XRT72L50 Datasheet, PDF (39/471 Pages) Exar Corporation – SINGLE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

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XRT72L50
SINGLE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. 1.2.1
1.0 TIMING DIAGRAMS
FIGURE 3. TIMING DIAGRAM FOR TRANSMIT PAYLOAD INPUT INTERFACE, WHEN THE XRT72L50 DEVICE IS OPERAT-
ING IN BOTH THE DS3 AND LOOP-TIMING MODES
XRT72L5x Transmit Payload Data I/F Signals
t3
RxOutClk
TxSer
TxFrame
TxOH_Ind
Payload[4702] Payload[4703]
X-Bit
t2
t1
Payload[0]
t4
DS3 Frame Number N
DS3 Frame Number N + 1
FIGURE 4. TIMING DIAGRAM FOR THE TRANSMIT PAYLOAD INPUT INTERFACE, WHEN THE XRT72L50 DEVICE IS
OPERATING IN BOTH THE DS3 AND LOCAL-TIMING MODES
XRT72L5x Transmit Payload Data I/F Signals
t6
t5
TxInClk
t8
t7
TxSer
TxFrameRef
Payload[4702] ^{Payload[4703]}
X-Bit
Payload[1]
TxOH_Ind
t9
t10
DS3 Frame Number N DS3 Frame Number N + 1
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