MPC8280 datasheet(1177/1386 Pages) FREESCALE

1177 / 1386 page

Inverse Multiplexing for ATM (IMA)

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

Freescale Semiconductor

34-31

34.4.4.2

IMA Group Receive Table Entry

0x26

LINK 21 INFO

Byte

Status and control of link with LID = 21

0x27

LINK 20 INFO

Byte

Status and control of link with LID = 20

0x28

LINK 27 INFO

Byte

Status and control of link with LID = 27

0x29

LINK 26 INFO

Byte

Status and control of link with LID = 26

0x2A

LINK 25 INFO

Byte

Status and control of link with LID = 25

0x2B

LINK 24 INFO

Byte

Status and control of link with LID = 24

0x2C

LINK 31 INFO

Byte

Program to 0x00.

0x2D

LINK 30 INFO

Byte

Status and control of link with LID = 30

0x2E

LINK 29 INFO

Byte

Status and control of link with LID = 29

0x2F

LINK 28 INFO

Byte

Status and control of link with LID = 28

0x30

CRC10

Hword

Microcode-managed area. Microcode will program this field

dynamically.

0x32

END-TO-END

CHANNEL

Byte

Program to any value desired for end-to-end

implementation-dependent signalling, or program to 0x00 if unused.

0x33

UNUSED

Byte

Program to 0x6A.

0x34

TAG

Byte

Internally-used tag value indicating that this is an ICP cell. Program to

0x80.

1 Boldfaced entries in the above table indicate parameters which must be initialized by the user. All other

parameters are managed by the microcode and should be initialized to zero unless otherwise stated.

Table 34-10. IMA Group Receive Table Entry 1

Offset

Name

Width

Description

0x00

IGRCNTL

Byte

IMA group receive control parameters.

0x01

IGRSTATE

Byte

IMA group receive state. Microcode-managed parameter. Initialize to

zero at group startup.

0x02

RIMAID

Byte

Receive IMA ID. Program to the validated receive IMA ID value.

0x03

IMAVER

Byte

IMA version. Program to the validated IMA version value.

1 IMA Version 1.0

3 IMA Version 1.1

0x04

Byte

Receive IMA frame size. Program to 31, 63, 127, or 255 for frame sizes

of 32, 64, 128, or 256, respectively.

0x05

RNUMLINKS

Byte

Number of receive links in the IMA group that are in the active state

(ILRCNTL[RXSC]=01.

0x06

DCB_RM

Byte

Current cell (x out of RM cells in a Frame) being processed by the

reconstruction routine. Microcode-managed parameter. Initialize to

zero at group startup.

Table 34-9. ICP Cell Template (continued)1

Offset

Name

Width

Description

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