XRT79L71_07 Datasheet, PDF (97/109 Pages) Exar Corporation – 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE

REV. 1.0.0
XRT79L71
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE
FIGURE 18. TIMING DIAGRAM FOR THE TRANSMIT PAYLOAD DATA INPUT INTERFACE WHEN THE XRT79L71 IS
OPERATING IN BOTH THE DS3 AND LOCAL-TIMING MODES
XRT79L71 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}
FIGURE 19. TIMING DIAGRAM FOR THE TRANSMIT PAYLOAD DATA INPUT INTERFACE WHEN THE XRT79L71 IS
OPERATING IN BOTH THE DS3/NIBBLE-PARALLEL AND LOOP-TIMING MODES
RxOutClk
TxNibClk
TxNib[3:0]
TxNibFrame
t13A
t13
t11
t12
Nibble [1175]
Sampling Edge of XRT79L71
Nibble [0]
94