Datasheet STV0676 Datasheet (SGS Thomson Microelectronics)

Page 1

STV0676

CMOS Digital Camera Co-processor

The STV0676 co-processor combined with ST CMOS image sensors offers highly integrated imaging products which deliver USB 1.1, RGBpreview, YCrCb or M-JPEG digital video data at up to 30 frames per second.

The STV0676 interfaces to CIF (352 x 288) or VGA (640 x 480) image sensor and performs:

- pixel defect correction,

- auto exposure, auto gain,

- auto white balance, anti-aliasing, anti-flicker,

- colour interpolation, colour balance,

- gamma correction,

- M-JPEG compression. STV0676 chipsets are supported by a fully- featured

USB driver. This provides a wide range of user definable settings for optimum camera setup and operation. Isochronous data transfer over USB guarantees video quality at all times, irrespective of the number of other peripherals.

Low power consumption, highly integrated designs and simple support circuitry enable OEMs to design low cost, low power, camera products for high volume consumer market places.

KEY FEATURES

■ Real-time video - up to 30fps VGA

■ USB 1.1 compliant

■ Motion-JPEG compression

■ Isochronous USB data transfer

■ Direct Show driver support

■ Programmable vendor ID

■ RGB-preview, YCrCb or M-JPEG video output

■ Automatic exposure, gain and wh ite balance

APPLICATIONS

USB camera:

- Biometric identification, toys and games

Embedded applications support:

- PDA, notebook PC, mobile phone

- Set top box, and security applications

STMicroelectronics offers camera manufacturers rapid-to-market camera products supported by comprehensive reference designs, software drivers and technical backup.

Typical application

lens + IR filter

October 2002 ADCS 7280926C 1/21

CMOS Sensor

CIF or VGA

image

array

Video

Processor

STV0676

Video

Compression

MIcro

Processor

USB

Interface

USB Cable

to host PC

EEPROM

Page 2

STV0676

Table of contents

Chapter 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.1 STV0676 co-processor general description .........................................................................5

1.2 Video processor (VP) ...........................................................................................................5

1.2.1 Sensor interface ...................................................................................................5

1.2.2 Video processor functions ....................................................................................6

1.3 Auto exposure and gain control ...........................................................................................7

1.4 Defect correction ..................................................................................................................7

1.5 Video compression (VC) engine ..........................................................................................7

1.6 Control processor .................................................................................................................7

1.7 Power management .............................................................................................................7

Chapter 2 External interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2.1 USB interface ................................................................ ........... ........... .................................8

2.2 Mode selection .....................................................................................................................9

2.3 Selecting VID and PID via the digiport .................................................................................9

2.4 Serial EEPROM .................................................................................................................10

2.4.1 EEPROM format and contents ...........................................................................11

2.4.2 Strings ................................................................................................................11

2.4.3 CheckSum .........................................................................................................12

2.5 I2C slave mode ..................................................................................................................12

2.6 Digiport ............................................................................................................................... 12

2.7 General purpose input and output ......................................................................................12

Chapter 3 STV0676 application example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3.1 USB webcam ...................................................................................... ........... ........... .........13

3.2 Embedded camera .............................................................................................................13

Chapter 4 Detailed specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

4.1 STV0676 absolute maximum ratings .................................................................................14

4.2 STV0676 AC/DC characteristic ..........................................................................................14

Chapter 5 Pinout and pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

5.1 STV0676 pin details ...........................................................................................................15

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STV0676

Chapter 6 Package Details STV0676 64pin TQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Chapter 7 Reference design and evaluation kits (RDK’s and EVK’s) . . . . . . . . . . . . . . . .20

Chapter 8 Ordering details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Chapter 9 Design issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

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Document revision history

Table 1 : Document revision history

Revision Date Comments

1.0 17/01/01 First Product preview release

1.1 22/01/01 Information added on

- Microport

- Serial EEPROM

- digiport

- Slave I

- I

1.2 01/02/01 Micropor t description up dated A 07/03/01 Details of existing STV0672 register map removed

Added reference to VV6411 sensor

B 10/10/01 Document reformatted with ST template

C implementation

C Register map

STV0676

C 13/08/02 Change from a chipset datasheet to co-processor only.

