XR72L52 Datasheet, PDF (46/480 Pages) Exar Corporation – TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

XRT72L52
REV. 1.0.1
xr
TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
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
t26
t27
TxOHFrame
TxOHEnable Pulse # 8
TxOHEnable
TxOHIns
TxOH
t29A
X bit = 0
t28
t29
XRT72L5x samples TxOH here.
X bit = 0
30