PM8621 datasheet(90/184 Pages) PMC

90 / 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

In port transfer mode, one port is updated per word of the offline connection memory page.

PORTCFG: new port mapping to be updated to the connection memory page.

WORDADDR: specifies the address of the offline connection memory page.

PORTADDR: port address of the offline connection memory page.

In word transfer mode, an entire word of the offline connection memory page is updated.

PORTCFG: is ignored.

WORDADDR: specifies the address to the offline connection memory page.

PORTADDR: is ignored.

In either mode, the contents read from the off-line connection memory page can be read by

the microprocessor through the Configuration Output register..

PORTCFG[4:0]

This field contains the input port mapping to a particular output port specified in

PORTADDR. Used only in PORT transfer mode. At all other modes, this field is ignored.

PORTADDR[4:0]

When performing writes to the offline connection memory page, this field indicates the

output port to be updated with new mapping in PORTCFG. A PORTADDR of 0 relates to

output port 0 of the DCB.

This field is valid in PORT transfer mode and during reading from the Configuration Output

writes.

When performing reads through the Configuration Output register, PORTADDR indicates the

ports being read as follows:

000xx : ports 5-0

001xx : ports 11-6

010xx : ports 17-12

011xx : ports 23-18

100xx : ports 29-24

PM8621 датащи(PDF) 90 Page - PMC-Sierra, Inc