參數(shù)資料
型號(hào)： NHI-1598ET/883
廠商： NATIONAL HYBRID INC
元件分類： 微控制器/微處理器
英文描述： 2 CHANNEL(S), MIL-STD-1553 CONTROLLER, CPGA69
封裝： 1.100 X 1.100 INCH, CERAMIC, PLUG IN, PGA-69
文件頁(yè)數(shù)： 55/89頁(yè)
文件大?。?/td> 569K
代理商： NHI-1598ET/883
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58
Note: The first three Functions only apply to a bus jam condition.
8.1.1.2
CONFIGURATION REG 1
Address: 9
Mode select - RT, BC, MT.
Start BC.
Select default frame A or B.
Select default bus A or B.
Force bus A or B.
8.1.1.3
FRAME “A” POINTER
Address: 13
Holds address of a selected BC message list.
8.1.1.4
FRAME “A” LENGTH
Address: 14
Holds number of messages in frame A message list.
End of frame A options - Stop, Repeat , Go Alternate.
Stop on frame error.
Stop on status set.
Interrupt at end of frame.
8.1.1.5
FRAME “B” POINTER
Address: 16
Holds address of a selected BC message list
8.1.1.6
FRAME “B” LENGTH
Address: 17
Holds number of messages in frame B message list
.End of frame B options - Stop, Repeat, Go Alternate.
Stop on frame error.
Stop on status set.
Interrupt at end of frame.
8.1.1.7
CONDITION REGISTER
Address 19
Bus A jammed.
Bus B jammed.
Current BC frame A or B.
End of frame A.
End of frame B.
Current frame busy.
8.1.1.8
END OF FRAME GAP
Address: 20
End of frame delay before start of next frame - 64us resolution, 16 bits.
8.1.1.9
CONFIGURATION REG 3
Address: 21
Sets bus jam threshold - the number of extra words( 0- 31) a message can have before a
bus jam is declared.
Defines response to BCST bit if set in status word.
Sets global retry options.
8.1.2
BC RAM
The BC ram is used to store message lists and message tables. A message list is a block of
consecutive memory locations, each of which contains the address of a message table. This list
can contain any number of message table addresses up to a maximum of 1024. Many message
lists can be stored in the ram, limited only by ram size, each one containing a different scenario.
A particular message table may be a member of any number of message lists and occupy the
same or different positions in each list.
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