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STANDARD AND PTS INTERRUPTS
Register Location Function
BAUD PTSCB1 + 4 Baud Value
This register contains the 16-bit value that the PTS uses to
generate the desired baud rate. Use the following formula to
calculate the value to load into the BAUD register.
where:
Baud_value is a 16-bit integer that is loaded into the
BAUD register
F
XTAL1
is the input frequency on XTAL1, in MHz
Multiplier is the number 4 in asynchronous modes and
the number 8 in synchronous modes
Baud_rate is the desired baud rate, in bits per second
EPA_prescale is the EPA timer prescale number, 1–64
EPAREG PTSCB1 + 2 EPA Time Register Address
This register contains the 16-bit address of the EPA
x
_TIME or
COMP
x
_TIME register.
PTSCON PTSCB1 + 2 PTS Control Bits
M2:0 PTS Mode
M2 M1 M0
001SIO Receive Mode
011SIO Transmit Mode
SA1:0 Asynchronous, Synchronous Mode Select
SA1 SA0
†
0 0 enables the asynchronous serial I/O
modes
1 1 enables the synchronous serial I/O
modes
†
Always write the same value to both bits.
MAJ Majority Sampling
0 = disable majority sampling in asynchronous receive
mode; always clear in all other modes
1= enable majority sampling in asynchronous receive
mode
PTS Serial I/O Mode Control Block 1 (Continued)
(8XC196MC, MD)
Figure 5-19. PTS Control Block 1 – Serial I/O Mode (Continued)
Baud_value
F
XTAL1
Multiplier Baud_rate EPA_prescale×()
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