Read Sharp DM-1500 (serv.man2) Service Manual online
PIN
No.
Pin name
Signal name
IN/OUT
Destination
Function
43
PARAD5
PARAD5
IN
74LCX245, USS-725
Parallel I/F data bus
44
GND
GND
IN
GND
45
PARAD4
PARAD4
IN
74LCX245, USS-725
Parallel I/F data bus
46
PARAD3
PARAD3
IN
74LCX245, USS-725
Parallel I/F data bus
47
PARAD2
PARAD2
IN
74LCX245, USS-725
Parallel I/F data bus
48
V
DD
3.3V
IN
Power source
49
PARAD1
PARAD1
IN
74LCX245, USS-725
Parallel I/F data bus
50
PARAD0
PARAD0
IN
74LCX245, USS-725
Parallel I/F data bus
51
GND
GND
IN
GND
52
GND
GND
IN
GND
53
REV_1
REV_
OUT
74LCX245, I/F_CN
Data direction control
54
SCAN_EN
GND
IN
GND
55
SCAN_TEST
GND
IN
GND
56
PDACK_1
PARACK_
IN
ASIC(KZ4H167V06)
DMA acknowledge signal from
ChipsetASIC
ChipsetASIC
57
PDREQ_1
PARREQ_
OUT
ASIC(KZ4H167V06)
DMA request signal to ChipsetASIC
58
SCLK
GA2CLK
IN
PLL IC (CY2292)
Clock
59
DEVCS_1
1284CS_
IN
ASIC(KZ4H167V06)
OS_ signal to interface ASIC
60
DEVWR_1
PIAWE_
IN
ASIC(KZ4H167V06)
Write signal to interface ASIC
61
DEVRD_1
PIARD_
IN
ASIC(KZ4H167V06), 74LVC16245
Read signal to interface ASIC
62
RES_1
RESET_
IN
CPU
Reset signal
63
VCCOK
VCCOK
IN
ASIC(KZ4H167V06)
V
CC
states effective
64
CPUD0
LDT0
IN/OUT
74LVC16245
Data bus
65
CPUD1
LDT1
IN/OUT
74LVC16245
Data bus
66
CPUD2
LDT2
IN/OUT
74LVC16245
Data bus
67
CPUD3
LDT3
IN/OUT
74LVC16245
Data bus
68
CPUD4
LDT4
IN/OUT
74LVC16245
Data bus
69
GND
GND
IN
GND
70
CPUD5
LDT5
IN/OUT
74LVC16245
Data bus
71
CPUD6
LDT6
IN/OUT
74LVC16245
Data bus
72
V
DD
3.3V
IN
Power source
73
CPUD7
LDT7
IN/OUT
74LVC16245
Data bus
74
CPUD8
LDT8
IN/OUT
74LVC16245
Data bus
75
CPUD9
LDT9
IN/OUT
74LVC16245
Data bus
76
GND
GND
IN
GND
77
CPUD10
LDT10
IN/OUT
74LVC16245
Data bus
78
CPUD11
LDT11
IN/OUT
74LVC16245
Data bus
79
CPUD12
LDT12
IN/OUT
74LVC16245
Data bus
80
V
DD
3.3V
IN
Power source
DM-1505
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