Datasheet

UART Modules
MOTOROLA MCF5206e USER’S MANUAL 12-25
MISC3–MISC0 — Miscellaneous Commands
These bits select a single command as listed in Table 12-8.
The commands are described as follows:
Reset Mode Register Pointer
The reset mode register pointer command causes the mode register pointer to point to
UMR1.
Reset Receiver
The reset receiver command resets the receiver. The receiver is immediately disabled,
the FFULL and RxRDY bits in the USR are cleared, and the receiver FIFO pointer is
reinitialized. All other registers are unaltered. Use this command instead of the receiver-
disable command whenever the receiver configuration is changed (it places the receiver
in a known state).
Reset Transmitter
The reset transmitter command resets the transmitter. The transmitter is immediately
disabled and the TxEMP and TxRDY bits in the USR are cleared. All other registers are
unaltered. Use this command instead of the transmitter-disable command whenever the
transmitter configuration is changed (it places the transmitter in a known state).
Reset Error Status
The reset error status command clears the RB, FE, PE, and OE bits in the USR. This
command is also used in the block mode to clear all error bits after a data block is
received.
Reset Break-Change Interrupt
The reset break-change interrupt command clears the delta break (DBx) bit in the UISR.
Table 12-8. MISCx Control Bits
MISC2 MISC1 MISC0 COMMAND
0 0 0 No Command
0 0 1 Reset Mode Register Pointer
0 1 0 Reset Receiver
0 1 1 Reset Transmitter
1 0 0 Reset Error Status
1 0 1 Reset Break-Change Interrupt
1 1 0 Start Break
1 1 1 Stop Break
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