Sharp AL-1000 Service Manual page 78

AL-1000/1010
2. ASIC input/output
PIN No. Signal name
1 /SCANSP
2 /PRSTART
3 TMON
4 TMCLK
5 3.3v
6 CPUAD7
7 CPUAD6
8 GND
9 CPUAD5
10 CPUAD4
11 CPUAD3
12 CPUAD2
13 CPUAD1
14 /CPUSYNC
15 /INTR
16 /CPUCS
17 /RESET
18 5V
19 GND
20 3.3v
21 GND
22 MDATA15
23 MDATA14
24 MDATA13
25 MDATA12
26 MDATA11
27 MDATA10
28 MDATA9
29 MDATA8
30 MDATA7
31 3.3v
32 MDATA6
33 MDATA5
34 GND
35 MDATA4
36 MDATA3
37 MDATA2
38 MDATA1
39 MDATA0
40 /RAS0
41 /RAS1
42 /RAS2
43 /RAS64
44 3.3V
45 /RAS16
46 MAD0
47 GND
48 MAD1
IN/OUT Connected to
IN CPU (I/O)
IN CPU
IN CPU
IN CPU
Power
IN CPU
IN CPU
Power
IN CPU
IN CPU
IN CPU
IN CPU
IN CPU
OUT CPU
OUT CPU
IN CPU
IN RESET IC
Power
Power
Power
Power
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
Power
IN/OUT DRAM
IN/OUT DRAM
Power
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
IN/OUT DRAM
OUT DRAM
OUT DRAM
OUT DRAM
OUT DRAM
Power
OUT DRAM
OUT DRAM
Power
OUT DRAM
Scanner process interrupt signal
Print start trigger signal
Toner motor ON/OFF
Toner motor reference clock
CPU address bus
CPU address bus
CPU address bus
CPU address bus
CPU address bus
CPU address bus
CPU address bus
Horizontal synchronization signal
Interruption request signal
CPU chip select signal
Reset signal
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
Data bus of DRAM (page memory)
RAS signal 0 of DRAM (page memory)
RAS signal 1 of DRAM (page memory)
RAS signal 2 of DRAM (page memory)
(Not used)
(Not used)
Address bus of DRAM (page memory)
Address bus of DRAM (page memory)
12-7
Description