1.3.50 Read Short Status (D0h)

Figure 60. Examples of Projection Pitch Angle

Table 45. Return Parameters

Parameter Bytes Description

Byte 1 Projection pitch angle (LSByte) Byte 2 Projection pitch angle (MSByte)

5.1.3.50.1 Read

This command provides a short system status for the display module.

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5.1.3.50.2 Read Parameters

This command has no read parameters.

5.1.3.50.3 Return Parameters

Table 46 describes the return parameters.

Table 46. Return Parameters

Parameter Bytes Description

Byte 1 Short System Status

Figure 61. Byte 1 Return Parameters

MSB Byte 1 – General Status LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7)

Boot/main application:

• 0: Boot

• 1: Main b(6:4) Reserved b(3) System error:

• 0: No error

• 1: Error b(2) Reserved b(1) Communication error:

• 0: No error

• 1: Error b(0) System initialization:

• 0: Not complete

• 1: Complete

The communication error bit indicates any error on the I2C command interfaces. Specific details about communication errors are available using the Read Communication Status command. Any errors other than a communication error are indicated by the system error bit. Specific details about system errors are available using the Read System Status command.

The communication error, and system error bits are cleared when the Read Short Status is read. The Read Short Status command should only be checked periodically, not continuously. Continuous access may severely impact system performance.

5.1.3.51 Read System Status (D1h)

5.1.3.51.1 Read

This command reads system status information for the display module.

5.1.3.51.2 Read Parameters

This command has no read parameters.

5.1.3.51.3 Return Parameters

Table 47 describes the return parameters.

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Table 47. Return Parameters

Parameter Bytes Description

Byte 1 DMD interface status Byte 2 LED status Byte 3 Internal interrupt status Byte 4 Misc. status

All system status error bits are cleared when the read system status is read.

Figure 62. Byte 1 Return Parameters

MSB Byte 1 – DMD Interface Status LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7:3)

Reserved

b(2) DMD training error:

• 0: No error

• 1: Error b(1) DMD interface error:

• 0: No error

• 1: Error b(0) DMD device error:

• 0: No error

• 1: Error

The system sets the DMD device error for the following conditions:

• The system cannot read the DMD device ID from the DMD.

• The system-specified DMD device ID does not match the actual DMD device ID. The system sets the DMD interface error when there are power management setup conflicts on this

interface. The system sets the DMD training error when the training algorithm can not find a data eye that meets the specified requirements.

Figure 63. Byte 2 Return Parameters

MSB Byte 1 – LED Status LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:6)

Reserved

b(5) Blue LED error:

• 0: No error

• 1: Error b(4) Green LED error:

• 0: No error

• 1: Error b(3) Red LED error:

• 0: No error

• 1: Error b(2) Blue LED state:

• 0: Off

• 1: On

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b(1) Green LED state:

• 0: Off

• 1: On b(0) Red LED state:

• 0: Off

• 1: On

Figure 64. Byte 3 Return Parameters

MSB Byte 1 – Internal Interrupt Status LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:2)

Reserved

b(1) Sequence error:

• 0: No error

• 1: Error b(0) Sequence abort error:

• 0: No error

• 1: Error

Figure 65. Byte 4 Return Parameters

MSB Byte 1 – Misc. Status LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:6)

Reserved

b(5) Watchdog timer timeout:

• 0: No timeout

• 1: Timeout b(4) Product configuration error:

• 0: No error

• 1: Error b(3) Master versus slave operation:

• 0: Master

• 1: Slave b(2) Single versus dual controller configuration:

• 0: Single

• 1: Dual b(1:0) Reserved

The system sets the product configuration error bit if it determines that some piece of the product configuration is not correct. Some examples are:

• Invalid controller or DMD combination

• Invalid controller or DLPA200x combination

• Invalid flash build for the current controller, DMD, or DLPA200x configuration The system sets the watchdog timer timeout bit if the system has been reset due to a watchdog timer

timeout.

