PM6341 E1XC
DATA SHEET
PMC-910419
ISSUE 8
E1 FRAMER/TRANSCEIVER
Pin Name Type
Pin No.
Function
PQFP PLCC
47 49
BRFPO
Output
Backplane Frame Pulse Output
(BRFPO). When the E1XC is
configured for backplane receive
frame pulse output, BRFPO pulses
high for 1 BRCLK cycle (or 1 RCLKO
cycle if ELST is by-passed) during bit
1 of each 256-bit frame, indicating the
frame alignment of the BRPCM data
stream.
When configured for backplane
receive signalling multiframe output,
BRFPO pulses high for 1 BRCLK
cycle (or 1 RCLKO cycle if ELST is by-
passed) during bit 1 of frame 1 of the
16 frame signalling multiframe,
indicating the signalling multiframe
alignment of the BRPCM data stream.
(Even when signalling multiframing is
disabled, the BRFPO output continues
th
to indicate every 16 frame.)
When configured for backplane
receive CRC multiframe output,
BRFPO pulses high for 1 BRCLK
cycle (or 1 RCLKO cycle if ELST is by-
passed) during bit 1 of frame 1 of
every 16 frame CRC multiframe,
indicating the CRC multiframe
alignment of the BRPCM data stream.
(Even when CRC multiframing is
disabled, the BRFPO output continues
to indicate the position of bit 1 of the
th
FAS frame every 16 frame.)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
24
PMC [ PMC-SIERRA, INC ]
