MPC8280 datasheet(565/1386 Pages) FREESCALE

565 / 1386 page

Communications Processor Module Overview

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

Freescale Semiconductor

14-15

NOTE

If a reserved command is issued, the CPM enters an unknown state that

requires an external reset to recover.

The commands in Table 14-7 are described in Table 14-8.

1001

—

——

GCI

TIMEOUT

——

START

IDMA

MCC STOP

——

1010

ATM

TRANSMIT

COMMAND

USB STOP

ENDPOINT

RESET

BCS

—

GCI

ABORT

REQUEST

——

—

1011

—

USB

RESTART

ENDPOINT

——

—

STOP

IDMA

——

—

1100

—

——

—

RANDOM

NUMBER

1101

IMA2

VERSION

CHANGE

——

—

11XX

Undefined. Reserved for use by Freescale-supplied RAM microcodes.

1 See FCC1 and FCC2 in SBC[6-10] in Table 13-6. Not available on the MPC8270.

2 MPC8280 only.

Table 14-8. Command Descriptions

Command

Description

INIT TX AND RX

PARAMS

Initialize transmit and receive parameters. Initializes the transmit and receive parameters in the

parameter RAM to the values that they had after the last reset of the CP. This command is especially

useful when switching protocols on a given peripheral controller.

INIT MCC RX AND

TX PARAMS —

ONE CHANNEL

Initialize receive and transmit parameters. Initializes the receive and transmit parameters of the

peripheral controller. Differs from INIT RX AND TX PARAMS in that, for the MCCs, issuing INIT RX

AND TX PARAMS initializes 32 consecutive channels beginning with the channel number specified

in CPCR[MCN], but issuing INIT MCC RX AND TX—ONE CHANNEL initializes only the channel in

the command; see Section 29.7, “MCC Commands.”

INIT RX PARAMS

Initialize receive parameters. Initializes the receive parameters of the peripheral controller. Note that

for the MCCs, issuing this command initializes only 32 channels at a time; see Section 29.7, “MCC

Commands.”

INIT MCC RX

PARAMS

—

ONE CHANNEL

Initialize MCC receive parameters for only a single channel according to MCC channel number field.

See Section 29.7, “MCC Commands.”

Table 14-7. CP Command Opcodes (continued)

Opcode

Channel

FCC

USB

SCC

SMC (UART/

Transparent)

SMC

(GCI)

SPI

I2C

IDMA

MCC

Timer Special

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