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5.1.3.52 Read System Software Version (D2h)

5.1.3.52.1 Read

This command reads the main application software version information for the display module.

5.1.3.52.2 Read Parameters

This command has no read parameters.

5.1.3.52.3 Return Parameters

Table 48 describes the return parameters.

Table 48. Return Parameters

Parameter Bytes Description

Byte 1 Controller main application software version – patch LSByte Byte 2 Controller main application software version – patch MSByte Byte 3 Controller main application software version – Minor Byte 4 Controller main application software version – Major

5.1.3.53 Read Communication Status (D3h)

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5.1.3.53.1 Read

This command reads system status information for the display module.

5.1.3.53.2 Read Parameters

The read parameters are described in Table 49.

Table 49. Read Parameters

Parameter Bytes Description

Byte 1 Command bus status selection

Figure 66. Byte 1 Read Parameters

MSB Byte 1 – Command Bus Status Selection LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:2)

Reserved

b(1:0) Command bus status selection:

• 00: Reserved

• 01: Reserved

• 10: I2C only

• 11: Reserved

This command returns the communication status for the specified command bus. For I2C only: This selection returns status bytes 5 though 6.

5.1.3.53.3 Return Parameters

Table 50 describes the return parameters.

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Table 50. Return Parameters

Parameter Bytes Description

Byte 5 Communication status Byte 6 Aborted op-code

All communication status error bits are cleared when the Read Communication Status is read.

Figure 67. Byte 5 Return Parameters

MSB Byte 5 – Communication Status LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7)

Reserved

b(6) Bus timeout by display error:

• 0: No error

• 1: Error b(5) Invalid number of command parameters:

• 0: No error

• 1: Error b(4) Read command error:

• 0: No error

• 1: Error b(3) Flash batch file error:

• 0: No error

• 1: Error b(2) Command processing error:

• 0: No error

• 1: Error b(1) Invalid command parameter value:

• 0: No error

• 1: Error b(0) Invalid command error:

• 0: No error

• 1: Error

The system sets the invalid command error bit when it does not recognize the command op-code. The invalid command op-code is reported in the I2C CMD error op-code byte of this status.

The system sets the invalid command parameter error bit when it detects that the value of a command parameter is not valid (for example, out of the allowed range).

The system sets the command processing error bit when a fault is detected when processing a command. In this case, the command aborts and the system moves on to the next command. The op-code for the aborted command is reported in the I2C CMD error op-code byte of this status.

The system sets the flash batch file error bit when an error occurs during the processing of a flash batch file. When this bit is set, typically another bit is set to indicate what kind of error was detected (for example, an invalid command error).

The system sets the read command error bit when the host terminates the read operation before all of the requested data has been provided, or if the host continues to request read data after all of the requested data has been provided.

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The system sets the invalid number of command parameters error bit when too many or too few command parameters are received. In this case, the command aborts and the system moves on to the next command. The op-code for the aborted command is reported in the I2C CMD error op-code byte of this status.

The system sets the bus timeout by display error bit when the display releases control of the bus after the bus timeout value is exceeded.

Figure 68. Byte 6 Return Parameters

MSB Byte 6 – CMD Error Op-Code LSB

b7 b6 b5 b4 b3 b2 b1 b0

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b(7:0)

I2C CMD error op-code

The CMD error op-code is associated with various I2C communication status bits, and reports the op-code for an I2C command as noted.

5.1.3.54 Read Controller Device ID (D4h)

5.1.3.54.1 Read

This command reads the controller device ID for the display module.

5.1.3.54.2 Read Parameters

This command has no read parameters.

5.1.3.54.3 Return Parameters

Figure 69 describes the return parameters.

Figure 69. Return Parameters

MSB Byte 1 LSB

b7 b6 b5 b4 b3 b2 b1 b0

b(7:4)

Reserved

b(3:0) Controller device ID

The controller device ID can be decoded using Table 51.

