Canon XRD9829REF User Manual

XRD9829REF

USER MANU AL

July 1998-2

CIS 30-BIT COLOR SINGLE LINE SCANNER

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • [phone] • FAX [phone]

XRD9829REF

EVALUATION KIT PART LIST

This kit contains the following:

• XRD9829REF CIS 30-Bit Color Single Line Scanner

• XRD9829REF User Manual

• ScanIt 1.0 Software Installation Diskettes (2)

• XRD9829 Data Sheet

• Scan Targets (Black, White, Color)

FEATURES

• One line scanning functionality of XRD9829 with CANON 300 DPI CIS

• Easy use with most personal computers through Parallel Port Interface

• Simple way of loading the Serial Port of XRD9829 to adjust gain and offset

• Software ScanIt to view single line scan

• Optimized Layout with Four Layers

SYSTEM REQUIREMENTS

• Intel 486 compatible computer with Windows 95 operating system

• 8 MBytes system memory

• 25-pin D-shape parallel port receptacles

• 3 1/2” floppy disk drive

INTRODUCTION

The XRD9829REF is a demo system which includes a PCB design with a CANON CWB­30216G 300 DPI Color Contact Image Sensor (CIS). It demonstrates how to interface a CIS
with EXAR’s XRD9829, a 10-bit Linear CIS/CCD Sensor Signal Processor to get a single line
scan. The XRD9829REF is designed to provide a signal path for the CIS output signals to be
processed, digitized by the XRD9829 and transmitted to a personal computer. There are no
software algorithms or hardware implementations to adjust for true color response.

The XRD9829REF board is loaded with the XRD9829, a Vantis MACH435, two FIFO SRAMs
and peripheral circuits for the CIS. The MACH435, which is a CMOS Programmable Logic
Device (CPLD) provides timing signals to the XRD9829, the SRAMs and the CIS. It also
programs the XRD9829 to operate in the correct mode and adjust for gain and offset values.
The XRD9829 processes the analog output from the CIS sensor, level-shifts and converts the
signal into digital codes. The SRAMs gate the digitized data from the XRD9829 and stores the
data temporarily. Controlled by the software, the SRAMs send the data through a parallel port
connection to the PC and histograms of raw data are displayed in the monitor using the ScanIt
software. A block diagram of the XRD9829REF is shown below in Figure 1.

Rev. 1.00

2

XRD9829REF

DATA

PARALLEL

PORT DB25

CONNECTOR

DATA

PARALLEL PORT CONTROL

DATA

INTEL 486 Compatible

CANON CWB-30216G 300DPI COLOR CIS

CIS OUTPUT

XRD9829

1.25V

DC

CIS CONTROL SIGNALS

FLIP­FLOP

5-BIT BUS NIBBLE

FLIP­FLOP

XRD9829 CONTROL SIGNALS

DATA

DATA

MACH435 CPLD

FIFO

SRAM

FIFO

SRAM

Figure 1. Block Diagram of XRD9829REF

The XRD9829 is a complete linear CIS or CCD sensor signal processor on a single monolithic
chip. The XRD9829 includes a high speed 10-Bit ADC, a 6-Bit Programmable Gain Amplifier
with gain adjustment of 1 to 10 and an 8-Bit programmable input referred offset calibration range
of 800 mV. See the XRD9829EVAL User Manual / PCB board for evaluating the XRD9829
CIS / CCD signal processor chip.

Rev. 1.00

3

XRD9829REF

CLP

VIN0

VIN1

VIN2

VIN3

VREF+

DB4:0 / DB9:5

DVDD

PDB

LD

DGND

AVDD

AGND

ADCCLK

PGA

CONTROL LOGIC

AVDD

6-BIT GAIN

REGISTER

10-BIT

ADC

RL

AGND

DATA

OUT

PORT

BUFFER

VRT

VRB

4-1

MUX

8-BIT DAC

10

5

8-BIT OFFSET

REGISTER

6

8

+

_

AGND

V

DCEXT

SCLK
SDATA

V

DCREF

DC/AC

MUX SEL

INT/EXT_V

DCREF

CIS/CCD

G<5:0>

O<7:0>

VRT

CCD

CIS

Power

Down

Power

Down

Rev. 1.00

Figure 2. Functional Block Diagram of XRD9829

4

OPERATIONAL PROCEDURE

The routine listed below will first calibrate the photo response of the CIS using the XRD9829.
After calibration, the XRD9829REF can be used to scan any color target to show CIS non-color
corrected response. (Color correction is typically done in the digital asic.)

