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參數(shù)資料
| 型號(hào)： | BU-62864F3-450L |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| 封裝： | 1 INCH, CERAMIC, QFP-72 |
| 文件頁數(shù)： | 65/99頁 |
| 文件大?。?/td> | 578K |
| 代理商： | BU-62864F3-450L |
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Data Device Corporation
62743_pre7_noSA-DB.DOC
www.ddc-web.com
8-07-02
68
stack, that are independent from the BC/RT command stack. The pointers for
these stacks are located at fixed locations in the RAM.
MONITOR SELECTION FUNCTION
Following receipt of a valid command word in Selective Monitor mode, the PCI
Enhanced Mini-ACE will reference the selective monitor lookup table to determine
if this particular command is enabled. The address for this location is determined
by means of an offset based on the RT Address, T/R* bit, and Subaddress bit 4 of
the current command word, and concatenating it to the monitor lookup table base
address of 0280 (hex). The bit location within this word is determined by
subaddress bits 3-0 of the current command word.
If the specified bit in the lookup table is logic “0”, the command is not enabled, and
the PCI Enhanced Mini-ACE will ignore this command. If this bit is logic “1”, the
command is enabled and the PCI Enhanced Mini-ACE will create an entry in the
monitor command descriptor stack (based on the monitor command stack pointer),
and store the data and status words associated with the command into sequential
locations in the monitor data stack. In addition, for an RT-to-RT transfer in which
the receive command is selected, the second command word (the transmit
command) is stored in the monitor data stack.
NOTE: After a command is discarded the monitor will immediately look for another
“Command.” Where only a subset of Subaddresses are enabled, it is possible that
a succeeding Status words may be captured as a “Command”. This will always be
flagged as an error because the Word Count or timing will fail.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BU-62864F3-482K | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-62864F3-592L | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-62864F3-592Q | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-62864F3-592S | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-62864F3-892 | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
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