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參數(shù)資料
| 型號： | HD4-15530-9 |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 網(wǎng)絡接口 |
| 英文描述： | CMOS Manchester Encoder-Decoder |
| 中文描述： | DATACOM, MANCHESTER ENCODER/DECODER, CQCC28 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 169K |
| 代理商： | HD4-15530-9 |
5-147
MIL-STD-1553
The 1553 standard defines a time division multiplexed data
bus for application within aircraft. The bus is defined to be
bipolar, and encoded in a Manchester II format, so no DC
component appears on the bus. This allows transformer
coupling and excellent isolation among systems and their
environment.
The HD-15530 supports the full bipolar configuration,
assuming a bus driver configuration similar to that in Figure
1. Bipolar inputs from the bus, like Figure 2, are also accom-
modated.
The signaling format in MlL-STD-1553 is specified on the
assumption that the network of 32 or fewer terminals are
controlled by a central control unit by means of Command
Words. Terminals respond with Status Words. Each word is
preceded by a synchronizing pulse, and followed by parity
bit, occupying a total of 20
μ
s. The word formats are shown in
Figure 4. The special abbreviations are as follows:
P
Parity, which is defined to be odd, taken across all 17
bits.
R/T
Receive on logical zero, transmit on ONE.
ME
Message Error if logical 1.
TF
Terminal Flat, if set, calls for controller to request
self-test data.
The paragraphs above are intended only to suggest the
content of MlL-STD-1553, and do not completely describe its
bus requirements, timing or protocols.
FIGURE 6. SIMPLIFIED MIL-STD-1553 DRIVER
FIGURE 7. SIMPLIFIED MIL-STD-1553 RECEIVER
FIGURE 8. MIL-STD-1553 CHARACTER FORMATS
FIGURE 9. MIL-STD-1553 WORD FORMATS
NOTE: This page is a summary of MIL-STD-1553 and is not intended to describe the operation of the HD-15530.
“1”
“0”
BUS
“0”
“1”
BUS
+
-
+
-
“1” REF
“0” REF
COMMAND
SYNC
SYNC
DATA
PERIOD
BIT
PERIOD
BIT
PERIOD
BIT
LOGICAL ONE DATA
LOGICAL ZERO DATA
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
5
5
5
1
P
DATA WORD
COUNT
SUB ADDRESS
/MODE
TERMINAL
ADDRESS
SYNC
COMMAND WORD (FROM CONTROLLER TO TERMINAL)
1
R/T
16
1
P
SYNC
DATA WORD (SENT EITHER DIRECTION)
5
9
1
P
CODE FOR FAILURE MODES
TERMINAL
ADDRESS
SYNC
STATUS WORD (FROM TERMINAL TO CONTROLLER)
1
ME
TF
1
CONTROL WORD
HD-15530
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相關代理商/技術參數(shù) |
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|---|---|
| HD4-15530B6175 | 制造商:Harris Corporation 功能描述: |
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