NSE-8G™ Standard Product Data Sheet
Preliminary
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
register and is ignored in WORD transfer mode. Valid values are 0-31 when performing
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
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2010850, Issue 1
89
PMC [ PMC-SIERRA, INC ]
