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參數(shù)資料
| 型號： | MT9173AE1 |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | Digital Subscriber Interface Circuit with RxSB Digital Network Interface Circuit with RxSB |
| 中文描述： | DATACOM, DIGITAL SLIC, PDIP24 |
| 封裝： | 0.300 INCH, LEAD FREE, PLASTIC, MS-001, DIP-24 |
| 文件頁數(shù)： | 6/28頁 |
| 文件大?。?/td> | 613K |
| 代理商： | MT9173AE1 |
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MT9173/74
Data Sheet
6
Zarlink Semiconductor Inc.
Figure 7 - CD Port (Modes 2,6)
Figure 8 - CD Port (Modes 1,5)
In DIGITAL NETWORK (DN) mode, upon entering the DNIC from the DV and CD ports, the B-channel data, D-
channel D0 (and D1 for 160 kbit/s), the HK bit of the C-channel (160 kbit/s only) and a SYNC bit are combined in a
serial format to be sent out on the line by the Transmit Interface (Figures 11, 12). The SYNC bit produces an
alternating 1-0 pattern each frame in order for the remote end to extract the frame alignment from the line. It is
possible for the remote end to lock on to a data bit pattern which simulates this alternating 1-0 pattern that is not the
true SYNC. To decrease the probability of this happening the DNIC may be programmed to put the data through a
prescrambler that scrambles the data according to a predetermined polynomial with respect to the SYNC bit. This
greatly decreases the probability that the SYNC pattern can be reproduced by any data on the line. In order for the
echo canceller to function correctly, a dedicated scrambler is used with a scrambling algorithm which is different for
the SLV and MAS modes. These algorithms are calculated in such a way as to provide orthogonality between the
near and far end data streams such that the correlation between the two signals is very low.
For any two DNICs on a link, one must be in SLV mode with the other in MAS mode. The scrambled data is
differentially encoded which serves to make the data on the line polarity-independent. It is then biphase encoded as
shown in Figure 10. See “Line Interface” section for more details on the encoding. Before leaving the DNIC the
differentially encoded biphase data is passed through a pulse-shaping bandpass transmit filter that filters out the
high and low frequency components and conditions the signal for transmission on the line.
F0
C4
CDSTo
CDSTi
F0o
C
0
C
1
C
2
C
3
C
4
C
5
C
6
C
7
C
0
C
1
C
2
C
3
C
4
C
5
C
6
C
7
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
C
0
C
0
3.9
μ
sec
62.5
μ
sec
125
μ
sec
Channel Time 0
Channel Time 16
CLD
TCK
CDi
CDo
C
0
C
1
C
2
C
3
C
4
C
5
C
6
C
7
C
6
C
7
C
0
C
1
C
0
C
1
C
2
C
3
C
4
C
5
C
6
C
7
C
6
C
7
C
0
C
1
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MT9173AN | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Digital Subscriber Interface Circuit with RxSB |
| MT9173AN1 | 制造商:Microsemi Corporation 功能描述:PB FREE DNIC 1.5UM 制造商:Microsemi Corporation 功能描述:DGTL INTRFC CIRCUIT 24SSOP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SUBSCRIBER NETWRK DSIC 24SSOP 制造商:Microsemi Corporation 功能描述:IC SUBSCRIBER NETWRK DSIC 24SSOP |
| MT9173ANR1 | 制造商:Microsemi Corporation 功能描述:DGTL INTRFC CIRCUIT 24SSOP - Tape and Reel 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SUBSCRIBER NETWRK DSIC 24SSOP 制造商:Microsemi Corporation 功能描述:IC SUBSCRIBER NETWRK DSIC 24SSOP |
| MT9173AP | 制造商:Microsemi Corporation 功能描述:DGTL INTRFC CIRCUIT 28PLCC - Rail/Tube |
| MT9173AP1 | 制造商:Microsemi Corporation 功能描述:DGTL INTRFC CIRCUIT 28PLCC - Rail/Tube |
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