PM4341AT1XC
DATA SHEET
PMC-900602
ISSUE 7
T1 FRAMER/TRANSCEIVER
Pin
Pin No.
Name
Type
PQFP PLCC Function
BRDP
Output 46
48
Backplane Receive Positive Line Pulse
(BRDP). The BRDP signal is available on
this output when the backplane is
configured for dual-rail output. The
BRDP NRZ output represents the RZ
receive digital positive pulse signal
extracted from the input bipolar signal.
BRDP is updated on the falling edge of
RCLKO.
BRSIG/
Output 45
47
Backplane Receive Signalling (BRSIG).
The BRSIG signal is available on this
output when the backplane is configured
for single-rail output. BRSIG contains the
extracted signalling bits for each channel
in the frame, repeated for the entire
superframe. Each channel's signalling
bits are valid in bit locations 5,6,7,8 of the
channel and are channel-aligned with the
BRPCM data stream. When the ELST is
not by-passed, the BRSIG stream is
aligned to the backplane timing and is
updated on the falling edge of BRCLK.
When the ELST is by-passed, BRSIG is
aligned to the receive line timing and is
updated on the falling edge of RCLKO.
BRDN
Backplane Receive Negative Line Pulse
(BRDN). The BRDN signal is available
on this output when the backplane is
configured for dual-rail output. The
BRDN NRZ output represents the RZ
receive digital negative pulse signal
extracted from the input bipolar signal.
BRDN is updated on the falling edge of
RCLKO.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
22
PMC [ PMC-SIERRA, INC ]