Controller Device ID Device Number Application

00h DLPC3430 Embedded (SD) 01h DLPC3433 Embedded (SD) 02h DLPC3432 Embedded (SD) 04h DLPC3435 Standalone (SD) 05h DLPC3438 Standalone (SD)

Unused controller device ID values are reserved.

5.1.3.55 Read DMD Device ID (D5h)

5.1.3.55.1 Read

This command reads the DMD device ID for the display module.

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Table 51. Controller Device ID Decode

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5.1.3.55.2 Read Parameters

The read parameters are described in Figure 70.

Figure 70. Read Parameters

MSB Byte 1 – DMD Register Selection LSB

b7 b6 b5 b4 b3 b2 b1 b0

Software Interface

b(7:3)

Reserved

b(2:0) DMD data selection:

• 0h: DMD device ID

• 1h – 7h: Reserved

5.1.3.55.3 Return Parameters

Table 52 describes the return parameters.

Table 52. DMD Device ID Reference Table

DMD Device ID Device Description

Byte 1 (Identifier) Byte 2 (Byte Count) Byte 3 (ID-msbyte) Byte 4 (ID-lsbyte) Resolution and Type

60h 0Dh 00h 64h 60h 0Dh 00h 89h 0.23 qHD (960x540, Sub-

60h 0Dh 00h 68h

5.1.3.56 Read Flash Build Version (D9h)

5.1.3.56.1 Write

This command reads the controller flash version for the display module.

0.2 WVGA (854x480, SubLVDS)

LVDS)

0.3 720p (1280x720, SubLVDS)

5.1.3.56.2 Read Parameters

The command has no read parameters.

5.1.3.56.3 Return Parameters

Table 53 describes the return parameters.

Parameter Bytes Description

Byte 1 Flash build version – patch LSByte Byte 2 Flash build version – patch MSByte Byte 3 Flash build version – Minor Byte 4 Flash build version – Major

The OEM specifies a version number for the controller flash build in the format specified by this command. This command allows the OEM to read back this version information.

DLPU020C–July 2014–Revised May 2018

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Table 53. Return Parameters

DLPC3430, DLPC3432, DLPC3435, DLPC3433, and DLPC3438 Software

Programmer’s Guide

Revision History

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Revision History

Changes from B Revision (March 2018) to C Revision .................................................................................................. Page

• Added DLPC3432 as a supported device.............................................................................................. 7

• Removed the section 'Write System Reset' and its reference from Table 2, this command is no longer supported....... 10

• Removed references to WPC enable bit from Section 5.1.3.40 (Write CAIC Image Processing Control (84h)) and

Section 5.1.3.41 (Read CAIC Image Processing Control (85h)), command not supported.................................... 50

• Added controller device IDs for DLPC3433, DLPC3432, and DLPC3438 to Table 51......................................... 66

• Added device with 0.23 qHD (960x540, Sub-LVDS) to Table 52 ................................................................. 67

Revision History

DLPU020C–July 2014–Revised May 2018

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Revision History

Changes from A Revision (September 2014) to B Revision ................................................................................................ Page

• Changed range of CAIC clipping threshold from "0.0% to 2.0%" : to "0.0% to 4.0%".......................................... 50

DLPU020C–July 2014–Revised May 2018

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Revision History

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Changes from Original (July 2014) to A Revision ................................................................................................................ Page

• Added device types DLPC3433 and DLPC3438...................................................................................... 7

• Replaced DisplayCrafter with LightCrafter Display ................................................................................... 8

• Removed Port-1 information. ............................................................................................................ 8

• Removed Software Command Philosophy section ................................................................................... 9

• Removed Write Batch File Delay information from Table 2........................................................................ 11

• Removed Write Flash Batch File Delay (DBh) section ............................................................................. 67

Revision History

DLPU020C–July 2014–Revised May 2018

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Texas Instruments DLPC3430, DLPC3432, DLPC3433, DLPC3435, DLPC3438 Programmer's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