Update of driver reference and orderi ng details.

4/21 Revision C

Page 5

STV0676 Overview

1 Overview

1.1 STV0676 co-processor general description

The STV0676 is a digital video processor requiring no external RAM and a minimum of passive support components to provide a complete USB camera. STV0676 accepts raw digital video data from a ST VGA or CIF format CMOS sensor and is capab le of tr ansfer ring the resulting JPEG data to a host PC over USB at rates up to 30 frames per second VGA.

The internal STV0676 architecture consists of a number of separate functional blocks:

● Video processor (VP)

● Video compressor (VC)

● USB control block

● General purpose controller

The VP controls the sensor and processes the raw RGB pixel data into YCbCr images. This YCbCr data is compressed by the VC. The USB control block transfers the compressed data to the host PC.

1.2 Video processor (VP)

1.2.1 Sensor interface

The VP interfaces directly to the image sensor. The sensor interface comprises:

● 5-wire data bus SDATA[4:0] for receiving both video data and embedded timing references,

● 2-wire serial control interface (SSDA, SSCL),

● sensor clock SCLK

● reset circuitry

● sensor suspend control

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Overview STV0676

Figure 1: Block diagram of STV0676 video processor module

Video Compression (VC) EngineVideo Processor

SDATA[4:0] SSCL

Compressed Data

Control +

RAM

USB core /glue

logic and

command FIFO’s

Clocks

+ PLL

USB port

D+ D-

Digiport

CIF/VGA

Sensor

SSDA RESET_N SCLK

SUSPEND

General purpose housekeeper functions including AEC, AGC and

AWB

SDA

SCL

RESET

Stream

FIFOs

ROM

8052 Core

STV0676

GPIO/mode

select

Ext.

Interrupts

I2C Interface

12MHz

XTAL

1.2.2 Video processor functions

STV0676 provides a master clock SCLK to the camera module. Each 10-bit pixel value generated by the sensor is transmitted across the 5 wire databus SDATA[4:0] as a pair of sequential 5-bit nibbles, most significant nibble first . Codes representi ng the start and end fra mes and the start and end of lines are embedded withi n the video d ata stream to all ow the video processor to synchronise with the video data stream.

The video processing engine performs the following functions on incoming data:

● full colour restoration at each pixel site from Bayer-patterned input data,

● matrixing/gain on each colour channel for colour purity,

● peaking for image clarity,

● gamma correction,

● colour space conversion from raw RGB to YCbCr[4:2:2].

The 2-wire sensor serial interface (SSDA and SSCL) provides control of sensor configuration.

Note: the MSBit SDATA5 of the databus is unused in the current application but it will support future

sensors where a 12bit ADC architecture may be used.

6/21 Revision C

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STV0676 Overview

1.3 Auto exposure and gain control

The STV0676 automatically controls the sensor exposure, which is evaluated (and, where necessary modified) once per frame, where a frame consists of 2 video fields. The video fields are identical in length, that is, they do not contain any of the half line detail of the analogue video standards like CCIR or NTSC. T wo fields per frame are requir ed by the internal sensor video timi ng model. Integration time, sensor analogue gain and STV0676 digital gain are all used to control the overall exposure. The STV0676 exposure al gorithm uses an asymptotic ap proach in calculating th e change required in the present exposure value to approach the requested exposure target.

1.4 Defect correction

STV0676 automatically detects and corrects pixel defects without the need for any additional components or sensor calibration procedures. This greatly simplifies camera assembly and test when compared with previous EEPROM-based defect correction schemes. The pixel defect

correction scheme ensures that the STV0676 + ST CMOS sensor appears as a ‘defect free’ chipset.

1.5 Video compression (VC) engine

The video compression engine performs 3 main functions:

● up scaling of input YCbCr 4:2:2 video stream from the VP (typic ally to scale from QVGA to CIF

image formats),

● compression and encoding of YCbCr stream into Motion-JPEG (M-JPEG) format,

● USB bandwidth monitoring.

