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245
Serial Controller Module
Register bit assignment
Bits Access Mnemonic Reset Description
D31 R/W EBIT 0 Bit-rate generator enable
Enables or disables the internal bit-rate
generator.
0 Disables the bit-rate generator
1 Enables the bit-rate generator
D30 R/W TMODE 0 Timing mode
0 16X mode
1 Use TDCR/RDCR
When TMODE is set to 0, the serial
channel is forced to 16X operation.
When TMODE is set to 1, an
oversampling multiplier is chosen by the
TDCR and RDCR fields.
When the transmitter or receiver are
configured to use an external timing
source (TXSRC or RXSRC set to 1), the
serial channel is configured automatically
to operate in 1X mode. The serial channel
clock is provided directly from the OUT1/
OUT2 inputs through the PORTA/PORTC
interface. Setting TXSRC to 1 overrides
any TXEXT setting.
D29 R/W RXSRC 0 Receive clock source
0 Internal
1 External (input through OUT1 signal)
Controls the source of the receiver clock. The
receive clock can be provided by an internal
source, as determined by the value in the RICS
field, or by an input on the OUT1 signal
attached to the PORTA/C ports (configured as
a special function input).
Table 90: Serial Channel Bit-Rate register bit definition