Xerox WorkCentre 385, Service Manual

Page: 170 / 184

WorkCentre 385
12/98
7 - 36
Circuit Description
SCAN_IP Block Diagram
SCAN_IP internal consists of A/D converter,
scanner controller, and image processor. A/D
converter changes image signal to digital signal.
Scanner controller supplies interface signal
between host controller, and CIS driver signal.
Image processor performs shading correction of
image signal, gamma correction, and logic.
FIG. 7-11: SCAN_IP BLOCK DIAGRAM
SCAN_IP
Image
Processor
Data
Memory Host
Controller
Scanner
Controller A/D
Converter
CIS
Analog
Data
Digitized
Data
A/D
Sample
Clock
System
Data BUS
IP Control Data
Formatted Data for DMA
IP Control Data
Formatted Data
for DMA
DMA
Control
Pixel
Data
IP
Control
Processed
Data
Data
Timing
CIS Control
(RLED, GLED, BLED, CIS,_CLK, CIS_SH)
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