PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
of operation and the predefined address or address range of the S/UNI-IMA-8
and the number of active ports of the S/UNI-IMA-8.
• Transmit Any-PHY/UTOPIA Cell available Enable
• Receive UTOPIA Cell Available Enable
• Transmit Any-PHY Address Config Register
• Receive Any-PHY/UTOPIA Config register
• Transmit Any-PHY/UTOPIA Config Register
Once the registers are written with the proper configuration information, the
enable bit should be set to enable normal operation.
12.4 IMA_LAYER Configuration
12.4.1 Indirect access to internal memory tables
The IMA-Layer operations are configured by internal memory tables. The access
to these tables is by indirect access. The following procedure applies for the
indirect accesses in the RIPP, RDAT, TIMA, TXIDCC, and RXIDCC blocks.
12.4.1.1
Write accesses
The indirect write access procedure is as follows:
1) Wait until the “BUSY” bit in the Block Indirect Memory Access Control
Register is clear.
2) Once the BUSY bit is clear, write to the Block Data Indirect Data
Register(s) to specifiy the data to be written for that link.
3) Next, write into the Block Indirect Memory Address register specifying the
address that is about to be configured and then write Block Indirect Memory
Command register to specifiy the table to be accessed and whether the
access is to be a write or a read access, by clearing or setting the LWRB bit in
this register. Note that is some instances, the Block Indirect Memory Address
register is combined with the Block Indirect Memory Access Control Register
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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PMC [ PMC-SIERRA, INC ]
