MPC8540 datasheet(1025/1302 Pages) FREESCALE

1025 / 1302 page

RapidIO Functionality

MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1

Freescale Semiconductor

17-101

Table 17-98 lists requirements for this controller when functioning as a transaction target.

17.5.3.1 Logical Layer Source Transaction Support List

General functionality does not require a device to initiate any operations.

Logical layer errors are generally not recoverable in hardware. They may be recoverable in

software. The device is always the target of a packet for error detection. Table 17-99 lists the errors

detected by the RapidIO controller.

17.5.3.2 Logical Layer Extended Functionality

The RapidIO controller supports I/O read and flush with data GSM transactions, and all I/O and

message transactions as described by the Parallel RapidIO Interconnect Specification except for

atomic test and swap and atomic swap transactions.

Table 17-98. General Device Logical Layer Target Transaction Support List

Item No.

Item Functionality

Meets Reqs?

Maintenance read transaction

1A. DETAIL: Maintenance read request may be for 4 bytes

1B. DETAIL: Maintenance read request generates a maintenance read response

1C. DETAIL: Maintenance read response data payload is 4 bytes

Maintenance write transaction

2A. DETAIL: Maintenance write request may be for 4 bytes

2B. DETAIL: Maintenance write request generates a maintenance write responses

2C. DETAIL: Maintenance write response does not contain a data payload

Table 17-99. General Device Logical Layer Detectable Errors List

Item No.

Item Functionality

Meets Reqs?

Maintenance write packet data payload exceeds size specified in WRSIZE field

Maintenance write packet data payload exceeds supported size

Received maintenance read packet has a data payload

Received maintenance write packet has no data payload

Received maintenance packet uses a reserved field encoding for a required field

Received maintenance packet uses illegal combinations of field encodings

MPC8540 Datasheet(PDF) 1025 Page - Freescale Semiconductor, Inc