RELEASED
PM7351 S/UNI-VORTEX
DATA SHEET
PMC-1980582
ISSUE 5
OCTAL SERIAL LINK MULTIPLEXER
Byte
Bits
Mnemonic
Description
follows:
“111111” – Stuff cell provided for cell rate
decoupling. The payload carries no useful
data and the cell shall be discarded.
“111110” – Control channel cell. On the
transmit serial link, PHYID shall equal this
value for all cells inserted via the
Microprocessor Cell Buffer and for all cells
received from the Any-PHY interface
whose inband address matches that
programmed by the Control Channel Base
Address register. All cells received on the
serial link with this encoding will be routed
to the local microprocessor if the
ROUTECC register bit is a logic 1.
Otherwise, the cells are routed to the SCI-
PHY/Any-PHY interface.
“100000” to “111101” – Reserved
“000000” to “011111” – Logical channel
index for PHY device.
3
7
BOC
The Bit Oriented Code (BOC) bit position
carries a repeating 16 pattern that encodes
one of 63 possible code words used for
remote control and status reporting. Three
codes are predefined to represent a
remote defect, a loopback activate request
and a loopback deactivate request. The
remaining codes are either reserved or
user defined. The receiver ensures the
pattern is the same for 8 of 10 (default) or
4 of 5 repetitions before validating a new
code word.
Refer to the Bit Oriented Codes section for
more details.
3
6
ACTIVE
The link active bit indicates which of the
redundant links is currently chosen. The
S/UNI-DUPLEX will switch to the link which
contains a one in this location for at least 3
consecutive cells. The line card
microprocessor can override this selection.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
36
PMC [ PMC-SIERRA, INC ]
