XRT75R03D_06 Datasheet, PDF (36/135 Pages) Exar Corporation – EXAR DATA SHEET FORMAT TEMPLATES

XRT75R03D
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
3.0 TIMING CHARACTERISTICS
REV. 1.0.4
FIGURE 4. TYPICAL INTERFACE BETWEEN TERMINAL EQUIPMENT AND THE XRT75R03D (DUAL-RAIL DATA)
TxPOS
TPData
Terminal
Equipment
(E3/DS3 or STS-1
Framer)
TxNEG
TxLineClk
TNData
TxClk
Transmit
Logic
Block
Exar E3/DS3/STS-1 LIU
FIGURE 5. TRANSMITTER TERMINAL INPUT TIMING
TxClk
TPData or
TNData
TTIP or
TRing
t_RTX
t_FTX
t_TSU
t_TDY
t_THO
SYMBOL
PARAMETER
TxClk
Duty Cycle
E3
DS3
STS-1
t_RTX TxClk Rise Time (10% to 90%)
t_FTX TxClk Fall Time (10% to 90%)
t_TSU TPData/TNData to TxClk falling set up time
t_THO TPData/TNData to TxClk falling hold time
t_TDY TTIP/TRing to TxClk rising propagation delay time
MIN
TYP
MAX
UNITS
30
50
70
34.368
44.736
51.84
%
MHz
MHz
MHz
4
ns
4
ns
3
ns
3
ns
8
ns
32