參數(shù)資料
型號(hào): SYM53C140
廠商: LSI CORP
元件分類: 其它接口
英文描述: Ultra2 SCSI Bus Expander(Ultra2 SCSI總線擴(kuò)展器)
中文描述: SPECIALTY INTERFACE CIRCUIT, PQFP160
封裝: 32 MM, PLASTIC, QFP-160
文件頁(yè)數(shù): 33/68頁(yè)
文件大?。?/td> 928K
代理商: SYM53C140
Signal Descriptions
3-5
Table 3.2
SCSI B Side Interface Pins
SCSI B
Pin
Type
Description
B_SSEL+,-
18, 19
I/O
B Side SCSI bus Select control signal.
B_SBSY+,-
30, 31
I/O
B Side SCSI bus Busy control signal.
B_SRST+,-
24, 25
I/O
B Side SCSI bus Reset control signal.
B_SREQ+,-
13, 14
I/O
B Side SCSI bus Request control signal.
B_SACK+,-
28, 29
I/O
B Side SCSI bus Acknowledge control signal.
B_SMSG+,-
20, 21
I/O
B Side SCSI bus Message control signal.
B_SCD+,-
16, 17
I/O
B Side SCSI bus Control and Data control signal.
B_SIO+,-
11, 12
I/O
B Side SCSI bus Input and Output control signal.
B_SATN+,-
33, 34
I/O
B Side SCSI bus Attention control signal.
B_SDP[1:0]+,-
59, 60, 35, 36
I/O
B Side SCSI bus Data Parity signal.
B_SD[15:0]+,-
1-6, 8, 9, 39, 40,
42–47, 49, 50,
52–55, 57, 58, 61,
62, 64, 65, 67–70,
I/O
B Side SCSI bus Data signals.
B_DIFFSENS
159
I
B Side SCSI bus Differential Sense signal.
B_HVD_MODE
157
I
B Side SCSI bus HVD Mode control signal.
Table 3.3
Chip Interface Control Pins
Control
Pin
Type
Description
RESET/
146
I
Master Reset for SYM53C140, active LOW.
WS_ENABLE
150
I/O
Enable/disable SCSI transfers through the SYM53C140.
XFER_ACTIVE
149
I/O
Transfers through the SYM53C140 are enabled/disabled.
CLOCK
147
I
Oscillator input for SYM53C140 (40 MHz).
BSY_LED
148
O
SCSI activity LED output, 8 mA.
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