XRT79L73 Datasheet, PDF (61/71 Pages) Exar Corporation – 3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

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PRELIMINARY
3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
TRANSMIT OVERHEAD DATA INPUT INTERFACE
TRANSMIT OVERHEAD DATA INPUT INTERFACE - TIMING REQUIREMENTS
XRT79L73
REV. P1.0.0
TABLE 10: TIMING INFORMATION FOR THE TRANSMIT OVERHEAD DATA INPUT INTERFACE BLOCK
Test Conditions: TA = 25°C, VDD = 3.3V + 5% unless otherwise specified
SYMBOL
PARAMETER
MIN. TYP.
Transmit Overhead Input Interface Timing - Method 1 (Figure 15)
t₂₁ TxOHClk to TxOHFrame output delay
MAX. UNITS
CONDITIONS
111
ns DS3 Applications
0
ns E3, ITU-T G.832
Applications
t₂₂ TxOHIns set-up time, to falling edge of TxOHClk
194
305
0
ns E3, ITU-T G.751
Applications
ns DS3 Applications
ns E3, ITU-T G.832
Applications
17
t₂₃ TxOHIns hold time, from falling edge of TxOHClk
48
110
ns E3, ITU-T G.751
Applications
ns DS3 Applications
ns E3, ITU-T G.832
Applications
7
t₂₄
TxOH data set-up time, to falling edge of TxOHClk
194
305
ns E3, ITU-T G.751
Applications
ns DS3 Applications
ns E3, ITU-T G.832
Applications
17
t₂₅
TxOH data hold time, from falling edge of TxOHClk
48
110
ns E3, ITU-T G.751
Applications
ns DS3 Applications
ns E3, ITU-T G.832
Applications
7
Transmit Overhead Data Input Interface - Method 2 (Figure 16)
ns E3, ITU-T G.751
Applications
59