DLPC3430, DLPC3432, DLPC3433, DLPC3435 and DLPC3438 Software

Table of Contents

1 Trademarks

2 Introduction

2.1 Software Programmer’s Guide Overview

2.1.1 I2C-Based Command Data Interface

3 Interface Specification

3.1 I2C Interface and Ports for DLPC343x

4 System Initialization

4.1 Boot ROM Concept

4.2 Resident Boot Software

4.3 HOST_IRQ Initialization Sequence

5 Software Interface

5.1 I2C Considerations

5.1.1 I2C Transactions

5.1.1.1 Data Flow Control

5.1.2 List of System Write/Read Software Commands

5.1.3 System Write/Read Commands

5.1.3.1 Write Input Source Select (05h)

5.1.3.2 Read Input Source Select (06h)

5.1.3.3 Write External Video Source Format Select (07h)

5.1.3.4 Read External Video Source Format Select (08h)

5.1.3.5 Write Test Pattern Select (0Bh)

5.1.3.6 Read Test Pattern Select (0Ch)

5.1.3.7 Write Splash Screen Select (0Dh)

5.1.3.8 Read Splash Screen Select (0Eh)

5.1.3.9 Read Splash Screen Header (0Fh)

5.1.3.10 Write Image Crop (10h)

5.1.3.11 Read Image Crop (11h)

5.1.3.12 Write Display Size (12h)

5.1.3.13 Read Display Size (13h)

5.1.3.14 Write Display Image Orientation (14h)

5.1.3.15 Read Display Image Orientation (15h)

5.1.3.16 Write Display Image Curtain (16h)

5.1.3.17 Read Display Image Curtain (17h)

5.1.3.18 Write Image Freeze (1Ah)

5.1.3.19 Read Image Freeze (1Bh)

5.1.3.20 Write LOOK Select (22h)

5.1.3.21 Read LOOK Select (23h)

5.1.3.22 Read Sequence Header Attributes (26h)

5.1.3.23 Read DMD Sequencer Sync Mode (2Ch)

5.1.3.24 Write Execute Flash Batch File (2Dh)

5.1.3.25 Write External Input Image Size (2Eh)

5.1.3.26 Read External Input Image Size (2Fh)

5.1.3.27 Write Splash Screen Execute (35h)

5.1.3.28 Write LED Output Control Method (50h)

5.1.3.29 Read LED Output Control Method (51h)

5.1.3.30 Write RGB LED Enable (52h)

5.1.3.31 Read RGB LED Enable (53h)

5.1.3.32 Write RGB LED Current (54h)

5.1.3.33 Read RGB LED Current (55h)

5.1.3.34 Read CAIC LED Max Available Power (57h)

5.1.3.35 Write RGB LED Max Current (5Ch)

5.1.3.36 Read RGB LED Max Current (5Dh)

5.1.3.37 Read CAIC RGB LED Current (5Fh)

5.1.3.38 Write Local Area Brightness Boost Control (80h)

5.1.3.39 Read Local Area Brightness Boost Control (81h)

5.1.3.40 Write CAIC Image Processing Control (84h)

5.1.3.41 Read CAIC Image Processing Control (85h)

5.1.3.42 Write Color Coordinate Adjustment Control (86h)

5.1.3.43 Read Color Coordinate Adjustment Control (87h)

5.1.3.44 Write Keystone Correction Control (88h)

5.1.3.45 Read Keystone Correction Control (89h)

5.1.3.46 Write Border Color (B2h)

5.1.3.47 Read Border Color (B3h)

5.1.3.48 Write Keystone Projection Pitch Angle (BBh)

5.1.3.49 Read Keystone Projection Pitch Angle (BCh)

5.1.3.50 Read Short Status (D0h)

5.1.3.51 Read System Status (D1h)

5.1.3.52 Read System Software Version (D2h)

5.1.3.53 Read Communication Status (D3h)

5.1.3.54 Read Controller Device ID (D4h)

5.1.3.55 Read DMD Device ID (D5h)

5.1.3.56 Read Flash Build Version (D9h)

Revision History