Released
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
Data Sheet
PMC-2000164
ISSUE 3
ENHANCED TT1™ SWITCH FABRIC
2.3.2.19 Transceiver Loopback Mode
Symbol: DXCVLB
Address Offset: 000A8h
Default Value: 00000000h
Access:
Read/Write
Enables a local loopback mode as provided by the transceiver.
NOTE: This is a general output pin and may be used for other purposes.
Bits
Description
31:1
Reserved.
Transceiver Loopback Mode. This bit can be used to enable a local loopback mode as
provided by the transceiver.
0
2.3.2.20 Fiber Optics Link Ready
Symbol: DFORDY
Address Offset: 000ACh
Default Value: 00000000h
Access:
Read Only
Indicates synchronization and idle-ready state of the fiber optics transmitter.
NOTE: This is a general input pin and may be used for other purposes.
Bits
Description
31:2
Reserved.
Egress Link Ready. This bit indicates that the linecard fiber optics transmitter transitioned to
the idle-ready 8B/10B control sequence. The linecard should transition from the idle 8B/10B
control sequence to the idle-ready 8B/10B control sequence when its fiber optics receiver is
synchronized.
1
0
Ingress Link Ready. This bit indicates that the fiber optics receiver is locked to the
synchronization transmitted by the linecard. It causes the fiber optics transmitter to transition
from the idle 8B/10B control sequence to the idle-ready 8B/10B control sequence.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
131
PMC [ PMC-SIERRA, INC ]
