PM7344 Datasheet, PDF (92/293 Pages) PMC-Sierra, Inc – SATURN QUAD T1/E1 MULTI-PHY USER NETWORK INTERFACE DEVICE

DATA SHEET
PMC-950449
ISSUE 6
PM7344 S/UNI-MPH
MULTI-PHY USER NETWORK INTERFACE
Registers 003H, 103H, 203H and 303H: Receive Interface Configuration
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Type
R/W
R/W
R/W
R/W
R/W
Function
Unused
Unused
BPV
RDNINV
RDPINV
RUNI
RFALL
Unused
Default
X
X
0
0
0
0
0
X
These registers enable the Receive Interface to handle the various input
waveform formats.
BPV:
When the T1 or E1 format is selected, the BPV bit enables only bipolar
violations to indicate line code violations and be accumulated in the PMON
LCV Count Registers. When BPV is set to logic 1, only BPVs not part of a
valid B8ZS or HDB3 signature generate an LCV indication and increment the
PMON LCV counter. When BPV is set to logic 0, both BPVs not part of a
valid B8ZS signature and excessive zeros (EXZ) generate an LCV indication
and increment the PMON LCV counter. Excessive zeros is a sequence of
zeros greater than 15 bits long for a T1 AMI-coded signal, greater than 7 bits
long for a T1 B8ZS-coded signal, and greater than 3 bits long for an E1 AMI
or HDB3-coded signal.
RDPINV,RDNINV:
The RDPINV and RDNINV bits enable the Receive Interface to logically invert
the signals received onmultifunction pins RDP/RDD[x] and
RDN/RLCV/ROH[x], respectively. When RDPINV is set to logic 1, the
interface inverts the signal on the RDP/RDD[x] input. When RDPINV is set to
logic 0, the interface passes the RDP/RDD[x] signal unaltered. When
RDNINV is set to logic 1, the interface inverts the signal on the
RDN/RLCV/ROH[x] input. When RDNINV is set to logic 0, the interface
passes the RDN/RLCV/ROH[x] signal unaltered.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 76