Texas Instruments MSC1210 - Manual (Page 90)

Using Timer 2
8-16
8.5.4 Timer 2 as a Baud Rate Generator
Timer 2 can be used as a baud rate generator. This is accomplished by setting
either RCLK (T2CON.5) or TCLK (T2CON.4).
With Timer 1, the receive and transmit baud rate must be the same. With Timer
2, however, the user can configure the serial port to receive at one baud rate
and transmit at another. For example, if RCLK is set and TCLK is cleared, seri-
al data is received at the baud rate determined by Timer 2, whereas the baud
rate of transmitted data is determined by Timer 1.
Determining the auto-reload values for a specific baud rate is discussed in
Chapter 9, Serial Communication. The only difference is that in the case of
Timer 2, the auto-reload value is placed in RCAP2H and RCAP2L, and the val-
ue is 16-bit rather than 8-bit.
Note:
When Timer 2 is used as a baud rate generator (either TCLK or RCLK are
set), the Timer 2 overflow flag (TF2) is not set.