Motorola PowerQUICC II MPC8280 Series Reference Manual page 739

3. If the
INIT RX PARAMETERS
command.
HUNT MODE
4. Set GSMR_L[ENR]. Reception begins using the RxBD pointed to by RBPTR,
assuming the E bit is set.
20.3.7.4 Reset Sequence for an SCC Receiver
To reinitialize the SCC receiver to the state it was in after reset, follow these steps:
1. Clear GSMR_L[ENR].
2. Make any modifications then issue the
3. Set GSMR_L[ENR].
20.3.7.5 Switching Protocols
To switch an SCC's protocol without resetting the board or affecting other SCCs, follow
these steps:
1. Clear GSMR_L[ENT, ENR].
2. Make protocol changes in the GSMR and additional parameters then issue the
and
TX RX PARAMETERS
3. Set GSMR_L[ENT, ENR] to enable the SCC with the new protocol.
20.3.8 Saving Power
To save power when not in use, an SCC can be disabled by clearing GSMR_L[ENT, ENR].
MOTOROLA Chapter 20. Serial Communications Controllers (SCCs)
Freescale Semiconductor, Inc.
command was not issued in step 2, issue an
command to initialize both Tx and Rx parameters.
For More Information On This Product,
Go to: www.freescale.com
INIT RX PARAMETERS
SCC Parameter RAM
ENTER
command.
INIT
20-27