參數(shù)資料
型號: MH89790B
廠商: Mitel Networks Corporation
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 16/32頁
文件大?。?/td> 488K
代理商: MH89790B
4-202
MH89790B
Preliminary Information
Bipolar Line Transmitter
The MH89790B provides two open collector drivers,
OUTA and OUTB. These outputs are suitable for
driving a center-tapped pulse transformer. Figure 29
illustrates how the two outputs combine to create
opposite polarities of the AMI line code. Each output
steers the transformer into producing a pulse of the
opposite polarity.
Clock Extractor
The MH89790B contains a clock extraction circuit
that generates the E2o clock from the received data.
This clock is used to latch received data. The falling
edge of E2o is approximately aligned with the center
of the received data pulse. Alignment between these
signals can be disrupted by jitter and wander on the
received signal. Maximum tolerance of the
MH89790B to the input jitter is shown in Figure 13
relative to minimum jitter tolerance specified in
G.823 and I.431.
The extracted 8 kHz output (E8Ko) is derived from
E2o clock by dividing it by 256. It can be used by an
external phase-locked loop to generate the system
clock and frame pulse that is synchronized to the
network (see Figure 15).
Figure 13 - Input Jitter Tolerance of MH89790B
- Maximum jitter tolerance of receiver
- Minimum jitter tolerance specified by G.823 and I.431
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20 Hz
2.4 kHz
18 kHz
12 x 10
-8
1 Hz
10 Hz
100 Hz
1 K
10 K
100 K
36.90
20.50
10.0
8.00
2.50
1.5
1.00
0.54
(SINUSOIDAL)
0.20
UI
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JITTER FREQUENCY
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相關(guān)PDF資料
PDF描述
MH89790BN Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
MH89790BS Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
MH89791 CEPT PCM 30 Transmit Equalizer Advance Information
MH89792-1 E1 Transceiver Preliminary Information
MH89792 E1 Transceiver Preliminary Information
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MH89790BN 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ST-BUS⑩ FAMILY CEPT PCM 30/CRC-4 Framer & Interface Preliminary Information
MH89790BS 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ST-BUS⑩ FAMILY CEPT PCM 30/CRC-4 Framer & Interface Preliminary Information
MH89791 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CEPT PCM 30 Transmit Equalizer Advance Information
MH89792 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:E1 Transceiver Preliminary Information
MH89792-1 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:E1 Transceiver Preliminary Information