PM7344 S/UNI-MPH
DATA SHEET
PMC-950449
ISSUE 6
MULTI-PHY USER NETWORK INTERFACE
Pin Name
Type
Pin Function
No.
RDN[4]
RDN[3]
RDN[2]
RDN[1]/
Input
Receive Digital Negative Line Pulse (RDN).
This signal is available when the S/UNI-MPH is
configured to receive dual-rail formatted data.
The RDN input can be enabled for either RZ or
NRZ waveforms. When enabled for NRZ, RDN
may be enabled to be sampled on the rising or
falling edge of RCLKI. When enabled for RZ,
clock is recovered from the RDP and RDN
inputs.
RLCV[4]
RLCV[3]
RLCV[2]
RLCV[1]/
34
8
Receive Line Code Violation Indication (RLCV).
When the S/UNI-MPH is configured to receive
single-rail data, this signal contains line code
violation indications that are detected by the
upstream line interface unit (LIU). RLCV may
be enabled to be sampled on the rising or falling
edge of RCLKI.
5
2
ROH[4]
ROH[3]
ROH[2]
ROH[1]
Receive Overhead Mask (ROH). When the
S/UNI-MPH is configured to bypass the T1/E1
framers, this signal indicates the framing
overhead in the receive stream, thus allowing
the S/UNI-MPH to provide a user network
interface for arbitrary bit rates (such as the
6.312 Mbit/s J2 rate). ROH may be configured
to be active high or active low, and may be
enabled to be sampled on the rising or falling
edge of RCLKI.
RCLKI[4]
RCLKI[3]
RCLKI[2]
RCLKI[1]
Input
35
9
Receive Line Clock Input (RCLKI). This signal is
the externally recovered 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/ROH inputs on its rising or falling
edge when the input format is enabled for
single-rail, or when the T1/E1 framers are
bypassed. RCLKI must operate at frequencies
less than or equal to 25 MHz.
6
3
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
19
PMC [ PMC-SIERRA, INC ]