The data stream from the VP can be up to VGA size. The scaler in VC can downsize this image. Once scaled the video stream is then converted into M-JPEG format. M-JPEG simply treats video as a series of JPEG still images. The conversion is realised via a sequential DCT (discrete cosine transform) with Huffman encoding. After transfer over USB, the M-JPEG stream is decoded in the device driver running on the host.

The VC module is capable of compression ratios of up to 100:1 although this is scene-dependent. Image framerate produced by the STV0676 chipset is fixed and furthermore the available USB bandwidth is also fixed (within the software dri ver) . The VC m odul e varies the compr ession ratio to match the fluctuating input video data rates to the available USB bandwidth and re quired framerate.

The final stage of the VC block manages the data transfer from the local VC FIFO store to the USB core. STV0676 performs this ma nagem ent a utoma tical l y by e mpl oyin g long- ter m (fr ame-l evel ) and short-term (block-level) compression management.

1.6 Control processor

The embedded 8052 microprocessor core controls the data flow through the major sub blocks within STV0676 as well as the I from the device driver.

1.7 Power manageme nt

The chipset conforms to all power requirements specified by USB Version 1.1.

C communications to reconfigure the VP corresponding to requests

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External interfaces STV0676

2 External interfaces

2.1 USB interface

The USB interface is designed to be compliant with version 1.1 of the USB specification. The STV0676 is a low power device and is therefore suitable for connection to any USB port on a PC, self-powered hub or when connected to a bus-powered hub.

The device complies with the device framework specified in Chapter 9 of the USB specification as follows:

● The device supports a single high power configuration (

● Endpoint 0 is the default control endpoint and is always supported.

● Endpoint 0 supports all of the USB commands required by the device framework.

● Vendor specific commands on Endpoint 0 are used for all device control.

● Configuration 1 supports a single interface (interface 0).

● Interface 0 supports 8 alternate settings (alternates 0-7).

● The alternate settings support between 0 and 2 additional endpoints.

● Endpoint 1 is used for isochronous transfer of image data.

● Endpoint 3 is used for transferring status information, e.g. state of a hardware button.

● The endpoints are configured as follows (

Table 2

Configuration 1

) in the alternate settings:

Table 2: Endpoint alternate settings

Alternate setting Endpoint1 (isochronous) Endpoint3 (interrupt)

0 Not present Not present 1 Not present 8 bytes / packet; 1 packet /8 frames 2 128 bytes / packet; 1 packet/ frame 8 bytes / packet; 1 packet /8 frames 3 384 bytes / packet; 1 packet/ frame 8 bytes / packet; 1 packet /8 frames 4 640 bytes / packet; 1 packet/ frame 8 bytes / packet; 1 packet /8 frames 5 768 bytes / packet; 1 packet/ frame 8 bytes / packet; 1 packet /8 frames 6 896 bytes / packet; 1 packet/ frame 8 bytes / packet; 1 packet /8 frames 7 1023 bytes/ packet; 1 packet / frame 8 bytes / packet; 1 packet /8 frames

The best and most consistent performance in terms of image quality is always obtained in the highest bandwidth setting (alternate 7). Under some circumstances it may not be possible for the host to allocate this amount of USB bandwidth to the device.

The isochronous settings reserve varying quantities of bandwidth - from 10% to 85% of USB bandwidth. The lower settings result in poor image quality due to heavy compression applied to maintain a high framerate streaming of image data, but at the same time leaving more bandwidth free for other USB devices. This is desirable if more than one camera is to be used, or if there are other isochronous peripherals conne cted. The device dr iver allows the user to specify the maximum bandwidth they wish to allocate to transfer data from the device. If the maximum specified by the user is not available, perhaps because another isochronous device has already reserved that bandwidth, then lower alternates are tried until one succeeds.

8/21 Revision C

Page 9

STV0676 External interfaces

Benchmark testing of the STV0676 indicates that 30fps CIF video (compressed) can be accommodated in 50% of USB bandwidth.

