![](http://datasheet.mmic.net.cn/330000/PM7341_datasheet_16444387/PM7341_357.png)
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
PM7341 S/UNI-IMA-84
DATASHEET
PMC-2000223
ISSUE 4
INVERSE MULTIPLEXING OVER ATM
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
359
3) Poll the “Busy” bit in the
Block
Indirect Memory Access Control until it is
cleared.
4)Read returned data from the
Block
Data Indirect Data Register(s).
12.4.2 Configuring Links for Transmission Convergence Operations
After all of the interfaces have been configured, in order to configure a link for
ATM over T1/E1, the mapping from physical link to Any-PHY/UTOPIA address
must be set and the link must be set to TC mode within the IMA sublayer.
Also, all link based statistics should be cleared.
For TC only links, all RIPP tables are not used and should not be programmed.
12.4.2.1
Transmitter
To map the physical link to a ANY-PHY/UTOPIA address, the VPHY address field
must be programmed in the TIMA Physical Link Context Record for the physical
link. All other fields in this table should be cleared to zero. This table may be
accessed by the TIMA Indirect Memory access registers.
To put the physical link into TC mode set the TC_MODE bit in the TXIDCC. This
bit may be accessed by the TXIDCC Indirect Memory Access registers.
12.4.2.2
Receiver
To map the physical link to an Any-PHY/UTOPIA address, the VPHY address
field must be programmed in the RDAT TC Context Record for the physical link.
All other fields in this table should be cleared to zero. This table may be
accessed by the RDAT Indirect Memory access registers.
The RDAT Link Statistics Record, the RDAT TC Group Statistics Record, the
RDAT Link Context Record should also be cleared to zero to reset the statistic
counts. The RDAT Validation Record should be set to TC_MODE.
To put the physical link into TC mode, set the TC_MODE bit in the RXIDCC. This
bit may be accessed by the RXIDCC Indirect Memory Access registers.
Note: To successfully configure a DS3 connection, the configuration must be
done prior to enabling the data flow. This can be done by configuring the RDAT
prior to setting the EXSBI TRIB_ENBL bit and setting the SPEn_ENBL bit.