参数资料
型号: XRT75L06DIB-F
厂商: Exar Corporation
文件页数: 24/103页
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 6CH 217BGA
标准包装: 60
类型: 线路接口装置(LIU)
驱动器/接收器数: 6/6
规程: DS3,E3,STS-1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 217-BBGA
供应商设备封装: 217-BGA(23x23)
包装: 托盘
xr
XRT75L06D
REV. 1.0.4
SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
23
2.5.5
Muting the Recovered Data with LOS condition:
When the LOS condition is declared, the clock recovery circuit locks into the reference clock applied to the
internal master clock outputs this clock onto the RxClk_n output pin. The data on the RxPOS_n and RxNEG_n
pins can be forced to zero by setting the LOSMUT_n bits in the individual channel control register to “1”.
NOTE: When the LOS condition is cleared, the recovered data is output on RxPOS_n and RxNEG_n pins.
2.6
B3ZS/HDB3 Decoder
The decoder block takes the output from the clock and data recovery block and decodes the B3ZS (for DS3 or
STS-1) or HDB3 (for E3) encoded line signal and detects any coding errors or excessive zeros in the data
stream.
Whenever the input signal violates the B3ZS or HDB3 coding sequence for bipolar violation or
contains three (for B3ZS) or four (for HDB3) or more consecutive zeros, an active “High” pulse is generated on
the RLCV_n output pins to indicate line code violation.
FIGURE 12. RECEIVER DATA OUTPUT AND CODE VIOLATION TIMING
SYMBOL
PARAMETER
MIN
TYP
MAX
UNITS
RxClk
Duty Cycle
45
50
55
%
RxClk Frequency
E3
DS-3
STS-1
34.368
44.736
51.84
MHz
tRRX
RxClk rise time (10% o 90%)
2
4
ns
tFRX
RxClk falling time (10% to 90%)
2
4
ns
tCO
RxClk to RPOS/RNEG delay time
4
ns
tLCVO
RxClk to rising edge of LCV output delay
2.5
ns
RxClk
t
RRX
t
FRX
RPOS or
RNEG
LCV
t
LCVO
t
CO
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XRT75L06IB-F IC LIU E3/DS3/STS-1 6CH 217BGA
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