XRT72L13 Datasheet, PDF (57/370 Pages) Exar Corporation – M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

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PRELIMINARY
XRT72L13
M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC
REV. P1.0.6
FIGURE 5. TIMING DIAGRAM FOR THE TRANSMIT PAYLOAD DATA INPUT INTERFACE, WHEN THE XRT72L13 IS OPER-
ATING IN THE DS3/NIBBLE AND LOCAL-TIMING MODES
TxInClk
TxNibClk
TxNib[3:0]
TxNibFrame
TxFrameRef
t14
t18
t16
t15
Nibble [1175]
Nibble [0]
t17
DS3 Frame Number N ^{DS3 Frame Number N + 1}
Sampling Edge of the XRT72L13 Device
FIGURE 6. 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
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