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參數(shù)資料
| 型號： | XRT83L314IB |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | 14-CHANNEL T1/E1/J1 LONG-HAUL/SHORT-HAUL LINE INTERFACE UNIT |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PBGA304 |
| 封裝： | TBGA-304 |
| 文件頁數(shù)： | 17/84頁 |
| 文件大?。?/td> | 631K |
| 代理商： | XRT83L314IB |
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XRT83L314
14-CHANNEL T1/E1/J1 LONG-HAUL/SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
13
1.0
CLOCK SYNTHESIZER
In system design, fewer clocks on the network card could reduce noise and interference. Common clock
references such as 8kHz are readily available to network designers. Network cards that support both T1 and
E1 modes must be able to produce 1.544MHz and 2.048MHz transmission data. The XRT83L314 has a built
in clock synthesizer that requires only one input clock reference by programming CLKSEL[3:0] in the
appropriate global register. A list of the input clock options is shown in Table 1.
The single input clock reference is used to generate multiple timing references. The first objective of the clock
synthesizer is to generate 1.544MHz and 2.048MHz for each of the 14 channels. This allows each channel to
operate in either T1 or E1 mode independent from the other channels. The state of the equalizer control bits in
the appropriate channel registers determine whether the LIU operates in T1 or E1 mode. The second objective
is to generate additional output clock references for system use. The available output clock references are
shown in Figure 2.
T
ABLE
1: I
NPUT
C
LOCK
S
OURCE
S
ELECT
CLKSEL[3:0]
I
NPUT
C
LOCK
R
EFERENCE
0h (0000)
2.048 MHz
1h (0001)
1.544MHz
2h (0010)
8 kHz
3h (0011)
16 kHz
4h (0100)
56 kHz
5h (0101)
64 kHz
6h (0110)
128 kHz
7h (0111)
256 kHz
8h (1000)
4.096 MHz
9h (1001)
3.088 MHz
Ah (1010)
8.192 MHz
Bh (1011)
6.176 MHz
Ch (1100)
16.384 MHz
Dh (1101)
12.352 MHz
Eh (1110)
2.048 MHz
Fh (1111)
1.544 MHz
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| XRT83L34 | QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83L34IV | QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83SH314 | 14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83SH314_0610 | 14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83SH314IB | 14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT83L314IB-F | 功能描述:時鐘合成器/抖動清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| XRT83L314IB-L | 功能描述:LIN 收發(fā)器 14 channel, LH/SH T1/E1 LIU RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8 |
| XRT83L34 | 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83L34_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83L34ES | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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