2.2 Mode selection

All USB devices report a VID, PID and power consumption as part of a standard device descri pto r. The VID and PID for STV0676 can be configured by the state of the digiport bits or by using an external EEPROM. The mode selection is made using the two MODESEL pins as described in

Table 3

MODESEL[1] MODESEL[0] Mode of operation

below.

Table 3: Mode selection

0 0 USB Mode. External EEPROM fitted, therefore PID, VID and power

10 0 1 USB mode. Default. No external EEPROM fitted, the PID

11Reserved

consumption read from this source. See

C mode.

Slave I

VID and power consumption data determined by digiport[7:0]. See

Section 2.3

2.3 Selecting VID and PID via the digiport

Tables 4~7 demonstrate how the VID/PID information is defined via the digiport. The current reference design for t he STV0676-chipset has digipor t[7:0] conn ected to VSS, thus the

VID and PID are 16’h0553 and 16’h0140 respectively. The digiport also controls the device current consumption that is reported to the host at device

enumeration.

Table 4: Basic digiport configuration

digiport bit slice function

[3:0] configures the LS nibble of the PID [5:4] master VID/PID select

Section 2.4

[7:6] power setting

Table 5: Digiport LS nibble configuration

digiport[3:0] PID LS nibble

4’b0000 4’b0000 4’b0001 4’b0001 4’b0010 4’b0010

4’b0011 4’b0011 4’b0100 4’b0100 4’b0101 4’b0101

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External interfaces STV0676

Table 5: Digiport LS nibble configuration

digiport[3:0] PID LS nibble

4’b0110 4’b0110

4’b0111 4’b0111 4’b1000 4’b1000 4’b1001 4’b1001 4’b1010 4’b1010

4’b1011 4’b1011

4’b1100 4’b1100

4’b1101 4’b1101

4’b1110 4’b1110

4’b1111 4’b1111

Table 6: Master VID/PID selection

digiport[5:4] VID/PID reported

a. The ‘x’ ls nibble of the PID is defined by the value from

digiport[7:6] current consumption reported

2.4 Serial EEPROM

STV0676 is designed to be used with a 12 8 or 256 byte serial I2C EEPROM. The EEPROM can be programmed with data to allow a user to fully customise the USB identity of STV0676. The configuration of this data is as follows.

2’b00

2’b01 2’b10

2’b11

16’h0553/16’h014x 16’h0553/16’h015x

16’h0553/16’h026x

16’h0553/16’h017x

Table 5

Table 7: Device power consumption indicator

2’b00 98mA 2’b01 250mA 2’b10 350mA 2’b11 500mA

above

10/21 Revision C

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STV0676 External interfaces

2.4.1 EEPROM format and contents

Table 8: EEPROM format and contents

location contents

0 fixed number, must be 0x’ED 1 fixed number, must be 0x’15 2 reserved, must be 0x’00 3 max device power (=mA/2, e.g. 400mA enter 0x’C8) 4 VidLo, low byte of the vendor ID 5 VidHi, highbyte of the vendor ID 6 PidLo, low byte of the product ID 7 PidHi, highby te of the produc t ID 8 manufacturer st ri ng offset, exam pl e below

9 product string offset, see below 10 interface 0 String offs et 11 reserved, must be 0x’ 00

The remaining space is available for the string blocks indexed at locations 8, 9 and 10.

2.4.2 Strings

The strings referred to above (locations 8-10), are the USB string descriptors referenced from the

device, configuration and interface descriptors. The value should be set to ’0’ if the string is not implemented or to the offset in bytes of the start of the string block in the EEPROM.

The first byte of each string block is the number of the characters in the string. Subsequent bytes are the actual string, which need not include a terminating null (

12 reserved, must be 0x’00 13 checksum

Table 9: EEPROM device string example

Location Contents

8 Manufacturer string offset = 16 16 String length = 5 17 String text = ‘H’ (in ascii) 18 String text = ‘e’ (in ascii) 19 String text = ‘l’ (in ascii)

Table 9

:).

20 String text = ‘l’ (in ascii) 21 String text = ‘o’ (in ascii)

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External interfaces STV0676

2.4.3 CheckSum

The checksum is calculated by adding the byte value of EEPROM locations 0 to 12 inclusive, the low order byte of the result is stored in location 13.

