IDT82V2604 datasheet(39/98 Pages) RENESAS

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PROGRAMMING INFORMATION for IMAOS04

December 4, 2006

IDT82V2604

Inverse Multiplexing for ATM

Table-22 ConfigGroupWorkMode Command (Encoding: 07H)

This should be the third command issued to configure a group, i.e., this command should follow ConfigGroupInterface command.

Command Parameters

Byte Sequence

Parameter Name

Default

Description

Group ID

The physical group ID (0~3).

This is the same Group ID in ConfigGroupPara command.

Symmetry mode

0: SCSO (Symmetrical Configuration and Symmetrical Operation);

1: SCAO (Symmetrical Configuration and Asymmetrical Operation);

2: ACAO (Asymmetrical Configuration and Asymmetrical Operation)

Note: Value exceeding 2 will be regarded as 0.

Stuff mode

0: ITC (Independent Transmit Clock stuff insertion);

1: CTC (Common Transmit Clock stuff insertion)

If at least one of the links uses independent clock pin as its clock input, stuff mode can only be set as ITC.

If all the links within the group use common clock pin (i.e., TSCCK and RSCCK) as their clock input, stuff

mode can be set as either CTC or ITC.

Note: Wrong configuration will lead to wrong ICP cells.

Stuff adv mode

0: Pre-notify the stuff event 1 frame ahead;

1: Pre-notify the stuff event 4 frames ahead.

ICP stuff cell indication. It tells the FE the distance (unit is IMA frame) between the current ICP cell and

the forthcoming stuff ICP cell.

Note: The upper 7 bits are Don’t Care.

Command Reply

Byte Sequence

Reply Name

Description

1Ack

0: OK;

1: Invalid parameter;

2: The physical group is not configurable;

Others: Internal error. The chip should be reset.

1234

Group ID

Symmetry mode

Stuff mode

Stuff adv mode

Ack

IDT82V2604 Datasheet(PDF) 39 Page - Renesas Technology Corp

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