Fostex FD-4 Service Manual page 57

MAIN, SCSI (5/9)
/ATA_RST
GA
DMARQ
IORDY_I
INTRQ
J12
W6
NON
1
2
3 W7 NON
4
W8
5 NON
6
7 /ATA_RST
8 DGND
9 DD7
10 DD8
11 DD6
12 DD9
13 DD5
14 DD10
15 DD4
16 DD11
17 DD3
18 DD12
19 DD2
20 DD13
21 DD1
22 DD14
23 DD0
24 DD15
25 DGND
26 KEYPIN
27 DMARQ
28 DGND
29 /DIOW
30 DGND
31 /DIOR
32 DGND
33 IORDY
34
35 DMACK
36 DGND
37 INTRQ
38 /IOCS16
39 ATA1
40 /PDIAG
41 ATA0
42 ATA2
43 /CS1FX
44 /CS3FX
45 /DASP
46 DGND
47
48 D+5
49
50 DGND
TO IDE HD DGND
/PDIAG
GA
/CS1FX
/CS3FX
DD[0..17]
GA
ATA[0..4]
ATA[0..4]
DMA_RDB
/DMA_RD
GA DMA_WRB
/DMA_WR
SCSI_CSB
/SCSI_CS
GA
SC_INT7I
SC_INT7I
SC_DREQB
/SCSI_DREQ
GA 28MHZ
28MHZ
CPU
SCSI_TMOUT
DD[0..17]
D+5
DGND
1
WR
2
RD
3
VCC
4
VSS
5
CLK
6
RESET
7
INT
8
MODE
S9 9
DBP
10
/DIOW VSS
GA S17 11
/DIOR DB7
S16 12
/DMACK DB6
S15 13
DB5
14
VCC
15
VSS
16
VSS
S14 17
DB4
S13 18
DB3
D+5 S12 19
DB2
S11 20
DB1
21
R28
VSS
S10 22
NON DB0
23
TEST1
24
TMOUT
25
(OPEN)
R27
0
W5
2
1
2P JUMPER
DD[0..17]
ATAD[0..4]
/DMACK
12 13
U6F R26
74HCU04
0
R20
NON
R21 100
ATA0 ATAD0
R22 100
ATA1 ATAD1 DGND
R23 100
ATA2 ATAD2
R24 100
ATA3 ATAD3
R25 100
ATA4 ATAD4
C41
C45
NON
NON
C43
NON
DGND
C42 C44
NON NON
D+5
R29
4.7K
ATAD4
75 ATAD3
A3
74 ATAD2
A2
73 ATAD1
A1
72 ATAD0
A0
71 /ATN S5
ATN
70
VSS
69 /BSY S7
BSY
68 /ACK S6
ACK
67 /RES S4
RES
66
VSS
65
VSS
U7
64
VCC
63 /MSG S1
MB86604L
MSG
62 /SEL S8
SEL
61 /C/D S2
C/D
60 /REQ S0
REQ
59
VSS
58 /I/O S3
I/O
57
TEST2
56
(OPEN)
55
TP
54
VSS
53
VCC
52
DREQ
51
DMACK
S[0..17] D+5
D+5 1
2
/DBP S9 3
R19 4.7K /DB0 S10 4
/DB1 S11 5
/DB2 S12 6
7
/DB3 S13 8
/DB4 S14 9
/DB5 S15 10
/DB6 S16 11
/DB7 S17 12
13
DGND
D+5
D1
1 2
CPU
DMA_SEL
EK13
C47
0.1
C48
10/16
DGND
D+5
POWER
DGND
J6
26
S0 /REQ 1
14
S1 /MSG 2
S2 /C/D 15
S3 /I/O 3
16
S4 /RES 4
S5 /ATN 17
S6 /ACK 5
18
S7 /BSY 6
S8 /SEL 19
7
S9 /DBP 20
S10 /DB0 8
S11 /DB1 21
9
S12 /DB2 22
S13 /DB3 10
S14 /DB4 23
S15 /DB5 11
24
S16 /DB6 12
/TPWR 25
S17 /DB7 13
27
DSUB-25P
DGND
S[0..17]
U8
25
N.C. TSD
24
EN VM
23 S8 /SEL
SCSI15 SCSI14
22 S7 /BSY
SCSI16 SCSI13
21 S6 /ACK
SCSI17 SCSI12
20 S5 /ATN
SCSI18 SCSI11
VSS
19 S4 /RES
SCSI1 SCSI10
18 S3 /I/O
SCSI2 SCSI9
17 S2 /C/D
SCSI3 SCSI8
16 S1 /MSG
SCSI4 SCSI7
15 S0 /REQ
SCSI5 SCSI6
14
VCC VCC
BH9595FP
D+5
C46 C39 C40 C38 C37
100/10 0.01 0.01 0.01 0.01
DGND GND
SCSI