2.5 I2C slave mode

STV0676 can be configured to behave as an I2C slave. This allows the device to be configured by host devices other than PCs. Details of the I register bank are available from STMicroelectronics.

2.6 Digiport

The Digiport is a 10-bit bi-directional data port which can be used to transfer video data in or out of the device. This port can also be used to configure USB descriptor information at power up see (

Section 2.3

STMicroelectronics.

). Full details on the digiport operation and control are available from

2.7 General purpose input and output

STV0676 provides up to 8 pins which can be used as general purpose I/O. These pins can be used

to interface to led’s, buzzers, switches etc.

C messages supported and description of the I2C

12/21 Revision C

Page 13

STV0676 STV0676 application example

3 STV0676 application example

3.1 USB webcam

Figure 2

shows a block diagram of a basic webcam using the minimum of external components.

The camera is controlled entirely through PC drivers over USB.

Note: If required a custom USB PID/VID can be configured by the use of an EEPROM, as detailed in

Section 2.3

Figure 2: Webcam block diagram

lens + IR filter

CMOS Sensor

CIF or VGA

image

array

Video

Processor

STV0676

Video

Compression

MIcro

Processor

USB

Interface

USB Cable

to host PC

EEPROM

3.2 Embedded camera

Figure 3

YCrCb or RGB preview over an 8bit bus, the third party electronics would control the STV0676 using I

shows a block diagram of a camera intended for embedded applicati ons, outputting JPEG,

lens + IR filter

Figure 3: Embedded camera block diagram

CMOS Sensor

CIF or VGA

image

array

Video

Processor

MIcro

Processor

I2C

STV0676

Video

Compression

FIFO

Digiport

Third party electronics

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Detailed specifications STV0676

4 Detailed specifications

4.1 STV0676 absolute maximum ratings

Description Range Unit

Operating Temperature 0 to 70 Storage Temperature -50 to 150

4.2 STV0676 AC/DC characteristic

Parameter Description Min Typ Max Units

VDD_CORE Primary STV0676 power sup p l y 1.55 1 .8 1.95 V VDD_IO 3.3V power supply for on-chip USB transceiver and IO 3.0 3.3 3.6 V VDD_PLL Analo g supply to the P LL 1.60 1.8 2 .0 V

I_core

I_core I_IO

I_PLL

HYS

T+

T-

I_IO

I_PLL

suspend

standby

active

suspend

standby

active

suspend

standby

active

Current consumption in suspend mode 3 µA

Current consumption in standby mode 9.6 mA Current consumption while active, VGA 30fps 52 mA Current consumption in suspend mode 40 µA Current consumption in standby mode 540 µA Current consumption while active, VGA 30fps 6.6 mA Current consumption in suspend mode 0.4 µA Current consumption in standby mode 476 µA Current consumption while active, VGA 30fps 476 µA CMOS input low voltage (XTAL_IN) 0.687 V

CMOS input high voltage (XTAL_IN) 1.19 V Hysteresis (XTAL_IN) 0.51 V CMOS input low voltage 0.35VDD V CMOS input high voltage 0.65VDD V CMOS schmitt input low to high threshold voltage 2.15 V CMOS schmitt input high to low threshold voltage 1.05 V Threshold poi nt 1.65 V Output high voltag e 2.4 V Output low voltage 0.4 V

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STV0676 Pinout and pin descriptions

5 Pinout and pin descriptions

5.1 STV0676 pin details

Figure 4: STV0676 pinout

MODESEL[0]

EEPROM_SCL

EEPROM_SDA

USB_DP

USB_DN

CORE_VSS

IO_VSS

CORE_VDD

IO_VDD

RESERV ED[4]

RESERV ED[3]

RESERV ED[2]

RESERVED[1]

MODESEL[1]

IO_VSS

RESERVED[0]

4964

TEST_CONF[2] TEST_CONF[1] TEST_CONF[0]

