LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 46

• Manufacturer Part Number: LSI53C875
• Description: PCI to Ultra SCSI I/O Processor
• Manufacturer: LSI Logic

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