How to Run the XRD9829REF Demonstration:

1. Make sure the computer is powered off and the AC power adapter is disconnected from a

2. Connect the parallel port cable to the printer port of the computer

3. Connect the AC power adapter into a wall outlet

4. Turn on the computer and activate Windows 95

wall outlet

Loading EXAR Software

5. Load the diskette labeled ScanIt 1.0 Disk # 1 into the floppy drive

6. Select the Start menu in the program manager and choose RUN

7. Inside the small pop-up window, type: A:\setup

8. Follow the instructions to finish software installation

XRD9829REF

Parallel Port Configurations

9. Confirm the parallel port address as follows:
a. Select the Start Menu, choose Settings, then choose Control Panel

b. From the Control Panel window which pops up, double-click on System
c. In the System Properties window, select Device Manager
d. From the Device Manager window, double-click on Ports (COM & LPT)
e. Double-click on Printer Port (LPT1). If you can not find it, please goto Step 10
f. From the pop-up window, select Resources
g. Verify the Input/Output Range is set to 0378 - 037F
h. If the range is not correct, clear the Use Automatic Settings check box by

clicking it
i. Choose correct address which is 0378 by default and click OK
j. Re-start the computer as advised

10. If you do not have a Printer Port configured on your computer, please follow the steps
listed below:

a. From the Control Panel window which pops up, double-click on Add New Hardware
b. From the pop-up window, click the Next > button
c. Select ‘No’ when prompted for ‘Do you want Windows to search for your new

hardware?’, then click the Next > button
d. Choose Ports (COM & LPT), then click the Next > button
e. Choose Printer Port, then click the Next > button
f. Make a note of the Input/Output Range of Printer Port of your computer and click

OK.
g. You will use these values later when configure the ScanIt software
h. Re-start the computer as advised

Offset Adjustment With a Black Target

11. Set the dip switches located on the side panel of the scanner to 1100010000 as shown
in Figure 2 and push the Serial Port button which is located on the front panel of the
demo system. This will reset the XRD9829.

Rev. 1.00

5

XRD9829REF

S1S

0

D7D

6

D5D

4

D3D

2

D1D

0

1

0

Figure 3. Dip Switches Set to Value 1100010000 to Reset the XRD9829

Rev. 1.00

6

XRD9829REF

Control Registers

Function D7 D6 D5 D4 D3 D2 D1 D0 Power-up
(Register State

S1/S0) (Note 1)

Gain

(00) G5 G4 G3 G 2 G1 G 0 X X 000000XX

(MSB) (LSB)

Offset O7 O6 O5 O 4 O3 O2 O1 O0 01000000

(01) (MSB) (LSB)

Mode XX V

(10) 0: INTERNAL REFERENCE 0: DC 0: CIS

Mode

& Test

(11) X X X DIGITAL RESET TEST3 TEST2 TEST1 X XXX0000X

RT

1: EXTERNAL (V

0:INTERNAL 0 0: VIN0 0 0: VIN0

= 0 1: VIN1 0 1: VIN1

(V

DCREF

AGND) 1 0: VIN2 1 0: VIN2
1: EXTERNAL 1 1: VIN3 1 1: VIN3
(V

DCREF=VDCEXT

INPUT DC DC/AC CIS/CCD MUX SEL MUX SEL XX000000

) 1: AC 1: CCD

DCREF

)

0: NO RESET 0: TEST3 0: TEST2 0: TEST1

1: RESET DISABLED DISABLED DISABLED

(REGISTERS ARE 1: OUTPUT 1: OUTPUT 1: VIN1 PIN

RESET TO OF BUFFER OF PGA TIED TO

POWER-UP TIED TO VIN3 TIED TO INPUT OF

STATES) PIN (VIN3 PIN VIN2 PIN AD C

BECOMES (VIN2 PIN (PGA OUTPUT

AN OUTPUT) BECOMES DISCONNECTED

AN OUTPUT) FROM INPUT

OF ADC)

Table 1. Control Register Description for XRD9829

Note:

1

These are the control register settings upon initial power–up. The previous register settings are retained following a

logic power-down initiated by the PDB signal.

Rev. 1.00

7

XRD9829REF

12. Select the Start Menu, choose Programs, then choose XRD9829REF icon

13. A window will pop up as shown below. The upper window shows the Plot of Captured
Data and the lower window shows the Histogram of data. Figure 3 shows the pop­up window when ScanIt is first

started.

Figure 4. ScanIt Software Window Before Scanning

14. Select SETUP from the pull-down menu and choose I/O ADDRESS. In the window
thatpops up, type in the Input/Output Range of Printer Port of your computer. The
default setting is 378H.

Rev. 1.00

8