XRT75L03D Datasheet, PDF (38/134 Pages) Exar Corporation – THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER

XRT75L03D
áç
REV. 1.0.0 THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
FIGURE 5. RECEIVER DATA OUTPUT AND CODE VIOLATION TIMING
RClk
LCV
RPOS or
RNEG
t_RRX
t_LCVO
t_CO
t_FRX
SYMBOL
PARAMETER
RxClk
Duty Cycle
E3
DS3
STS-1
t_RRX RxClk rise time (10% o 90%)
t_FRX RxClk falling time (10% to 90%)
t_CO RxClk to RPOS/RNEG delay time
t_LCVO RxClk to rising edge of LCV output delay
MIN
TYP
MAX
UNITS
45
50
55
34.368
44.736
51.84
%
MHz
MHz
MHz
2
4
ns
2
4
ns
4
ns
2.5
ns
FIGURE 6. TRANSMIT PULSE AMPLITUDE TEST CIRCUIT FOR E3, DS3 AND STS-1 RATES
TTIP(n)
TxPOS(n)
TxNEG(n)
TxLineClk(n)
TPData(n)
TNData(n)
TxClk(n)
TRing(n)
XRT75L03D (0nly one channel shown)
R3
75Ω
1:1
33