Oki OKIFAX 5950 Series Maintenance Manual page 435

R76-
(3) Image LSI Specifications
The analog image data from the image sensor is amplified about 4.3 times in the external
non-reverse amplifier circuit and the amplified analog data is input to this LSI chip. In this
LSI chip, the analog data is converted to digital data by the built-in A/D converter and the
digital data is corrected by the internal correction function, thus sending binary-coded
data to the IOGA5 every eighth pixel normally. When contrast is corrected, multi-valued
data is sent for each pixel. When horizontal scanning lines are skipped, a request is
suppressed every three requests. A sensor drive signal (CLK1) and motor synchronizing
signal (SH) are output to the image sensor.
The timing of data transfer to/from the IOGA5 is shown below.
1 2 3 4 5 6 7 8 9 11 12 13 14 15 16
CLK1
SDREQ
SDACKn
DATA
8 bit
OF5750/5950 Series January 2001 A3 - 7