XRT72L56 Datasheet, PDF (56/486 Pages) Exar Corporation – SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

XRT72L56
SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. P1.1.2
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PRELIMINARY
FIGURE 5. TIMING DIAGRAM FOR THE TRANSMIT PAYLOAD DATA INPUT INTERFACE, WHEN THE XRT72L56 DEVICE
IS OPERATING IN BOTH THE DS3/NIBBLE AND LOOPED-TIMING MODES
RxOutClk
TxNibClk
TxNib[3:0]
TxNibFrame
t13A
t13
t11
t12
Nibble [1175]
Sampling Edge of XRT72L5x Device
Nibble [0]
FIGURE 6. TIMING DIAGRAM FOR THE TRANSMIT PAYLOAD DATA INPUT INTERFACE, WHEN THE XRT72L56 DEVICE
IS OPERATING IN THE DS3/NIBBLE AND LOCAL-TIMING MODES
TxInClk
TxNibClk
TxNib[3:0]
TxNibFrame
t18
TxFrameRef
t14
t15
Nibble [1175]
Nibble [0]
t16
t17
DS3 Frame Number N ^{DS3 Frame Number N + 1}
Sampling Edge of the XRT72L5x Device
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