參數(shù)資料
型號: XRT75R12IB-L
廠商: Exar Corporation
文件頁數(shù): 21/90頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 12CH 420TBGA
標(biāo)準(zhǔn)包裝: 40
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 12/12
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 420-LBGA 裸露焊盤
供應(yīng)商設(shè)備封裝: 420-TBGA(35x35)
包裝: 托盤
XRT75R12
25
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
REV. 1.0.4
3.5.5
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.
TABLE 4: INTERFERENCE MARGIN TEST RESULTS
MODE
CABLE LENGTH (ATTENUATION)
INTERFERENCE TOLERANCE
E3
0 dB
Equalizer “IN”
-17 dB
12 dB
-14 dB
DS3
0 feet
-15 dB
225 feet
-15 dB
450 feet
-14 dB
STS-1
0 feet
-15 dB
225 feet
-14 dB
450 feet
-14 dB
FIGURE 12. RECEIVER DATA OUTPUT AND CODE VIOLATION TIMING
RxClk
t
RRX
t
FRX
RPOS or
RNEG
LCV
t
LCVO
t
CO
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