PLL_VDD

PLL_VSS

XTAL_IN

XTAL_OUT

CORE_VDD CORE_VSS

IO_VDD

IO_VSS DIGIPORT[9] DIGIPORT[8] DIGIPORT[7] DIGIPORT[6] DIGIPORT[5]

GPIO[7] GPIO[6]

GPIO[5] GPIO[4]

GPIO[3] GPIO[2]

GPIO[1] GPIO[0] IO_VSS

IO_VDD SW0_N SW1_N

SPDN SSCL

SSDA

RESET_N

IO_VSS

IO_VDD

CORE_VSS

DIGIPORT[4]

DIGIPORT[3]

DIGIPORT[2]

DIGIPORT[1]

DIGIPORT[0]

CORE_VDD

SENSOR_CLK

SENSOR_DB[5]

SENSOR_DB[4]

SENSOR_DB[3]

SENSOR_DB[2]

SENSOR_DB[1]

SENSOR_DB[0]

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Pinout and pin descriptions STV0676

Table 10: STV0676 pin description

Pin Signal Type Description

POWER SUPPLIES

4 PLL_VDD INPUT VDD for internal phas e locked loop 5 PLL_VSS INPUT GND for internal phase locked loop 8 CORE_VDD INPUT VDD for core logic 9 CORE_VSS INPUT Ground for core logic 10 IO _V DD INPUT VDD for pad ring 11 IO_VSS INPUT Ground for pad ring 22 IO _V DD INPUT VDD for pad ring 23 IO _V SS INPUT Ground for pad ring 24 CO RE _VDD INPUT VDD for core logic 25 CORE_VSS INPUT Ground for core logic 39 IO _V DD INPUT VDD for pad ring 40 IO _V SS INPUT Ground for pad ring 49 IO _V SS INPUT Ground for pad ring 57 IO _V DD INPUT VDD for pad ring 58 IO _V SS INPUT Ground for pad ring 59 CO RE _VDD INPUT VDD for core logic 60 CORE_VSS INPUT Ground for core logic

DEVICE MASTER CLOCK AND RESET

6 XTAL_IN ANA System clock pad 7 XTAL_OUT OSC System clock pad 33 RESET_N SCHMITT System, power-on-reset supplied by companion sensor

DIGIPORT/USB CONFIGURATION INTERFACE

12 DIGI PORT[9] BIDIR Digiport operation 13 DIGI PORT[8] BIDIR Digiport operation 14 DIGI PORT[7] BIDIR Digiport operation /programmable USB current consumption reported 15 DIGI PORT[6] BIDIR Digiport operation /programmable USB current consumption reported 16 DIGI PORT[5] BIDIR Digiport operation /programmable USB VID/PID 17 DIGI PORT[4] BIDIR Digiport operation /programmable USB VID/PID 18 DIGI PORT[3] BIDIR Digiport operation /programmable USB PID 19 DIGI PORT[2] BIDIR Digiport operation /programmable USB PID 20 DIGI PORT[1] BIDIR Digiport operation /programmable USB PID 21 DIGI PORT[0] BIDIR Digiport operation /programmable USB PID

SENSOR INT ERFACE

26 SENSOR_CLK BIDIR Sensor clock

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STV0676 Pinout and pin descriptions

Table 10: STV0676 pin description

Pin Signal Type Description

27 SENSOR_DB[5] INPUT Sensor data bus [bit5] 28 SENSOR_DB[4] INPUT Sensor data bus [bit4] 29 SENSOR_DB[3] INPUT Sensor data bus [bit3] 30 SENSOR_DB[2] INPUT Sensor data bus [bit2] 31 SENSOR_DB[1] INPUT Sensor data bus [bit1] 32 SENSOR_DB[0] INPUT Sensor data bus [bit0] 34 SS DA 3 state Sensor serial inte rface data 35 SS CL 3 state Sensor serial interf ace clock 36 SPDN BIDIR Control line to sensor to select ultra low power SUSPEND mode

