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Avago Technologies LSI8751D User Manual

Page 108

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4-16

Signal Descriptions

SCTRL/

LSI53C875,
LSI53C875J:
92, 90, 95, 91,
97, 98, 100,
96, 94

LSI53C875N:
122, 120, 125,
121, 127, 128,
130, 126, 124

LSI53C875JB:
J12, K13,
H11, J11,
H13, H9, G12,
H12, H10

I/O

SCSI Control includes the following signals:
SC_D/

SCSI phase line, command/data

SI_O/

SCSI phase line, input/output

SMSG/

SCSI phase line, message

SREQ/

Data handshake signal from target device

SACK/

Data handshake signal from initiator device

SBSY/

SCSI bus arbitration signal, busy

SATN/

SCSI Attention, the initiator is requesting a
message out phase

SRST/

SCSI bus reset

SSEL/

SCSI bus arbitration signal, select device

SDIR[15:0]

LSI53C875,
LSI53C875J:
131, 132, 134,
135, 80, 81,
82, 83, 120,
121, 122, 124,
125, 126, 127,
129

LSI53C875N:
173, 174, 176,
177, 99, 111,
112, 113, 150,
162, 163, 165,
166, 167, 168,
170

LSI53C875JB:
C9, B9, D8,
C8, N12, N13,
M13, L12,
B13, A13,
A12, C11, E9,
A11, C10, D9

O

Driver direction control for SCSI data lines.

Table 4.9

SCSI SIgnals (Cont.)

Name

Pin No.

LSI53C875,

LSI53C875J,

LSI53C875N,

LSI53C875JB

Type

Description

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