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Lsi53c120 differential wiring diagram, A-2 differential wiring diagram – Avago Technologies LSI53C120 User Manual

Page 52

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A-2

Differential Wiring Diagram

Figure A.1

LSI53C120 Differential Wiring Diagram

LSI53C120

SEL+

BSY+

RST+

SEL

BSY

RST

REQ

ACK

MSG

C/D

I/O

ATN

REQ

+

ACK+

SD[8:15]+

SDP1+

SD[8:15]

SDP1

SDP0+

SD7+
SD6+
SD5+
SD4+
SD3+
SD2+
SD1+
SD0+

SDP0

SD7

SD6

SD5

SD4

SD3

SD2

SD1

SD0

DIFFSENS

1.5 K

1.5 K

VDD

VDD

1.5 K

1.5 K

VDD

1.5 K

1.5 K

1.5 K

Float

Float

VDD

1.5 K

VDD

1.5 K

SN75976A2

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-

SEL+

BSY+

RST+
REQ/

BSY-

RST-

ACK

MSG

C_D

I_O

ATN-

VDD

1.5 K

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)

SN75976A2

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

SD0+

SD1+

SD2+

SD3+

SD4+

SD5+

SD6+

SD7+

SDP0+

SD0

SD1

SD2

SD3

SD4

SD5

SD6

SD7

SDP0

1.5 K