XRT73L02M Datasheet, PDF (18/46 Pages) Exar Corporation – TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT

XRT73L02M
TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
xr
REV. 1.0.0
FIGURE 5. RECEIVER DATA OUTPUT AND CODE VIOLATION TIMING
RxCLK
LCV
RPOS or
RNEG
t_RRX
t_LCVO
t_CO
t_FRX
SYMBOL
RxClk
t_RRX
t_FRX
t_CO
t_LCVO
PARAMETER
Duty Cycle
E3
DS3
STS-1
RxCLK rise time (10% o 90%)
RxCLKfalling time (10% to 90%)
RxCLKto RPOS/RNEG delay time
RxCLK to rising edge of LCV output delay
MIN
TYP
MAX
UNITS
45
50
55
34.368
44.736
51.84
2
4
%
MHz
MHz
MHz
ns
2
4
ns
4
ns
2.5
ns
FIGURE 6. TRANSMIT INTERFACE CIRCUIT FOR E3, DS3 AND STS-1 RATES
TTIP(n)
R1
31.6Ω +1%
TxPOS(n)
TxNEG(n)
TxLineClk(n)
TPOS(n)
TNEG(n)
TxCLK(n)
RxB
31.6Ω + 1%
RxA
TRING(n)
R2
XRT73L02M (0nly one channel shown)
R3
75Ω
1:1
16