参数资料
型号: XRT91L31IQ-F
厂商: Exar Corporation
文件页数: 30/41页
文件大小: 0K
描述: IC TXRX SONET/SDH 8BIT 64QFP
标准包装: 1
类型: 收发器,多路复用器
PLL:
主要目的: 以太网,SONET/SDH
输入: LVCMOS,LVPECL,LVTTL
输出: LVCMOS,LVPECL,LVTTL
电路数: 1
差分 - 输入:输出: 是/是
频率 - 最大: 622.08MHz
电源电压: 3.135 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-FQFP
供应商设备封装: 64-PQFP(10x10)
包装: 托盘
其它名称: 1016-1361
XRT91L31
36
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
REV. 1.0.2
The jitter transfer function is a ratio between the jitter output and jitter input for a component, or system often
expressed in dB. A negative dB jitter transfer indicates the element removed jitter. A positive dB jitter transfer
indicates the element added jitter. A zero dB jitter transfer indicates the element had no effect on jitter.
The jitter attenuator within the XRT91L31 meets the latest jitter attenuation specifications and/or jitter transfer
characteristics as shown in the Figure 26 and Figure 27.
FIGURE 26. JITTER TRANSFER FOR OC-12
FIGURE 27. JITTER TRANSFER FOR OC-3
4.6.3
Jitter Generation
Jitter generation is defined as the amount of jitter at the STS-N output in the absence of applied input jitter. The
bandwidth is set according to the data rate. The Bellcore and ITU requirement for this type jitter is 0.01UI rms
measured with a specific band-pass filter.
For more information on these specifications refer to Bellcore TR-NWT-000253 sections 5.6.2-5 and GR-253-
CORE section 5.6 and ITUT G.783 section 9.3.1.1. Table 19 below shows the jitter generation limits per
BellCore GR-253 and ITUT G.783 versus XRT91L31 typical jitter performance.
Jitter Transfer, OC12 (Low Bandwidth)
-25
-20
-15
-10
-5
0
5
100
1000
10000
100000
1000000
10000000
Frequency (Hz)
Amplitude
in
(dB)
Mask
Jitter Transfer
Jitter Transfer, OC-3 (Low Bandwidth)
-25
-20
-15
-10
-5
0
5
100
1000
10000
100000
1000000
10000000
Frequency (Hz)
Amplitude
in
(dB)
Mask
Jitter Transfer
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XRT91L31IQ-F 制造商:Exar Corporation 功能描述:SONET Transceiver IC
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