PI310MC-DR Datasheet, PDF (4/10 Pages) AMI SEMICONDUCTOR – 300DPI CIS Two Level Digital Output Module

Peripheral imaging Corporation
Figure 1, PI310MC-DR block diagram depicts the two basic circuits, the CIS (image
sensors and video amplifier) and the tracking digitizer. In the CIS section, the module has
11 serially concatenated PI3012A image sensors. Accordingly, the image sensors will
span one scanning-read line width that is 11 sensor times 96 pixel elements/sensor, or
1056 pixel elements.
In operation, the CIS module produces the analog image pixel signals (video) that are
proportional to the exposure on the corresponding document picture element. The video is
then inputted to the tracking digitizer. In turn, the digitizer converts the analog image
pixels to digital image pixels. The analog image pixels, at test point TV, are separated into
two signals. One generates the reference signal and the other remains unmodified. The
unmodified signal (image pixels) are applied to one input of the comparator. The reference
signal is applied to the second input of the comparator. The results of the comparison are
the digital image pixels. This digital output is produced in two levels, determined by the
difference between the background reference signal and the analog image pixels. A digital
pixel output of value “one” represents the analog image pixel that is brighter than the
background and digital pixel level of value “zero” represents the image pixel that is darker
than background.
Specifications
I/O Connector
The table of pins and their functions are listed in Table I, Pin Configuration.
Pin Number
1
2
3
4
5
6
7
8
Symbol
DIGOUT
Vdd (+5 V)
Vn (-10 to -5V)
SP
GRD
CLOCK
GLED
VLED
Names and Functions
Digital Video Output
Ground; 0 V
Negative power supply
Start Pulse for the shift register
Ground; 0 V
Clock for the shift register
Return for the LED light source
Power in for the LED light
source.
Table 1. Pin configuration
The connector is a 8-pin 1-mm surface mount flex input, Molex 52207-0890.
Inputs:
There are five inputs:
• Clock is on Pin 6 of the I/O Connector. This is main clock input into the CIS Module.
• SP is on Pin 4. This is the start clock input to the CIS Module.
• VDD is on Pin 2. This is a + 5 Volts supply.
PAGE 4 of 10 PI310MC-DR Description, 7/30/99