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參數(shù)資料
| 型號： | BU-65142D2-540S |
| 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, CQIP78 |
| 封裝： | CERAMIC, QIP-78 |
| 文件頁數(shù)： | 24/26頁 |
| 文件大小： | 247K |
| 代理商： | BU-65142D2-540S |
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7
Data Device Corporation
www.ddc-web.com
BU-65142 and BUS-65142 SERIES
U-05/02-0
FIGURE 2. BUILT-IN-TEST (BIT) WORD REGISTER
DATA SYNC
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
P
CHANNEL A/B - TRANSMITTER TIMEOUT
HANDSHAKE FAILURE
CHANNEL A/B - LOOP TEST FAILURE
MODE CODE - T/R ERROR
{
ILLEGAL OR RESERVED MODE CODE
ILLEGAL USE OF BROADCAST WITH MODE CODE
MESSAGE SERVICING ABORTED DUE TO LOW WORD COUNT
MESSAGE SERVICING ABORTED DUE TO HIGH WORD COUNT
NON-MODE BROADCAST COMMAND TO TRANSMIT
ALWAYS ZERO
CHANNEL B - TRANSMITTER TIMEOUT
CHANNEL B - LOOP TEST FAILURE
CHANNEL B - TRANSMITTER SHUTDOWN
CHANNEL A - LOOP TEST FAILURE
CHANNEL A - TRANSMITTER SHUTDOWN
CHANNEL A - TRANSMITTER TIMEOUT
1. BITS 3-7 ARE CLEARED IN THE BEGINNING OF EACH NEW MESSAGE AND UPDATED AT THE END OF THE MESSAGE.
THEY ONLY REFLECT THE PRESENT COMMAND WORD.
2. BITS 0-2 AND 10-13 ARE LATCHED AND ONLY CLEARED BY A MODE RESET COMMAND OR A MASTER RESET (RESET).
NOTES
3. BITS 8 AND 9 ARE SET ONLY BY THE MODE COMMAND FOR "TRANSMITTER SHUTDOWN" AND ARE CLEARED BY THE MODE COMMAND
FOR "OVERRIDE TRANSMITTER SHUTDOWN" OR "RESET REMOTE TERMINAL". BITS 8 AND 9 ARE ALSO CLEARED BY RESET.
{
NOTE:
The B-2204, B-2388, and 2344 transformers have a slightly different turns ratio on the direct coupled taps than the turns ratio of the BUS-
29854 direct-coupled taps. They do, however, have the same transformer coupled ratios. For transformer coupled applications, either transformer
may be used. The transceiver in the BUS-65143, BUS-65145, BU-65142D2, and BU-65142F2 was designed to work with a 1:0.83 ratio for direct-
coupled applications. For direct-coupled applications, the 1:0.83 turns ratio is recommended, but the 1.25:1 may be used. The 1.25:1 turns ratio will
result in a slightly lower transmitter amplitude (approximately 3.6% lower) and a slight shift in the RT’s receiver threshold.
TABLE 4 ISOLATION TRANSFORMER GUIDE
B-2388, DESC
M21038/27 -13,
B-2334, DESC
M21038/27 -18
BUS-29854
1.0:83
SURFACE
MOUNT
B-2387, B-2343,
DESC
M21038/27 -12,
M21038/27 -17
LPB-5002
LPB-5009
LPB-6002
LPB-6009
LPB-5001
LPB-5008
LPB-6001
LPB-6008
RECOMMENDED XFORMER
PLUG-IN
BUS-25679,
B-2203,
DESC
M21038/27-02
B-2204,DESC
M21038/27-03
XFORMER
COUPLED
2:1
1:0.67
1.25:1
(See Note)
BUS-65143
BUS-65145
BU-65142D2
BU-65142F2
1.41:1
BUS-65142
BUS-65144
BU-65142D1
BU-65142F1
DIRECT
COUPLED
RT PART
NUMBER
TURNS RATIO
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