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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 35/89頁 |
| 文件大小： | 569K |
| 代理商： | NHI-1598ET/883 |
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39
BUSY
Bits: 3
0= Set by the CPU.
The value of the Busy bit is treated as "Don't Care", and will NOT cause
the STATSET bit to be set no matter what its value in the returned Status
word.
1= Set by the CPU.
The STATSET bit will be set if the Busy bit is set in the returned Status
word.
SSF
Bits: 2
0= Set by the CPU.
The value of the Subsystem Flag bit is treated as "Don't Care", and will
NOT cause the STATSET bit to be set no matter what its value in the
returned Status word.
1= Set by the CPU.
The STATSET bit will be set if the Subsystem Flag bit is set in the
returned Status word.
MSGERR
Bits: 1
0= Set by the CPU. The value of the Message Error bit is treated as "Don't Care", and will
NOT cause the STATSET bit to be set no matter what its value in the
returned Status word.
1= Set by the CPU.
The STATSET bit will be set if the Message Error bit is set in the
returned Status word.
RT_ RT
Bits: 0
0= Set by the CPU.
Message is NOT an RT to RT command.
1= Set by the CPU.
Message IS an RT to RT command.
Note: Status bits treated as "Don't Cares" will NOT cause a STAT_SET.
4.4.2
BC COMMAND WORD
This is the 16 bit Command word that defines the message type as defined by the Mil-Bus.
4.4.3
BC MESSAGE GAP WORD
The BC MESSAGE GAP WORD contains additional information which is specific to the message
in its data table. The word sets the gap time delay to the start of the next message in the list, end
of message stop conditions, the message interrupt and a NOP feature. The resolution of the
Gap counter is 1us and the maximum gap is 4ms. NOP's can be used to extend the inter-
message gap beyond the 4ms maximum which is allowed by the Gap field.
15
14
13
12
11
10
9
8
NOP
EOM_INT
STATSTP
ERRSTP
GAP11
GAP10
GAP09
GAP08
7
6
5
4
3
2
1
0
GAP07
GAP06
GAP05
GAP04
GAP03
GAP02
GAP01
GAP00
NOP
Bits: 15
0= Send message as defined.
1= Do NOT send message. Start Gap Timer and wait till time out, then GoTo next message.
Note: If the last message in a frame is a NOP(bit 15 = '1'), the E-O-F interrupt is disabled
and any interrupts associated with that NOP message are disabled.
EOM_INT
Bits: 14
0= No interrupt at End- of- Message.
1= Interrupt at End- of- Message.
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