參數(shù)資料
型號： BU-62743G3-492L
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)： 47/99頁
文件大?。?/td> 578K
代理商： BU-62743G3-492L
Data Device Corporation
62743_pre7_noSA-DB.DOC
www.ddc-web.com
8-07-02
51
response time requirement of 2 to 5
s, and multiple options for mode code
subaddresses, mode codes, RT status word, and RT BIT word.
The PCI Enhanced Mini-ACE RT protocol design implements all of the MIL-STD-
1553B message formats and dual redundant mode codes. The design has passed
validation testing for MIL-STD-1553B compliance. The PCI Enhanced Mini-ACE
RT performs comprehensive error checking, word and format validation, and
checks for various RT-to-RT transfer errors. One of the main features of the PCI
Enhanced Mini-ACE RT is its choice of memory management options. These
include
single
buffering
by
subaddress,
circular
buffering
by
individual
subaddresses, and global circular buffering for multiple (or all) subaddresses.
Other features of the PCI Enhanced Mini-ACE RT include a set of interrupt
conditions, an interrupt status queue with filtering based on valid and/or invalid
messages, internal command illegalization, programmable busy by subaddress,
and multiple options on time tagging.
RT MEMORY ORGANIZATION
TABLE 54
illustrates a typical memory map for a PCI Enhanced Mini-ACE RT with
4K RAM. The two Stack Pointers reside in fixed locations in the shared RAM
address space: address 0100h (PCI BAR0 + 200h) for the Area A Stack Pointer
and address 0104h (PCI BAR0 + 208h) for the Area B Stack Pointer. In addition
to the Stack Pointer, there are several other areas of the shared RAM address
space that are designated as fixed locations (all shown in bold). These are for the
Area A and Area B lookup tables, the illegalization lookup table, the busy lookup
table, and the mode code data tables.
The RT lookup tables (reference Table 55) provide a mechanism for allocating data
blocks for individual transmit, receive, or broadcast subaddresses. The RT lookup
tables include subaddress control words as well as the individual data block
pointers. If command illegalization is used, address range 0300-03FF (PCI BAR0
0600-07FEh) is used for command illegalizing. The descriptor stack RAM area, as
well as the individual data blocks, may be located in any of the non-fixed areas in
the shared RAM address space.
Note that in TABLE 54, there is no area allocated for "Stack B". This is shown for
purpose of illustration. Also, note that in TABLE 54, the allocated area for the RT
command stacks is 256 words. However, larger stack sizes are possible. That is,
the RT command stack size may be programmed for 256 words (64 messages),
512, 1024, or 2048 words (512 messages) by means of bits 14 and 13 of
Configuration Register 3.
相關(guān)PDF資料
PDF描述
BU-62843F3-110Q 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72
BU-62843F3-200Q 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72
BU-62843F3-300 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72
BU-62843F3-470Z 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72
BU-62843F3-590Q 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72
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