Motorola PowerQUICC II MPC8280 Series Reference Manual page 1013

30.12.4 FCC Receiver Shortcut Sequence
A shorter sequence is possible if the user prefers to reinitialize the receive parameters to the
state they had after reset. This sequence is as follows:
1. Clear GFMR[ENR].
2. Issue the
INIT RX PARAMETERS
now.
3. Set GFMR[ENR].
30.12.5 Switching Protocols
A user can switch the protocol that the FCC is executing (HDLC) without resetting the
board or affecting any other FCC by taking the following steps:
1. Clear GFMR[ENT] and GFMR[ENR].
2. Issue the
INIT TX AND RX PARAMETERS
transmit and receive parameters. Additional changes can be made in the GFMR to
change the protocol.
3. Set GFMR[ENT] and GFMR[ENR]. The FCC is enabled with the new protocol.
30.13 Saving Power
Clearing an FCC's ENT and ENR bits minimizes its power consumption.
MOTOROLA Chapter 30. Fast Communications Controllers (FCCs)
Freescale Semiconductor, Inc.
command. Any additional changes can be made
For More Information On This Product,
Go to: www.freescale.com
command. This command initializes both
Saving Power
30-23