Xerox WorkCentre Pro 412 Service Manual page 46

Circuit Description
Intelligent scan motor controller
(1) Automatic acceleration/deceleration/uniform velocity.
(2) Data memory: 256x16bits = 4Kbits (internal).
Auto-Run
Automatic CLK_LINE (line processing start control) and •'TG (line scan start control) signal generation.
(1)Available re-synchronisation of øTG signal.
(2) programmable øTG's period & CLK_LINE's occurrence number.
Processed data output format in DTM (Data Transfer Module)
(1)DMA mode: Burst/On-demand mode.
(2) CDIP I/F: LINE_SYNC, PIXEL_SYSNC, PIXEL_DATA[7:0].
36 General Purpose Input/Output: 8(GPO), 28(GPIO)
Black/White reversion, and Image Mirroring support
DATA MEMORY
CPU
(Jupiter)
ADD R- BUS
DAT A- BUS
5-20
ADD R BU S
DATA BUS
Scan/Motor
Driver
ADDR- BUS
DAT A- BUS
n Tx_A, nTx_B
CIP3
External interface with CIP3
August 2001
DMA Controller
(Jupiter)
T T
CLK_LINE R R
D D
CLK_PIX
M M
L IN E_PERIO D A A
IW IN A R
Processor
C E
K Q
ADC _CLK
CD S2 _CLK
AFE Co ntro l
Sig na l
PI_TG
PI1 , PI2
Tx_A, Tx_B,
D OCU MENT IMAGE
1M bit
SRAM
Image
AFE
12b it ADC
12 b it (R/ G/ B)
Ana lo g Si gn al
Scanner
WorkCentre Pro 412
Launch Issue