Kurzweil K2600 Series Service Manual
7-6
CPU Board–SCSI Interface (4 of 8)
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
A
B
C
D
A
B
C
D
R162
2A
12
D6
S1A(1N4001)
12
U15
UC5608QP
20
1
3
10
4
11
5
12
6
13
7
14
8
15
9
16
10
17
11
18
21
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
19
DISCONN
12
GND1
13
GND2
14
GND3
15
GND4
16
GND5
17
GND6
18
GND7
2
REG
1
TRMPWR
DGND
VCC
U14
53C80
23
3 12 31 36 42
14
A[0]
15
A[1]
16
A[2]
9
DRQ
28
D[0]
27
D[1]
26
D[2]
25
D[3]
24
D[4]
22
D[5]
21
D[6]
20
D[7]
8
IRQ
13
READY
17
CS
11
DACK
10
EOP
19
RD
7
RESET
35
SDBP
18
WR
33
ACK
6
ATN
4
BSY
30
C/D
32
I/O
29
MSG
34
REQ
2
RST
37
SBD[0]
38
SBD[1]
39
SBD[2]
40
SBD[3]
41
SBD[4]
43
SBD[5]
44
SBD[6]
1
SBD[7]
5
SEL
J816
EXTERNAL SCSI
26
MT1
27
MT2
25
TPWR
5
ACK
17
ATN
6
BSY
15
C/D
20
DBP
8
DB[0]
21
DB[1]
22
DB[2]
10
DB[3]
23
DB[4]
11
DB[5]
12
DB[6]
13
DB[7]
24
GND[26]
18
GND[27]
16
GND[28]
14
GND[29]
9
GND[30]
7
GND[31]
3
I/O
2
MSG
1
REQ
4
RST
19
SEL
J817
EXTERNAL SCSI
26
MT1
27
MT2
25
TPWR
5
ACK
17
ATN
6
BSY
15
C/D
20
DBP
8
DB[0]
21
DB[1]
22
DB[2]
10
DB[3]
23
DB[4]
11
DB[5]
12
DB[6]
13
DB[7]
24
GND[26]
18
GND[27]
16
GND[28]
14
GND[29]
9
GND[30]
7
GND[31]
3
I/O
2
MSG
1
REQ
4
RST
19
SEL
J818
INTERNAL SCSI
26
TPWR
38
ACK
32
ATN
36
BSY
46
C/D
18
DBP
2
DB[0]
4
DB[1]
6
DB[2]
8
DB[3]
10
DB[4]
12
DB[5]
14
DB[6]
16
DB[7]
20
GND[26]
22
GND[27]
24
GND[28]
28
GND[29]
30
GND[30]
34
GND[31]
50
I/O
42
MSG
48
REQ
40
RST
44
SEL
19
GND[10]
21
GND[11]
23
GND[12]
25
GND[13]
27
GND[14]
29
GND[15]
31
GND[16]
33
GND[17]
35
GND[18]
37
GND[19]
1
GND[1]
39
GND[20]
41
GND[21]
43
GND[22]
45
GND[23]
47
GND[24]
49
GND[25]
3
GND[2]
5
GND[3]
7
GND[4]
9
GND[5]
11
GND[6]
13
GND[7]
15
GND[8]
17
GND[9]
S2
1
2
3
+
C54
4.7uF,6.3V,TANT
12
+
C55
4.7uF,6.3V,TANT
12
+
C53
4.7uF,35V,ELEC
12
L6
1
2
U13
74HC04
12
U13
74HC04
56
U13
74HC04
34
R82
220
12
R83
330
12
R87
DNS
12
R97
10K
12
R84
10K
12
R81
10K
12
C52
1000pF,X7R
12
C59
.1uF
12
C58
.1uF
12
C57
.1uF
12
C56
.1uF
12
R88
100
12
YOUNG CHANG CO., LTD.
of Young Chang Co., Ltd. is prohibited.
Reproduction without the express written consent
Filename:
Doc:
Mfg:
Eng:
Sht
By:
Date:
of
Rev:
K2600 CPU BOARD
SCSI Interface
Mike Richmond
021206-001 RDV2
021206D2 1/5/00
48
VCC VCC VCC VCC
VCC VCC
SCSIDRQ
SCSIDRQ {1-A1,D2}
SCSIIRQ
SCSIIRQ {1-C8}
BD[15:08]
BD[15] SD7
SD7
BD[14] SD6 SD6
BD[13] SD5 SD5
BD[12] SD4 SD4
BD[11] SD3 SD3
BD[10] SD2 SD2
BD[09] SD1 SD1
BD[08] SD0 SD0
BA[21:00] {2-A1,3-A1,5-D1,8-C8} SDBP SDBP
BA[02]
BA[01] SRST
SRST
BA[00] SBSY SBSY
SSEL SSEL
SCSICS {8-B8}
SACK SACK
CPUOE {1-D8,2-D1,3-B1,6-C1}
SATN SATN
CPUWE_HI {1-D8,2-D1,3-B1}
SREQ SREQ
SI/O SI/O
SC/D SC/D
SMSG SMSG
SCSIDACK {1-D2}
SCSIEOP {1-A8}
RESET {2-B1,3-D1,5-A1,8-D8}
VCC
VCC
SCSI_DISCON {6-A8}
VCC
VCC
VCC
SCSISNS2 {6-B1}
SCSISNS1 {6-B1}
SCSISNS0 {6-B1}
VCC
SCSIVCC
TERMPWR
AUTO
OFF
SCSI
THRU
SCSI
INT.
SCSI
All resistors are 5% unless specified otherwise.
All capacitors are X7R unless specified otherwise.
Date:
Sht. 4 of 8
Eng:
Doc:
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