VSC6134
Datasheet
3.13.18 Global MPU Register 17 - FEC Mode Register
Address:
0x011
Register Reset Value:
0xC000
Table 415. Global MPU Register 17 - FEC Mode Register
Reset
Value
Bit
Name
Access
Description
15
FEC_MODE_E
R/W
Configuration bit used to change the FEC mode of
the VSC6134 line side FEC encoder.
1
1
0
0: In this mode, the VSC6134 FEC encoder
functions as a standard FEC encoder. Only RS
encoding is performed (Standard FEC mode).
1: In this mode, the VSC6134 FEC encoder
functions as an enhanced FEC encoder using
proprietary Vitesse algorithm encodes data with
BCH concatenated codes (Enhanced FEC mode).
14
FEC_MODE_D
R/W
Configuration bit used to change the FEC mode of
the VSC6134 line side FEC decoder.
0: In this mode, the VSC6134 FEC decoder
functions as a standard FEC decoder. Only RS
decoding is performed (Standard FEC mode).
1: In this mode, the VSC6134 FEC decoder
functions as an enhanced FEC decoder using
proprietary Vitesse algorithm decodes data with
BCH concatenated codes (Enhanced FEC mode).
13
SONET_SL_MODE
R/W
This bit selects the SONET Termination mode.
0: Line/Multiplexer Section Termination mode
1: Section/Regenerator Section Termination mode
12:10
9
Reserved
RO
000
0
ADD_CLIENT_FEC
R/W
0: Client FEC decoder is bypassed.
1: Client FEC decoder path is selected.
8
7
DROP_CLIENT_FEC
R/W
R/W
0: Client FEC encoder is bypassed.
1: Client FEC encoder path is selected.
0
0
DROP_FEC_PRBS_SEL
0: Normal data is transmitted on the client FEC
interface.
1: Pseudo-random data is transmitted on the client
FEC interface.
6
ADD_RS_DEC_MODE
R/W
Configuration bit used to change the FEC mode of
the VSC6134 client side RS FEC decoder
0: In this mode, the VSC6134 client RS FEC
decoder functions as a standard FEC decoder. Only
RS decoding is performed.
0
1: In this mode, the VSC6134 client RS FEC
decoder only performs OTU frame alignment. No
FEC-related function is performed. Output data is
byte-aligned to the OTU frame.
5:0
Reserved
RO
0x00
377 of 438
VMDS-10185 Revision 4.0
July 2006
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
