XRT72L56 Datasheet, PDF (57/486 Pages) Exar Corporation – SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

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PRELIMINARY
XRT72L56
SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. P1.1.2
FIGURE 7. TIMING DIAGRAM FOR THE TRANSMIT OVERHEAD DATA INPUT INTERFACE (METHOD 1 ACCESS)
t21
t22 t23
TxOHClk
TxOHFrame
TxOHIns
TxOH
X bit = 0
t24 t25
Remaining Overhead Bits with DS3 Frame
X bit = 0
FIGURE 8. TIMING DIAGRAM FOR THE TRANSMIT OVERHEAD DATA INPUT INTERFACE (METHOD 2 ACCESS)
TxInClk
TxOHFrame
TxOHEnable
TxOHIns
TxOH
t26 t27
TxOHEnable Pulse # 8
t29A
X bit = 0
t28 t29
XRT72L5x samples TxOH
here.
X bit = 0
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