PM8621 PMC-Sierra, Inc., PM8621 Datasheet - Page 115

• Manufacturer Part Number: PM8621
• Description: NSE-8G Standard Product Data Sheet Preliminary
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2010850, Issue 1
TX_MSG_LVL[3:0]
Table 7 TX FIFO Message Level
IUSER
IPAGE
TX_LINK[1:0]
TX_MSG_LVL_VALID
TX_MSG_LVL[3:0]
0000
:
1000
This indicates the current number of messages in the TXFIFO.
Values greater than 1000 will not occur. The number of free messages available in the FIFO is
given by (8 – TX_MSG_LVL).
This bits are a reflection of the IUSER[2:0]. These reflect the USER bits that will be
transmitted in subsequent message headers. There is no default value for these bits as they are
device dependant.
This bits are a reflection of the IPAGE[1:0. These reflect the PAGE bits that will be
transmitted in subsequent message headers. There is no default value for these bits as they are
device dependant.
These bits reflect the last written value of the TX_LINK field of the TX Control register. The
upper byte of this register therefore reflects all of the configurable bits of the message
Header1 byte.
This bit indicates that the value of TX_MSG_LVL is valid. When read with a ‘0’ this register
should be re-read until TX_MSG_LVL_VALID is a ‘1’. This bit will be clear for only
approximately 0.3% of time.
Number of messages
0
:
8
NSE-8G™ Standard Product Data Sheet
Preliminary
114