peb3456 Infineon Technologies Corporation, peb3456 Datasheet - Page 91

• Manufacturer Part Number: peb3456
• Description: Channelized T3 Termination With Ds3 Framer, M13 Multiplexer, T1/ E1 Framers And 256 Channel Hdlc/ppp Controller
• Manufacturer: Infineon Technologies Corporation

searching for the next FAS word will be start in frame n + 2 just after the previous frame
alignment signal.
Reaching the asynchronous state causes the removal of FSR.LFA and additionally an
By setting TFMR.AXRA the TE3-CHATT automatically transmits the remote alarm
bit = 1 in the outgoing data stream if the receiver detects a loss of frame alignment
FRS.LFA = 1. If the receiver is in synchronous state FRS.LFA = 0 the remote alarm bit
Synchronous state is established after detecting:
• a correct FAS word in frame n,
• the presence of the correct service word (bit 2 = 1) in frame n + 1,
• a correct FAS word in frame n + 2.
If the service word in frame n + 1 or the FAS word in frame n + 2 or both are not found
interrupt vector with LFA bit reset (if not masked). Undisturbed operation starts with the
beginning of the next doubleframe.
4.7.1.2
If the TE3-CHATT detects a remote alarm indication in the received data stream the
interrupt status bit FRS.RRA will be set.
will be reset.
4.7.1.3
The TE3-CHATT allows access to the S
Data Sheet
A-bit Access
S
a
-bit Access
a
-bits via registers RSAW1-3 and XSAW1-3.
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Functional Description
PEB 3456 E
05.2001