XRT79L74 Datasheet, PDF (66/70 Pages) Exar Corporation – 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

XRT79L74
REV. P1.0.0
PRELIMINARY
4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
FIGURE 19. TIMING DIAGRAM FOR THE RECEIVE OVERHEAD DATA OUTPUT INTERFACE (METHOD 1 - USING RXO-
HCLK)
RxOHClk
t59A
RxOHFrame
RxOH
X
F1
AIC
F0
FEAC
t59B
FIGURE 20. TIMING DIAGRAM FOR THE RECEIVE OVERHEAD DATA OUTPUT INTERFACE (METHOD 2 - USING RXO-
HENABLE)
t60
RxOutClk
RxOHEnable
t60A
RxOHFrame
RxOH
UDL
t60B
F1
X1
F1
AIC
64