PM4341AT1XC
DATA SHEET
PMC-900602
ISSUE 7
T1 FRAMER/TRANSCEIVER
Pin
Pin No.
Name
Type
PQFP PLCC Function
BRFPI
Input
31
36
Backplane Frame Pulse Input (BRFPI).
This input is used to frame align the
received data to the system backplane. If
frame alignment only is required, a pulse
at least 1 BRCLK cycle wide must be
provided on BRFPI every 193 bit times. If
receive signalling alignment is required,
receive signalling alignment must be
enabled, and a pulse at least 1 BRCLK
cycle wide must be provided on BRFPI
every 12 or 24 frame times. BRFPI is
sampled on the rising edge of BRCLK.
BTPCM/
BTDP
Input
77
8
Backplane Transmit PCM (BTPCM). The
non-return to zero, digital data stream to
be transmitted is input on this pin when
the backplane is configured for single-rail
input.The BTPCM signal is sampled on
the rising edge of BTCLK.
Backplane Transmit Positive Line Pulse
(BTDP). The positive pulse of the dual-
rail signal to be transmitted is input on
this pin when the backplane is configured
for dual-rail input. In dual-rail input mode,
the BTDP input by-passes the
transmitter and is fed directly into the
DJAT. BTDP is sampled on the rising
edge of BTCLK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
24
PMC [ PMC-SIERRA, INC ]
