Avago Technologies LSI53C876E - Manual (Page 49)

SCSI Functional Description 2-27
Figure 2.5 LSI53C876 Differential Wiring Diagram
SDIRP0
SDIR7
SDIR6
SDIR5
SDIR4
SDIR3
SDIR2
SDIR1
SDIR0
SDP/
SD7/
SD6/
SD5/
SD4/
SD3/
SD2/
SD1/
SD0/
SELDIR
BSYDIR
RSTDIR
SEL/
BSY/
RST/
REQ/
ACK/
MSG/
C/D/
I/O/
ATN/
TGS
IGS
1A
1DE/RE
2A
2DE/RE
3A
3DE/RE
4A
4DE/RE
5A
5DE/RE
6A
6DE/RE
7A
7DE/RE
8A
8DE/RE
9A
9DE/RE
CDE0
CDE1
CDE2
BSR
CRE
1B+
1B-
2B+
2B-
3B+
3B-
4B+
4B-
5B+
5B-
6B+
6B-
7B+
7B-
8B+
8B-
9B+
9B-
SN75976A #1
SD0/
SD1/
SD7/
SDP0/
SDIR0
SDIR1
1A
1DE/RE
2A
2DE/RE
3A
3DE/RE
4A
4DE/RE
5A
5DE/RE
6A
6DE/RE
7A
7DE/RE
8A
8DE/RE
9A
9DE/RE
CDE0
CDE1
CDE2
BSR
CRE
1B+
1B-
2B+
2B-
3B+
3B-
4B+
4B-
5B+
5B-
6B+
6B-
7B+
7B-
8B+
8B-
9B+
9B-
DIFFSENS
SELDIR
BSYDIR
RSTDIR
SEL/
BSY/
RST/
REQ/
ACK/
MSG/
C_D/
I_O/
ATN/
-SEL (42)
+SEL (41)
-BSY (34)
+BSY (33)
-RST (38)
+RST (37)
-REQ (46)
+REQ (45)
-ACK (36)
+ACK (35)
-MSG (40)
+MSG (39)
-C/D (44)
+C/D (43)
-I/O (48)
+I/O (47)
-ATN (30)
+ATN (29)
-DB0 (4)
+DB0 (3)
-DB1 (6)
+DB1 (5)
-DB2 (8)
+DB2 (7)
-DB3 (10)
+DB3 (9)
-DB4 (12)
+DB4 (11)
-DB5 (14)
+DB5 (13)
-DB6 (16)
+DB6 (15)
-DB7 (18)
+DB7 (17)
-DBP (20)
+DBP (19)
LSI538760
SCSI
BUS
VDD
1.5 K
1.5 K
Ω
DIFFSENS (pin 21)
Schottky
Diode
DIFFSENS
VDD
VDD
VDD
1.5 K
Ω
VDD
1.5 K
Ω
1.5 K
Ω
1.5 K
Ω
SN75976A #2
SD2/
SD3/
SDIR2
SD4/
SD5/
SD6/
SDIR3
SDIR4
SDIR5
SDIR6
SDIR7
SDIRP0