PM7344 Datasheet, PDF (167/293 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 043H, 143H, 243H and 343H: XIBC Loopback Code
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
R/W
R/W
R/W
Function
IBC7
IBC6
IBC5
IBC4
IBC3
IBC2
IBC1
IBC0
Default
X
X
X
X
X
X
X
X
These registers contain the inband loopback code pattern to be transmitted. The
code is transmitted most significant bit ( IBC7) first, followed by IBC6 and so on.
The code, regardless of the length, must be aligned with the MSB always in the
IBC7 position (e.g., a 5-bit code would occupy the IBC7 through IBC2 bit
positions). To transmit a 3-bit or a 4-bit code pattern, the pattern must be paired
to form a double-sized code (i.e., the 3-bit code '011' would be written as the 6-
bit code '011011').
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 151