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參數(shù)資料
| 型號： | CT1611-FP |
| 廠商： | Aeroflex Inc. |
| 英文描述： | DMA Controller with Buffer Memory,MIL-STD-1750A Compatible |
| 中文描述： | DMA控制器與緩沖存儲器，符合MIL - STD - 1750A兼容 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 291K |
| 代理商： | CT1611-FP |
19
SCDCT1611 Rev A
9
GBR
Good Block Received
Active BC mode only
Indicates valid message has been received by bus
controller, set even if transaction is otherwise
not valid.
10
RMD
Received Mode Data
Active only in BC mode
Indicates valid mode data has been returned from RT.
This bit is set even if transaction is otherwise
not valid.
11
BIT SET
Bit(s) set in returned status word(s). Active in BCC
mode only.
Indicates non masked bits in status word(s) are set.
Masked bits are masked in Transaction Word
Register.
Bits include:
Message error bit
Instrumentation bit
Service Request
Reserved Bit(s) (3 bits)
Broadcast Cmd Rcvd bit
Busy bit
Subsystem Flag
Dynamic Bus Control Acceptance bit
Terminal Flag
12
AD ERR
Address in status word(s) error active only in BC mode.
Indicates RTU address in returned status word(s) is incorrect.
13. 14
SW CNT
Returned status word count.
Active only in BC mode.
Two bit non rollover counter for returned status words..
15
BUS ACT ERR
Bus Activity Error
Active in BC mode only.
This bit is set if the bus is active when should be quiet following:
A. Returned mode data (indicates word count high)
B. After status in normal receive, mode without data, and non broadcast RT
to RT.
Bit
Name
Indication (When Set)
Bit 14
Bit 13
Count
0
0
1
1
0
1
0
1
None returned
One returned
Two returned
Three, or greater returned
Error Register con’t
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