Canon LBP-1000 Service Manual page 75

for Firm Ware (72pin, 1slot)
<J8>
ROM DIMM
ROM Cont.
MASK ROM (4MB)
A (23:4)
D (31:0)
IOA (5:2)
ALE
LVTH573x3
AD (31:0)
for Option (72pin, 2slot)
<J6/7>
ROM DIMM
ROM Cont. ROM Cont.
nRESET
66.666MHz
LVCHR162245x1
CPU
nGCS
LVCHR162245x1
IOD (15:0)
IOD (11:0)
Buffer
<J9>
IEEE 1284
Figure 2-6-2
<J4/5>
EDO RAM (4MB)
MA (10:0), nCAS (3:0), nWE
MA (11)
LVCHR162245x1
nRAS (7:0)
MD (31:0)
16.0000MHz
EEPROM
nA8_VDO
I/O Cont.
AIR
IOA (5:2)
IOD (13:0)
CENTRO B
Xilinx + FIFO
Buffer
<J3>
IEEE 1284 PANEL I/F
CHAPTER 2
Video Controller PCB Block Diagram
for Option (72pin, 2slot)
RAM DIMM
<J1>
nVDO
nBD
SCLK
SC
nRESET
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