PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Register 0012H: Rx2488 Analog CRU Clock Training Configuration and Status
Bit
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
Function
LOS_COUNT[4]
LOS_COUNT[3]
LOS_COUNT[2]
LOS_COUNT[1]
LOS_COUNT[0]
FILL_LEVEL[5]
FILL_LEVEL[4]
FILL_LEVEL[3]
FILL_LEVEL[2]
FILL_LEVEL[1]
FILL_LEVEL[0]
TRAIN
Default
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
0
0
0
0
1
1
0
0
0
0
0
0
0
1
1
R/W
R/W
R/W
R/W
OUTLOCK
OUTDATA
INLOCK
INDATA
The CRU Clock Training Configuration register is provided at RCS_2488 read/write address 2.
INDATA:
The clock difference detector DATA TO LOCK transition configuration bit determines the
number of times the clock difference detector must pass before the CRU control state
machine transitions from the LOCKED TO REFERENCE state to the DATA IN RANGE state.
When INDATA is a logic zero, the clock difference detector must pass once before the state
transition can occur. When INDATA is a logic one, the clock difference detector must pass 39
consecutive times before the state transition can occur.
INLOCK:
The clock difference detector LOCKING TO DATA transition configuration bit determines the
number of times the clock difference detector must pass before the CRU control state
machine transitions from the DATA IN RANGE state to the LOCKED TO DATA state. When
INLOCK is a logic zero, the clock difference detector must pass once before the state
transition can occur. When INLOCK is a logic one, the clock difference detector must pass
39 consecutive times before the state transition can occur.
OUTDATA:
The clock difference detector DROPPING OUT OF LOCK transition configuration bit
determines the number of times the clock difference detector must fail before the CRU control
state machine transitions from the DATA IN RANGE state to the LOCKED TO REFERENCE
state. When OUTDATA is a logic zero, the clock difference detector must fail once before the
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
125
PMC [ PMC-SIERRA, INC ]