MISC CONTROL

37 SW1 _N INPUT Spare switch input 38 SW0 _N INPUT Remote wakeup

GPIO INTERFACE/ OTHER

41 GPIO[0] BIDIR General purpose input/output (GPIO) 42 GPIO[1] BIDIR General purpose input/output (GPIO) 43 GPIO[2] BIDIR General purpose input/output (GPIO) 44 GPIO[3] BIDIR General purpose input/output (GPIO) 45 GPIO[4] BIDIR General purpose input/output (GPIO) 46 GPIO[5] BIDIR General purpose input/output (GPIO) 47 GPIO[6] BIDIR General purpose input/output (GPIO) 48 GPIO[7] BIDIR General purpose input/output (GPIO) 50 MODESEL[0] BIDIR

51 RESERVED[0] BIDIR Not connect in reference design 52 RESERVED[1] BIDIR Connect to VDD in reference design 53 MODESEL[1] BIDIR

54 RESERVED[2] BIDIR Connect to VDD in reference design 55 RESERVED[3] BIDIR Not connect in reference design 56 RESERVED[4] BIDIR Not connect in reference design

Along with ModeSel[1] used to configure I selection. Please see

Along with ModeSel[0] used to configure I selection. Please see

T able 3

for further details

T able 3

for further details

C interface and PID/VID

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Pinout and pin descriptions STV0676

Table 10: STV0676 pin description

Pin Signal Type Description

USB INTERFACE

61 USB_DN BIDIR USB data line 62 USB_DP BIDIR USB data line

TEST MODE SELECTION

1 TEST_CONF[0] INPUT Test conf i guration bit - connect to VDD for nor m al operation 2 TEST_CONF[1] INPUT Test conf i guration bit - connect to VDD for nor m al operation 3 TEST_CONF[2] INPUT Test conf i guration bit - connect to VDD for nor m al operation

EEPROM INTERFACE

63 EEPROM_SDA BIDIR 64 EEPROM_SCL BIDIR

a. The I2C pins EEPROM_SCL and EEPROM_SDA can be reconfigured to act as a low speed I2C

slave device that allows the user to directly control the internal register space of the VP and VC modules.

C clock

Serial data to/from the EEPROM or slave I Serial clock to t h e EEPROM or slave I

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STV0676 Package Details STV0676 64pin TQFP

6 Package Details STV0676 64pin TQFP

mm inch

Dim.

Min Typ Max Min Typ Max

A 1.60 0.063 A1 0.05 0.15 0.002 0.006 A2 1.35 1.40 1.45 0.053 0.055 0.057 B 0.18 0.23 0.28 0.007 0.009 0.011 C 0.12 0.16 0.20 0.0047 0.0063 0.0079 D 12.00 0.472 D1 10.00 0.394 D3 7.50 0.295 e 0.50 0.0197 E 12.00 0.472 E3 7.50 0.295 L 0.40 0.60 0.75 0.0157 0.0236 0.0295 L1 1.00 0.0393 K 0°C (min.), 7°C (max.)

OUTLINE AND

MECHANICAL DAT A

Weight: 0.30 gr

Body: 10x10x1.40mm

TQFP64

3348

E3D3E1

0.10mm

Seating Plane

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Reference design and evaluation kits (RDK’s and EVK’s) STV0676

7 Reference design and evaluation kits (RDK’s and EVK’ s)

STMicroelectronics supply a full range of sup porting re ference design kits for their range o f sensors and coprocessors.

Please refer to the STMicroelectronics website (Imaging Products under the quick links) for the upto-date list of available reference designs and evaluation kits.

8 Ordering details

For more information on the appropriate sensor choice please contact STMicroelectronics or refer to the STMicroelectronics website (Imaging Products under the quick links).

9 Design issues

There are no restrictions on the positioning of the STV0676 coprocessor with respect to the sensor . An EEPROM is required for full USB 1.1 compliance, see reference design manual for details.

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STV0676

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences

of use of such informa tion nor for any infringement of patents or other rights of thir d parties which may re s u lt from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

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Purchase of I

C Components by STMicroelectronics conveys a license under the Phillips I2C Patent. Rights to use these

components in an I

C system is granted provided that the system conforms to the I2C Standard Specification

as defined by Phillips.

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ADCS 7280926 Revision C 21/21