Read Sharp AR-BD14 (serv.man5) Service Manual online
Pin
No.
Signal
name
I/O
Functions
24
RAS2-
IBF
DRAM row address select signal 2
from LZ95NA8
from LZ95NA8
25
IDREQ
IBF
Input data request signal from PM2
26
ED06
IBF
I/O data 6
27
ACK-
IBF
Acknowledge signal from LZ95NA8
28
GND
29
ED07
IBF
I/O data 7
30
CWOE-
IBF
Centronics write output enable signal
31
SELI3-
IBF
Interruption select signal 3
32
A1
OBF
Address 1
33
RMCSJ-
IBF
ROM chip select signal 2 JUMP
34
SELI5-
IBF
Interruption select signal 5
35
A0
OBF
Address 0
36
VCC
37
RMCS2-
IBF
ROM chip select signal
38
ED00
IBF
I/O data 0
39
AREA2-
OBF
Horizontal effective area signal
40
GND
41
VCC
42
SINT0-
OBF
Interruption signal to CPU
43
RAS1A-
OBF
DRAM module row address select
signal
signal
44
EDMREQ
OBF
DMA request to LZ95NA8
45
GND
46
RAS1B-
OBF
DRAM module row address select
signal
signal
47
ODACK-
OBF
Output data strobe to PM2
48
INT4-
OBF
Interruption signal to CPU
49
RAS0A-
OBF
DRAM row address select signal
50
INT5-
OBF
Interruption signal to CPU
51
IDACK-
OBF
Input data strobe to PM2
52
INT3-
OBF
Interruption signal to CPU
53
TCNT1
IBF
Test signal 1 for counter
54
CTWRE-
OBF
Centronics write register output
enable signal
enable signal
55
CTDIR-
OBF
Centronics data output enable signal
56
HSYNC-
IBF
Horizontal sync signal
57
10GP1-
IBF
I/O chip select signal 1 (16bit I/O)
from LZ95NA8
from LZ95NA8
58
HSYN2-
OBF
Horizontal sync signal 2
59
QCLK
OBF
Output clock 6.25MHz
60
CSEET-
OBF
D9001MF chip select signal
61
GND
62
CSPM2-
OBF
PM2 chip select signal
63
CS374-
OBF
79R3741 chip select signal
64
TEST0
OBF
Schmidt buffer test pin
65
CS85C-
OBF
85C30 chip select signal
66
PIORD-
OBF
8bit i/o read signal
67
FLAWE-
OBF
Flash memory write signal
68
VCC
69
ROMOE-
OBF
Flash memory output enable signal
70
WR85C-
OBF
85C30 write signal
71
PIOWR-
OBF
8bit I/O write signal
72
RES16-
OBF
I/O chip select signal (16bit I/O)
reserve 1
reserve 1
73
HCLK
OBF
Output clock 12.5MHz
74
EXT16-
OBF
I/O chip select signal (16bit I/O)
reserve 1
reserve 1
75
RD85C-
OBF
85C30 read signal
Pin
No.
Signal
name
I/O
Functions
76
GND
77
INT37-
IBF
Interruption signal from LZ95NA8
78
ED03
IBF
I/O data 3
79
INT12-
IBF
Interruption signal from 79R3741
80
ED02
IBF
I/O data 2
81
WR-
IBF
Write signal from CPU
82
INT85-
IBF
Interruption signal from 85C30
83
VSYN2-
OBF
Vertical sync signal 2
84
VCC
85
INTPM-
IBF
Interruption signal from PM2
86
SELI4-
IBF
Interruption select signal 4
87
ED01
IBF
I/O data 1
88
GND
89
VCC
90
GND
91
RESET-
IBF
Reset signal
92
BSYSCK
IBFSA
Input clock 25MHz
93
VCC
94
ODREQ
IBF
Output data request from PM2
95
N.C.
96
IOGP0-
IBF
I/O chip select signal 0 (16bit I/O)
from LZ95NA8
from LZ95NA8
97
GND
98
IORD-
IBF
I/O read signal from LZ95NA8
99
A21
IBF
Address 21
100
A23
IBF
Address 23
H. Image output section and smoothing section
Output control of print data formed in the print PWB is performed by
the engine output section assembled in the GT-32011. By inputting
the serial image data from this circuit to D9001MF, smoothing is
performed.
the engine output section assembled in the GT-32011. By inputting
the serial image data from this circuit to D9001MF, smoothing is
performed.
Engine I/F Block
GT-32011
373
System-Bus
16bit I/O bus (7:0)
ALE
/IOGPCS0
A23,22,21
/CS
/AREA2
/DTEN2
/HS2
VIDEO
/HSYNC2
VD
DCLK
ICU I/F
EET
D9001
MF
G/A
LZ95NA8
CPU
R3081
OSC
58.465
Mhz
– 35 –
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