MPC8540 datasheet(1012/1302 Pages) FREESCALE

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

17-88

Freescale Semiconductor

RapidIO Interface

Table 17-85 summarizes the defined control symbols. Implementation details for this particular

RapidIO controller are noted in the comments section of the table.

(1011)

Message Class:

(1101)

Response Class:

STATUS: 0000 (done); 0001 (data only); 0011 (retry); 0101 (done intervention); 0110 (Reserved); 0111 (error);

1000–1011 (Reserved); 1100–1111 (User)

TTYPE: 0000 (request resp); 0001 (message resp); 1000 (request resp with data)

Table 17-85. Control Symbol Formats

Symbol

Type

Symbol Format

Comments

(000)

Packet accepted:

The RapidIO controller sets buf_status to 0xF

when it generates a packet accepted control

symbol.

(001)

Packet retry:

None

(010)

Packet not accepted:

Cause

000 Encountered internal error

001 Received unexpected ackID on packet

010 Uncorrectable error on control symbol

011 Input port has been stopped

100 Received bad CRC on packet

111 General error

Table 17-84. RapidIO Packet Format Summary (TT = 0b00) (continued)

Type

Packet Format

PMF

TYPE

TARID

SRCID

MSGLEN

MSB for DW0 --> LSB for DWn

SSIZE

LETTER

MBOX

MSGSEG

PMF

TYPE

TARID

SRCID

TTYPE

MSB for DW0 --> LSB for DWn

STATUS

TARTID

S=1 TgtAckID

00000

BUF_STATUS 000

S=1 TgtAckID

0000

001

00000

S=1 TgtAckID

CAUSE

010

00000

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