Read Sharp AR-156 (serv.man3) Service Manual online
(2) ASIC (Signal table)
PIN No.
Signal name
IN/OUT
Connected to
Description
1
/SCANSP
IN
CPU (I/O)
Scanner process interrupt signal
2
/PRSTART
IN
CPU
Print start trigger signal
3
/TMEN
IN
CPU
Toner motor ON/OFF
4
TMCLK
IN
CPU
Toner motor reference clock
5
3.3V
Power
6
CPUAD7
IN
CPU
CPU address bus
7
CPUAD6
IN
CPU
CPU address bus
8
GND
Power
9
CPUAD5
IN
CPU
CPU address bus
10
CPUAD4
IN
CPU
CPU address bus
11
CPUAD3
IN
CPU
CPU address bus
12
CPUAD2
IN
CPU
CPU address bus
13
CPUAD1
IN
CPU
CPU address bus
14
/CPUSYNC
OUT
CPU
Horizontal synchronization signal
15
/ASICINT
OUT
CPU
Interruption request signal
16
/CS2
IN
CPU
CPU chip select signal
17
/RESET
IN
RESET IC
Reset signal
18
5V
Power
19
GND
Power
20
3.3V
Power
21
GND
Power
22
MDATA15
IN/OUT
DRAM
Data bus of DRAM (page memory)
23
MDATA14
IN/OUT
DRAM
Data bus of DRAM (page memory)
24
MDATA13
IN/OUT
DRAM
Data bus of DRAM (page memory)
25
MDATA12
IN/OUT
DRAM
Data bus of DRAM (page memory)
26
MDATA11
IN/OUT
DRAM
Data bus of DRAM (page memory)
27
MDATA10
IN/OUT
DRAM
Data bus of DRAM (page memory)
28
MDATA9
IN/OUT
DRAM
Data bus of DRAM (page memory)
29
MDATA8
IN/OUT
DRAM
Data bus of DRAM (page memory)
30
MDATA7
IN/OUT
DRAM
Data bus of DRAM (page memory)
31
3.3V
Power
32
MDATA6
IN/OUT
DRAM
Data bus of DRAM (page memory)
33
MDATA5
IN/OUT
DRAM
Data bus of DRAM (page memory)
34
GND
Power
35
MDATA4
IN/OUT
DRAM
Data bus of DRAM (page memory)
36
MDATA3
IN/OUT
DRAM
Data bus of DRAM (page memory)
37
MDATA2
IN/OUT
DRAM
Data bus of DRAM (page memory)
38
MDATA1
IN/OUT
DRAM
Data bus of DRAM (page memory)
39
MDATA0
IN/OUT
DRAM
Data bus of DRAM (page memory)
40
/RAS0
OUT
DRAM
RAS signal 0 of DRAM (page memory)
41
/RAS1
OUT
DRAM
RAS signal 1 of DRAM (page memory)
42
/RAS2
OUT
DRAM
RAS signal 2 of DRAM (page memory)
43
/RAS64
OUT
DRAM control (for
panther)
panther)
(Reserved)
44
3.3V
Power
45
/RAS16
OUT
DRAM control (for
panther)
panther)
(Reserved)
46
MAD0
OUT
DRAM
Address bus of DRAM (page memory)
AR-F152
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