PM6341 E1XC
DATA SHEET
PMC-910419
ISSUE 8
E1 FRAMER/TRANSCEIVER
SRSMFP SRCMFP Result
1
1
Receive composite multiframe output:
RFP goes high on the falling RCLKO edge
marking the beginning of bit 1 of frame 1 of every
16 frame signalling multiframe, indicating the
signalling multiframe alignment of the
RPCM/RDPCM data stream, and returns low on
the falling RCLKO edge marking the end of bit 1
of frame 1 of every 16 frame CRC multiframe,
indicating the CRC multiframe alignment of the
RPCM/RDPCM data stream. This mode allows
both multiframe alignments to be decoded
externally from the single RFP signal. Note that if
the signalling and CRC multiframe alignments
are coincident, RFP will pulse high for 1 RCLKO
cycle every 16 frames.
TRKEN:
The TRKEN bit enables receive trunk conditioning upon an out-of-frame-
condition. If TRKEN is logic 1, the contents of the ELST Idle Code register
are inserted into all time slots (including TS0 and TS16) of BRPCM if the
framer is out-of-basic frame (i.e. the OOF status bit is logic 1). The TRKEN bit
only has effect if the BRX2RAIL and ELSTBYP bits are both logic 0. If
TRKEN is a logic 0, receive trunk conditioning can still be performed on a
per-timeslot basis via the SIGX Per-Timeslot Trunk Conditioning Data
Registers
Upon reset of the E1XC, these bits are cleared to zero.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
68
PMC [ PMC-SIERRA, INC ]
