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Data Device Corporation
62743_pre7_noSA-DB.DOC
www.ddc-web.com
8-07-02
9
Transformer must be a DDC recommended transformer or other
transformer that provides an equivalent minimum CMRR.
(8)
Typical value for minimum intermessage gap time.
Under software
control, this may be lengthened to 65,535 ms - message time, in
increments of 1
s. If ENHANCED CPU ACCESS, bit 14 of Configuration
Register #6, is set to logic “1”, then host accesses during BC Start-of-
Message (SOM) and End-of-Message (EOM) transfer sequences could
have the effect of lengthening the intermessage gap time. For each host
access during an SOM or EOM sequence, the intermessage gap time will
be lengthened by 6 clock cycles. Since there are 7 internal transfers
during SOM, and 5 during EOM, this could theoretically lengthen the
intermessage gap by up to 72 clock cycles; i.e., up to 7.2
s with a 10
MHz clock, 6.0
s with a 12 MHz clock, 4.5 s with a 16 MHz clock, or 3.6
s with a 20 MHz clock.
(9)
For Enhanced BC mode, the typical value for intermessage gap time is
approximately 10 clock cycles longer than for the non-enhanced BC
mode. That is, an addition of 1.0
s at 10 MHz, 833 ns at 12 MHz, 625 ns
at 16 MHz, or 500 ns at 20 MHz.
(10) Software programmable (4 options).
Includes RT-to-RT Timeout
(measured mid-parity of transmit Command Word to mid-sync of
transmitting RT Status Word).
(11) Measured from mid-parity crossing of Command Word to mid-sync
crossing of RT's Status Word.
(12)
0JC is measured to the bottom of the case
(13) External 10
F Tantalum and 0.1 F capacitors should be located as
close as possible to Pins 20 and 72, and a 0.1
F at pin 37. The BU-
62864 should also have a 0.1
F at pin 26.
(14) MIL-STD-1760 requires that the PCI Enhanced Mini-ACE produce a 20
Vp-p minimum output on the stub connection.
(15) Power
dissipation
specifications
assume
a
transformer
coupled
configuration with external dissipation (while transmitting) of 0.14 watts for
the active isolation transformer, 0.80 watts for the active bus coupling
transformer, 0.45 watts for each of the two bus isolation resistors and 0.15
watts for each of the two bus termination resistors.
(16) The 5V tolerant pins are RTAD0-5, RTAD_PAR, RTAD_LAT, TXINH_A/B,
and SSFLAG*/EXT_TRIG.
相關(guān)PDF資料 |
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| BU-62743G3-480K | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-62743G3-480 | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-62743G3-482S | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-62743G3-482W | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-62743G3-492W | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BU-62843 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MIL-STD-1553 Components |PCI-Enhanced Mini-ACE? |
| BU-62864 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MIL-STD-1553 Components |PCI-Enhanced Mini-ACE? |
| BU-62-9 | 功能描述:測(cè)試電夾 INSULATOR FOR 60 SERIES WHITE RoHS:否 制造商:Pomona Electronics 類型:Minigrabber clip 顏色:Black |
| 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 零件狀態(tài):有效 類型:測(cè)試夾，引線，探針 配件類型:絕緣體，黑色 配套使用產(chǎn)品/相關(guān)產(chǎn)品:鱷魚夾：BU-60，BU-60C，BU-60CS，BU-60PR2，BU-60S，BU-60TBO，BU-60U，BU-60X，BU-61 規(guī)格:- 標(biāo)準(zhǔn)包裝:1 |
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