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| 型號(hào)： | 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(chǔ)器，符合MIL - STD - 1750A兼容 |
| 文件頁(yè)數(shù)： | 10/24頁(yè) |
| 文件大小： | 291K |
| 代理商： | CT1611-FP |
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10
SCDCT1611 Rev A
Summary of I/O Commands for CT1611 1553B Interface
(All Codes HEX)
Bus Controller I/O
Address
Code
(8 Bit Mode)
Description
(Read or Write)
Command Word # 1
XX00 (Low)
XX01 (High)
All Transfers
(Read or Write)
Command Word # 2
XX02
1. Second command word for RT to RT Transfers
2. Also associated mode data for mode change such as sync w/data
3. Also used for RTU vector word
(Read or Write)
Transaction Word
XX0C
Defines type of transfer and BUS selection
(Write Only)
Trigger
XX2A
Triggers Bus Transaction
Note: Command word(s) and transaction code must be loaded
(Read Only)
Status Word 1
XX3C
Return status word for all transactions (first for RT to RT).
Note: This register is preset to FFFF at beginning of transaction and
at reset.
BC (Read Only)
Status Word 2
Rtn’d Mode Data
XX3A
Second returned status word for RT to RT xfers, also preset FFFF.
Also returned mode data, such as vector word and last command.
RTU (Read Only)
Sync w/Data
Sync Word
(Read Only)
Command Word
XX36
Received command word for all transactions. i.e. transmit, receive*
and mode.
* use XX38
(Read Only)
Receive Command Word
XX38
Double Buffered version of above for valid receive commands
(provides more I/O time).
(Read or Write)
Vector Word
XX02
Mode Data
-to be transmitted
- same reg as CW # 2
Examples
Function
Data
Normal xfer
Normal xfer
Bus 0
Bus 1
Bus 0
Bus 1
Bus 0
Bus 1
Bus 0
Bus 1
Bus 0
Bus 1
0000
0008
0001
0009
0003
000B
0005
000D
0007
000F
RT to RT
Mode (No Data)
Mode (No Data)
Mode (Rtn’d Data), i.e. vector word last
cmd, etc.
Mode (ass’td Data), i.e. sync w/data
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