PM4341AT1XC Datasheet, PDF (34/288 Pages) PMC-Sierra, Inc – SINGLE DSX-1 TRANSCEIVER DEVICE

DATA SHEET
PMC-900602
Pin
Name
RLCV/
SDN
RCLKI
RAS
REF
ISSUE 7
PM4341A T1XC
T1 FRAMER/TRANSCEIVER
Type
I/O
Input
Input
I/O
Pin No.
PQFP PLCC Function
43 45
48 50
53 55
Receive Line Code Violation Indication
(RLCV). When the T1XC is configured to
receive single-rail data, this input may be
enabled to be sampled on the rising or
falling edge of RCLKI.
Sliced Negative Line Pulse (SDN). This
pin becomes an output when the receive
analog line interface is powered up. A
positive pulse on the SDN output
corresponds to the sampled negative
pulse excursion on the RAS input.
Receive Line Clock Input (RCLKI). This
input is an externally recovered 1.544
MHz line clock that may be enabled to
sample the RDP and RDN inputs on its
rising or falling edge when the input
format is enabled for dual-rail NRZ; or to
sample the RDD and RLCV inputs on its
rising or falling edge when the input
format is enabled for single-rail.
Receive Analog Signal (RAS). This
analog input samples the AC signal on
an external isolation transformer. It is
connected to the positive lead of the
transformer secondary through a passive
attenuation network.
51 53
Receive Reference (REF). This analog
bidirectional pin provides DC bias to an
external isolation transformer. It is
connected to the negative lead of the
transformer secondary and to a
decoupling capacitor to RAVS.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 16