PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 151

• Manufacturer Part Number: PM5381-BI
• Description: ATM UNI, Single Channel ATM PHY Interface for 2488.32Mbps
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000489, Issue 4
Register 0010H: Rx2488 Analog Interrupt Status
ROOL_I
DOOL_I
Bit
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
The recovered reference out of lock status (ROOL_I is logic 1) indicates that the clock
recovery phase locked loop is unable to lock to the reference clock on REFCLK. At startup,
ROOL_I may remain at logic 1 for several hundred milliseconds while the PLL obtains lock.
If WCIMODE is set to logic 1, only over-writing with a ‘1’ clears this bit. If WCIMODE is
set to logic 0, then a read of this register automatically clears the bit.
The recovered data out of lock status indicates that the clock recovery phase locked loop is
unable to recover and lock to the input data stream. DOOL_I is a logic one if the divided
down recovered clock frequency is not within ±1000 ppm of the REFCLK frequency or if no
transitions have occurred on the RXD input for more than LOS_COUNT[4:0] bits. Note:
recall that LOS_COUNT is specified as the upper 5 bits of a 9 bit number and has an
accuracy of ±15. If WCIMODE is set to logic 1, only over-writing with a ‘1’ clears this bit. If
WCIMODE is set to logic 0, then a read of this register automatically clears the bit.
Type
R
R
R
R
R
R
R
Function
CRU_CLOCK
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
PRBS_SYNC_I
PRBS_ERR_I
FIFO_ERROR_I
LOS_I
DOOL_I
ROOL_I
S/UNI-2488 Telecom Standard Product Datasheet
Default
1
X
X
X
X
X
X
X
X
X
0
0
0
0
0
0
Released
151