Texas Instruments MSP430x1xx manual Output Unit, 4.Output Modes

Timer_B Operation

12.2.5 Output Unit

Each capture/compare block contains an output unit. The output unit is used to generate output signals such as PWM signals. Each output unit has eight operating modes that generate signals based on the EQU0 and EQUx signals. The TBOUTH pin function can be used to put all Timer_B outputs into a high-impedance state. When the TBOUTH pin function is selected for the pin, and when the pin is pulled high, all Timer_B outputs are in a high-impedance state.

Output Modes

The output modes are defined by the OUTMODx bits and are described in Table 12−4. The OUTx signal is changed with the rising edge of the timer clock for all modes except mode 0. Output modes 2, 3, 6, and 7 are not useful for output unit 0 because EQUx = EQU0.

Table 12−4.Output Modes

OUTMODx	Mode	Description
000	Output	The output signal OUTx is defined by the
		OUTx bit. The OUTx signal updates
		immediately when OUTx is updated.
001	Set	The output is set when the timer counts
		to the TBCLx value. It remains set until a
		reset of the timer, or until another output
		mode is selected and affects the output.
010	Toggle/Reset	The output is toggled when the timer
		counts to the TBCLx value. It is reset
		when the timer counts to the TBCL0
		value.
011	Set/Reset	The output is set when the timer counts
		to the TBCLx value. It is reset when the
		timer counts to the TBCL0 value.
100	Toggle	The output is toggled when the timer
		counts to the TBCLx value. The output
		period is double the timer period.
101	Reset	The output is reset when the timer counts
		to the TBCLx value. It remains reset until
		another output mode is selected and
		affects the output.
110	Toggle/Set	The output is toggled when the timer
		counts to the TBCLx value. It is set when
		the timer counts to the TBCL0 value.
111	Reset/Set	The output is reset when the timer counts
		to the TBCLx value. It is set when the
		timer counts to the TBCL0 value.

12-14Timer_B