Samsung SCX-5312F - Page 137

3-20
CIRCUIT DESCRIPTION
Samsung Electronics
Repair Manual
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 resynchronization 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
CPU
(Jupiter)
DMA Controller
(Jupiter)
DAT A- BUS
Scanner
D OCU MENT IMAGE
Analog Signal
T
R
D
M
A
_
R
E
Q
Image
Processor
T
R
D
M
A
_
A
C
K
Scan/Motor
Driver
PI_TG
ADC _CLK
LINE_PERIOD
CLK_PIX
CLK_LINE
Tx_A, Tx_B,
nTx_A, nTx_B
DATA MEMORY
1M bit
SRAM
ADDR BUS
DATA BUS
AFE
CD S2 _CLK
AFE Control
Signal
PI1, PI2
12b it ADC
12bit (R/ G/B)
IW IN
CIP3
DATA- BUS
ADD R- BUS ADDR- BUS
<External interface with CIP3>