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參數(shù)資料
| 型號： | XR-T6166IP |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | Codirectional Digital Data Processor |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 151K |
| 代理商： | XR-T6166IP |
XR-T6166
11
Rev. 2.02
Transmitter Code Conversion
Figure 8shows the transmitter code conversion process
that CCITT G.703 specifies for a 64kbps codirectional
interface.
Step 1
- A 64kbps bit period is divided into four unit
intervals.
Step 2
- A binary 1 is coded as a 1100.
Step 3
- A binary 0 is coded as a 1010.
Step 4
- The binary signal is converted into a three-level
signal by alternating the polarity of consecutive blocks.
Step 5
- The alternation in polarity of the blocks is violated
every eighth block. The violation block marks the last bit
in an octet.
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Bit Number
64kbps data
Steps 1-3
Step 4
Step 5
Octel Timing
Violation
Violation
1
0
0
1
0
0
1
1
1
0
1
1
1
7
8
2
3
4
5
6
7
8
Figure 8. Transmitter Code Conversion for a 64kbps Bipolar Line Signal
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