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參數(shù)資料
| 型號： | BU-61743G4-680L |
| 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： | 25.40 X 25.40 MM, 3.94 MM HEIGHT, CERAMIC, FP-72 |
| 文件頁數(shù)： | 40/60頁 |
| 文件大小： | 700K |
| 代理商： | BU-61743G4-680L |
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45
Data Device Corporation
www.ddc-web.com
BU-6174X/6184X/6186X
Rev. C
A11
3
Lower 12 bits of 16-bit bi-directional address bus. In both the buffered and transparent
modes, the host CPU accesses the Enhanced Mini-ACE registers and internal RAM by
means of A11 - A0 (4K version). For the 64K versions, A15 - A12 are also used for this
purpose.
In buffered mode, A12-A0 (or A15-A0) are inputs only. In the transparent mode, A12-
A0 (or A15-A0) are inputs during CPU accesses and become outputs, driving outward
(towards the CPU) when the 1553 protocol/memory management logic accesses up to
64K words of external RAM.
In transparent mode, the address bus is driven outward only when the signal DTACK is
low (indicating that the Enhanced Mini-ACE has control of the RAM interface bus) and
IOEN is high, indicating a non-host access. Most of the time, including immediately after
power turn-on, A12-A0 (or A15-A0) will be in high impedance (input) state.
A10
4
A9
69
A8
6
A7
11
A6
22
A5
68
A4
9
A3
10
A2
12
A1
27
A0 (LSB)
15
TABLE 50. PROCESSOR ADDRESS BUS (CONT.)
SIGNAL NAME
DESCRIPTION
BU-6186XFX/GX
BU-6184XFX/GX
BU-6174XFX/GX
PIN
4K RAM
64K RAM
A12 / RTBOOT
70
For BU-6186X (64K RAM versions), this signal is always configured as address line
A12. Refer to the description for A11-A0 below.
For BU-6184X/6174X (4K RAM versions), if UPADDREN is connected to logic "1", this
signal operates as A12.
For BU-6184X/6174X (4K RAM versions), if UPADDREN is connected to logic "0",
then this signal functions as RTBOOT. If RTBOOT is connected to logic "0", the
Enhanced Mini-ACE will initialize in RT mode with the Busy status word bit set follow-
ing power turn-on. If RTBOOT hardwired to logic "1", the Enhanced Mini-ACE will ini-
tialize in either Idle mode (for an RT-only part), or in BC mode (for a BC/RT/MT part).
A12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BU-61743G4-680S | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-61743G4-680 | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-61743G4-690L | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-61743G4-690S | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
| BU-61743G4-700K | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
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| BU-61745F4-100 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| BU-61745F4-110 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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