参数资料
型号: XRT83SL314IB-L
厂商: Exar Corporation
文件页数: 14/83页
文件大小: 0K
描述: IC LIU SH T1/E1/J1 14CH 304TBGA
标准包装: 27
类型: 线路接口装置(LIU)
驱动器/接收器数: 14/14
规程: T1,E1,J1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 304-LBGA
供应商设备封装: 304-TBGA(31x31)
包装: 托盘
xr
XRT83SL314
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.1
18
2.2
Equalizer Control
The main objective of the equalizer is to amplify an input attenuated signal to a pre-determined amplitude that
is acceptable to the peak detector circuit. Using feedback from the peak detector, the equalizer will gain the
input up to the maximum value specified by the equalizer control bits, in the appropriate channel register,
normalizing the signal.
Once the signal has reached the pre-determined amplitude, the signal is then
processed within the peak detector and slicer circuit. A simplified block diagram of the equalizer and peak
detector is shown in Figure 6.
FIGURE 6. SIMPLIFIED BLOCK DIAGRAM OF THE EQUALIZER AND PEAK DETECTOR
2.3
Cable Loss Indicator
The ability to monitor the cable loss attenuation of the receiver inputs is a valuable feature. The XRT83SL314
contains a per channel, read only register for cable loss indication. CLOS[5:0] is a 6-Bit binary word that
reports the value of cable loss in 1dB steps. An example of -15dB cable loss attenuation is shown in Figure 7.
FIGURE 7. SIMPLIFIED BLOCK DIAGRAM OF THE CABLE LOSS INDICATOR
Peak
Detector &
Slicer
Rx Equalizer
Control
RTIP
RRING
-15dB of Cable
Loss
Equalizer and
Peak Detector
CLOS[5:0] = 0x0Fh
(15dec = 0Fhex)
-15dB Attenuated
Signal
Read Only
XRT83SL314
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