Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 575

Powerquicc family

Table of Contents

Section 39.4, "Port-to-Port (PTP) Switching."

Section 31.13, "USB CP Commands."

describes the CP commands.

Initialize transmit and receive parameters. Initializes the CP's temporary Tx and Rx parameters in the

INIT TX AND RX

parameter RAM to the user-defined reset values—often required when switching protocols.

Initialize receive parameters. Initializes the CP's temporary Rx parameters in the parameter RAM to

INIT RX PARAMS

the user-defined reset values—often required when switching protocols.

Initialize transmit parameters. Initializes the CP's temporary Tx parameters in the parameter RAM to

INIT TX PARAMS

the user-defined reset values—often required when switching protocols.

Causes the receiver to stop and wait for a new frame—exact operation depends on the protocol used.

Stop transmission. Stops the transmitting channel as soon as the Tx FIFO has been emptied. It should

only be used when transmission needs to be stopped as quickly as possible. Transmission continues

Graceful stop transmission. Stops the transmitting channel after the whole current frame has been

sent. Transmission continues when

Freescale Semiconductor

Table 18-7. CP Command Opcodes (continued)

(UART/Transparent)

ENTER HUNT MODE

Table 18-8. CP Commands

MPC885 PowerQUICC Family Reference Manual, Rev. 2

is issued and the ready bit is set in the next TxBD.

Communications Processor