Avago Technologies LSI8751D - Manual (Page 46)

2-22 Functional Description
Figure 2.3 Differential Wiring Diagram
LSI53C8XX
SELDIR
BSYDIR
RSTDIR
SEL/
BSY/
RST/
REQ/
ACK/
MSG/
C/D/
I/O/
ATN/
TGS
IGS
SD[8:15]/
SDP1/
SDIRP0
SDIR7
SDIR6
SDIR5
SDIR4
SDIR3
SDIR2
SDIR1
SDIR0
SDP0/
SD7/
SD6/
SD5/
SD4/
SD3/
SD2/
SD1/
SD0/
DIFFSENS
1.5 K
1.5 K
Ω
VDD
VDD
1.5 K
Ω
1.5 K
Ω
VDD
1.5 K
Ω
VDD
VDD
1.5 K
Ω
SN75976A
CDE0
CDE1
CDE2
BSR
CRE
1A
1DE/RE
2A
2DE/RE
4A
4DE/RE
5A
5DE/RE
6A
6DE/RE
7A
7DE/RE
8A
8DE/RE
9A
9DE/RE
3A
3DE/RE
SEL/
SELDIR
BSYDIR
RSTDIR
REQ/
BSY/
RST/
ACK/
MSG/
C_D/
I_O/
ATN/
VDD
1.5 K
Ω
DIFFSENS
Schottky
Diode
DIFFSENS (pin 21)
−
SEL
SCSI
Bus
+SEL
−
BSY
+BSY
−
RST
(42)
+RST
−
REQ
+REQ
− ACK
+ACK
−
MSG
+MSG
−
C/D
+C/D
−
I/O
+I/O
−
ATN
+ATN
1B+
1B
−
2B+
2B
−
3B+
3B
−
4B+
4B −
5B+
5B
−
6B+
6B
−
7B+
7B
−
8B+
8B
−
9B+
9B
−
(41)
(34)
(33)
(38)
(37)
(46)
(45)
(36)
(35)
(40)
(39)
(44)
(43)
(48)
(47)
(30)
(29)
SN75976A
CDE0
CDE1
CDE2
BSR
CRE
1A
1DE/RE
2A
2DE/RE
4A
4DE/RE
5A
5DE/RE
6A
6DE/RE
7A
7DE/RE
8A
8DE/RE
9A
9DE/RE
3A
3DE/RE
−
DB0
+DB0
−
DB1
+DB1
−
DB2
(4)
+DB2
− DB3
+DB3
−
DB4
+DB4
−
DB5
+DB5
−
DB6
+DB6
−
DB7
+DB7
−
DBP
+DBP
1B+
1B −
2B+
2B
−
3B+
3B
−
4B+
4B
−
5B+
5B
−
6B+
6B
−
7B+
7B
−
8B+
8B
−
9B+
9B −
(3)
(6)
(5)
(8)
(7)
(10)
(9)
(12)
(11)
(14)
(13)
(16)
(15)
(18)
(17)
(20)
(19)
DIFFSENS
DIFFSENS
SDIR0
SDIR1
SDIR2
SDIR3
SDIR4
SDIR5
SDIR6
SDIR7
SDIRP0
SD0/
SD1/
SD2/
SD3/
SD4/
SD5/
SD6/
SD7/
SDP0/
1.5 K