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參數(shù)資料
| 型號： | CT2566 |
| 廠商： | Aeroflex Inc. |
| 英文描述： | CT2566 MIL-STD-1553 to Microprocessor Interface Unit |
| 中文描述： | CT2566的MIL - STD - 1553的微處理器接口單元 |
| 文件頁數(shù)： | 11/37頁 |
| 文件大?。?/td> | 326K |
| 代理商： | CT2566 |
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Aeroflex Circuit Technology
SCDCT2566 REV B 8/10/99 Plainview NY (516) 694-6700
11
BC Operation
The BC mode is selected by setting the two MSBs of
the Configuration Register to logic "0". This can be done
by writing directly to the register or by issuing a
MSTRCLR or RESET command. Note that a RESET
will also clear the Interrupt Mask Register.
BC Initialization.
For BC operation, the user initializes the RAM as
shown in Table 3 and follows the steps in Figure 11, BC
Initialization. The CPU loads the data blocks with 1553
messages (See Figure 12). The first word of each data
block must contain the Control Word (shown in Figure
13) for the message. The starting addresses of the data
blocks are placed in the fourth word of the Descriptor
Stack in the order the messages are to be transmitted
(i.e. the address of the first message is loaded into the
fourth location of the Stack, the address of the second
message is placed into the eighth location, etc). Once
the data blocks and the Descriptor Stack have been
initialized, the CPU loads the current area message
count with the number of messages to transfer (load in
1’s complement).
Table 3 - Typical BC Memory Map
(4K memory)]
HEX ADDRESS
FUNCTION
Fixed Areas
0100
0101
0104
0105
Stack Pointer A
Message Count A
Stack Pointer B
Message Count B
User Defined Areas
0108-013F
0140-017F
0180-01BF
01C0-01FF
0F00-0FFF
0000-00FF
Not Used
Data Block 1
Data Block 2
Data Block 3
Descriptor Stack A
Descriptor Stack B
CWORD
CWORD
CWORD
CWORD
CWORD
CWORD
RECEIVE
TRANSMIT
RECEIVE
CMODE
TRANSMIT
COMMAND
CWORD
CMODE
CMODE
DATA1
DATA2
DALAST
WORD
WORD
WORD
DATA1
DATA2
DALAST
DATA1
DATA2
DALAST
STATUS
DATA WORD
DATA WORD
DATA WORD
RECEIVED
STATUS
FSTATUS
FROM
RECEIVER
TEREMOTE
TERMINAL
LAWORD
RECEIVED
DLOOPED
CT2565
CT2565
LOOPED
CT2565
BLOOPED
LMODE
CT2565
LMODE
CT2565
DLOOPED
CT2565
CT2566
DATA WORD
TRANSMIT
DRECEIVE
DFORMAT
TRANSMIT
TRANSMIT
CT2565
DFORMAT
MRECEIVE
WITHOUT
DATA
COMMAND
WITH DATA
COMMAND
(NO DATA)
COMMAND
(NO DATA)
Figure 12 – BC Message Data Block Formats
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CT2566-FP | CT2566 MIL-STD-1553 to Microprocessor Interface Unit |
| CT2577 | APPLICATION NOTE #108 |
| CT2579 | APPLICATION NOTE #108 |
| CT2581-02-IN-F84 | CT2578 / CT2581 SIMPLE REMOTE TERMINAL FOR MIL-STD-1553 / 1760 & McAir |
| CT2581-02-IN-P119 | CT2578 / CT2581 SIMPLE REMOTE TERMINAL FOR MIL-STD-1553 / 1760 & McAir |
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