Released
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
Data Sheet
PMC-2000164
ISSUE 3
ENHANCED TT1™ SWITCH FABRIC
2.3.2.11 Output Bypass Shift Register Depth
Symbol: DOUTBY
Address Offset: 00088h
Default Value: 00000002h
Access:
Read/Write
Programs the depth of the Output Bypass Shift Register between 0 and 7 cells. This register defaults to a
depth of 2 at power-up and reset time and should be changed to a value of 3 for use in a ETT1 system.
Bits
Description
31:3
2:0
Reserved.
Depth Range. Values from 0 to 7.
2.3.2.12 8B/10B Encoder Enable
Symbol: DCODEN
Address Offset: 0008Ch
Default Value: 00000000h
Access:
Read/Write
Enables the 8B/10B Encoder
Bits
Description
31:1
Reserved.
8B/10B Encoder Enable. This bit enables the 8B/10B encoder logic for the fiber optics
transmitter. If the 8B/10B encoder is disabled, no cells are popped from the output fifo. It is
generally a good idea to program the 8B/10B encoder lookup table before the 8B/10B encoder
is enabled.
0
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
127
PMC [ PMC-SIERRA, INC ]
