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参数资料
| 型号： | BU-62743B3-102 |
| 厂商： | DATA DEVICE CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, BGA128 |
| 封装： | 0.815 X 0.815 INCH, 0.140 INCH HEIGHT, 1 MM PITCH, BGA-128 |
| 文件页数： | 51/93页 |
| 文件大小： | 504K |
| 代理商： | BU-62743B3-102 |
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Data Device Corporation
62743_pre2.DOC
www.ddc-web.com
8-15-01
55
Figure 8. RT Circular Buffered Mode
RT DESCRIPTOR STACK
The descriptor stack provides a chronology of all messages processed by the PCI
Enhanced Mini-ACE RT. Reference Figure 6, Figure 7, and Figure 8. Similar to
BC mode, there is a four-word block descriptor in the Stack for each message
processed. The four entries to each block descriptor are the Block Status Word,
Time Tag Word, the pointer to the start of the message’s data block, and the 16-bit
received Command Word.
The RT Block Status Word includes indications of whether a particular message is
ongoing or has been completed, what bus channel it was received on, indications
of illegal commands, and flags denoting various message error conditions. For the
double buffering, subaddress circular buffering, and global circular buffering
modes, the data block pointer may be used for locating the data blocks for specific
messages. Note that for mode code commands, there is an option to store the
transmitted or received data word as the third word of the descriptor, in place of
the data block pointer.
The Time Tag Word provides a 16-bit indication of relative time for individual
messages. The resolution of the PCI Enhanced Mini-ACE’s time tag is
programmable from among 2, 4, 8, 16, 32, or 64 s/LSB. There is also a provision
for using an external clock input for the time tag (consult factory). If enabled, there
CIRCULAR
BUFFER
ROLLOVER
15
13
0
RECEIVED
(TRANSMITTED)
MESSAGE
DATA
(NEXT LOCATION)
128,
256
8192
WORDS
POINTER TO
CURRENT
DATA BLOCK
POINTER TO
NEXT DATA
BLOCK
LOOK-UP TABLE
ENTRY
CIRCULAR
DATA
BUFFER
LOOK-UP TABLES
LOOK-UP
TABLE
ADDRESS
BLOCK STATUS WORD
TIME TAG WORD
DATA BLOCK POINTER
RECEIVED COMMAND
WORD
CONFIGURATION
REGISTER
STACK
POINTERS
DESCRIPTOR
STACK
CURRENT
AREA B/A
1. TX/RS/BCST_SA look-up table entry is updated following valid receive (broadcast) message
or following completion of transit message
Notes:
*
2. For the Global Circular Buffer Mode, the pointer is read from and re-written to Address 0101 (for Area A)
or Adress 0105 (for Area B).
相关PDF资料 |
PDF描述 |
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| BU-62743B3-112L | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, BGA128 |
| BU-62743B4-140 | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, BGA128 |
| BU-62743B4-190 | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, BGA128 |
| BU-62843B3-122 | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, BGA128 |
| BU-62843B3-150Q | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, BGA128 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| BU-62843 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:MIL-STD-1553 Components |PCI-Enhanced Mini-ACE? |
| BU-62864 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:MIL-STD-1553 Components |PCI-Enhanced Mini-ACE? |
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| BU-62-BLU | 制造商:Mueller Electric Company 功能描述:Cable Accessories Insulator Vinyl Blue |
| BU-62S-0 | 功能描述:INSULATOR FOR BU-60 SERIES BLK 制造商:mueller electric co 系列:BU 零件状态:有效 类型:测试夹，引线，探针 配件类型:绝缘体，黑色 配套使用产品/相关产品:鳄鱼夹：BU-60，BU-60C，BU-60CS，BU-60PR2，BU-60S，BU-60TBO，BU-60U，BU-60X，BU-61 规格:- 标准包装:1 |
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