PM8621 datasheet(97/184 Pages) PMC

97 / 184 page

NSE-8G™ Standard Product Data Sheet

Preliminary

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

Document ID: PMC-2010850, Issue 1

Bit

Type

Function

Default

Bit 31-3

Unused

Bit 2

SWAPI

Bit 1

UPDATEI

Bit 0

FRAMEI

Writing to this register initiates copying of the active connection memory page to the offline

connection memory page. When a page swap is pending (SWAPV =’1’) writing to this register

may cause a corruption of the connection memory pages.

SWAPI

This bit reports and acknowledges a change of state in the SWAPV bit of the Configuration

output reflects the state of this bit.

UPDATEI

The offline page copy interrupt status bit, UPDATEI reports and acknowledges a change of

state from 1 to 0 in the UPDATEV bit of the Configuration register. This signifies that a page

copy is complete. This bit is cleared when read. When enabled by the UPDATEE bit, the INT

output reflects the state of this bit.

FRAMEI

The frame interrupt status bit reports the sampling of the CMP bit at the expected RC1FP

position. When enabled by FRAMEE, frequency of occurrence of FRAMEI is dependent on

MF_SWAP. When enabled by the FRAMEE bit, the INT output reflects the state of this bit.

MF_SWAP FRAMEI occurs every

1 frame

4 frame

48 frame

This bit is cleared when read.

A change in the CMP input should be sequenced to occur as soon as possible after the

occurrence of FRAMEI. Changing CMP prior to the occurrence of FRAMEI may cause

unpredictable behavior as it may cause CMP to be sampled later than expected.

PM8621 Datasheet(PDF) 97 Page - PMC-Sierra, Inc