參數(shù)資料
型號(hào): SYM53C141
廠商: LSI CORP
元件分類: 微控制器/微處理器
英文描述: SCSI Bus Expander(SCSI總線擴(kuò)展器)
中文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PQFP128
封裝: PLASTIC, QFP-128
文件頁數(shù): 35/68頁
文件大?。?/td> 630K
代理商: SYM53C141
SCSI B SE and LVD Interface Pins
3-5
3.4 SCSI B SE and LVD Interface Pins
Note: An SE interface uses only the
(minus) signals. LVD interface uses both
the + and
signals.
Table 3.2
SCSI B Signal Description
SCSI B
Pin
Type
Description
B_SD[15:0]+
110, 113, 115,
118, 49, 51, 54,
56, 88, 90, 93, 95,
97, 99, 103, 105
I/O
Differential+ Signal Data (16-bit SCSI bus)
B_SD[15:0]
109, 112, 114,
117, 48, 50, 53,
55, 87, 89, 92, 94,
96, 98, 102, 104
I/O
Differential
Signal Data (16-bit SCSI bus)
B_SDP[1:0]+
108, 85
I/O
Differential+ Signal Data parity bits
B_SDP[1:0]
107, 84
I/O
Differential
Signal Data parity bits
B_SCD
±
63, 64
I/O
Differential Signal Phase line, command/data
B_SIO
±
58, 59
I/O
Differential Signal Phase line, input/output
B_SMSG
±
69, 70
I/O
Differential Signal Phase line, message
B_SREQ
±
60, 61
I/O
Differential Signal Data handshake signal from
target device
B_SACK
±
73, 74
I/O
Differential Signal Data handshake signal from
initiator device
B_SBSY
±
75, 76
I/O
Differential Signal Bus arbitration signal, busy
B_SATN
±
78, 79
I/O
Differential Signal Attention, the initiator is
requesting a message out phase
B_SSEL
±
65, 66
I/O
Differential Signal Bus arbitration signal, select
device
B_SRST
±
71, 72
I/O
Differential Signal Bus Reset
RBIAS
±
81, 82
I
The RBIAS
±
pins need to have a 2.0 k
, 1%
resistor between them to provide the correct bias
current to the LVD pads. Additionally, + 3.3 V
needs to be connected to the RBIAS
, pin 81.
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