參數(shù)資料
型號: LSI53C141
英文描述: LSI53C141 SCSI Bus Expander technical manual v2.1 11/00
中文描述: LSI53C141 SCSI總線擴(kuò)展技術(shù)手冊2.1 11/00
文件頁數(shù): 58/166頁
文件大?。?/td> 1330K
代理商: LSI53C141
3-10
SAF-TE Source Code
7.
TWS Bus Configuration:
Bus Speed: Answer 0 -> 0x02; 1 -> 0x01; 2 -> 0x16; 3 -> 0x1C
8.
Register and Device State Maps: The
config
data structure has one
member,
device_state
, which is of type
_dtl
and is populated
automatically during the execution of the
config.exe
program. This
member defines a series of masks that are used to determine the
status of a particular device slot. The values in the structure specify
particular pins. Each time the state machine executes, for each slot,
the state OPC_DEVICE_TO_STATE is executed. This state results in
successive application of the masks defined in the
device_state
member. The matched mask that has the highest priority is the value
reported on a Read Slot Status command. Hence, the configuration
program automatically prioritizes the possible reports.
9.
Data Memory: This element is initialized with all zeros, and then
elements at different data memory indices are modified to reflect the
user selections. Since the SCSI Data memory index is 0x48 and
there are 2 device slots, the first device slot is assigned SCSI ID 7
and the second is assigned ID 6. Likewise, at offset 0x04, the
meaning assigned to each of the four light patterns is established.
For example purposes only, some of the offsets are:
Bus
Number
Speed
Our
ID
0
0x16
0x2A
1
0x1C
0x2A
Offset
Description
0x02
fan (single)
0x04
fan (dual)
0x08
power supply (single)
0X0A
power supply (dual)
0x0E
door lock
0x10
speaker
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