ST72344K2 datasheet(109/247 Pages) STMICROELECTRONICS

109 / 247 page

ST72344xx, ST2345xx

On-chip peripherals

Doc ID 12321 Rev 6

109/247

Bit 3 = FOLV1 Forced Output Compare 1.

This bit is set and cleared by software.

0: No effect on the OCMP1 pin.

1: Forces OLVL1 to be copied to the OCMP1 pin, if the OC1E bit is set and even if there

is no successful comparison.

Bit 2 = OLVL2 Output Level 2.

This bit is copied to the OCMP2 pin whenever a successful comparison occurs with the

OC2R register and OCxE is set in the CR2 register. This value is copied to the OCMP1

pin in One-pulse mode and Pulse-width modulation mode.

Bit 1 = IEDG1 Input Edge 1.

This bit determines which type of level transition on the ICAP1 pin will trigger the

capture.

0: A falling edge triggers the capture.

1: A rising edge triggers the capture.

Bit 0 = OLVL1 Output Level 1.

The OLVL1 bit is copied to the OCMP1 pin whenever a successful comparison occurs

with the OC1R register and the OC1E bit is set in the CR2 register.

Control register 2 (CR2)

Reset value: 0000 0000 (00h)

Bit 7 = OC1E Output Compare 1 Pin Enable.

This bit is used only to output the signal from the timer on the OCMP1 pin (OLV1 in

Output Compare mode, both OLV1 and OLV2 in PWM and one-pulse mode). Whatever

the value of the OC1E bit, the Output Compare 1 function of the timer remains active.

0: OCMP1 pin alternate function disabled (I/O pin free for general-purpose I/O).

1: OCMP1 pin alternate function enabled.

Bit 6 = OC2E Output Compare 2 Pin Enable.

This bit is used only to output the signal from the timer on the OCMP2 pin (OLV2 in

Output Compare mode). Whatever the value of the OC2E bit, the Output Compare 2

function of the timer remains active.

0: OCMP2 pin alternate function disabled (I/O pin free for general-purpose I/O).

1: OCMP2 pin alternate function enabled.

Bit 5 = OPM One-pulse Mode.

0: One-pulse Mode is not active.

1: One-pulse Mode is active, the ICAP1 pin can be used to trigger one pulse on the

OCMP1 pin; the active transition is given by the IEDG1 bit. The length of the generated

pulse depends on the contents of the OC1R register.

Bit 4 = PWM Pulse-Width Modulation.

0: PWM mode is not active.

1: PWM mode is active, the OCMP1 pin outputs a programmable cyclic signal; the

OC1E

OC2E

OPM

PWM

CC1

CC0

IEDG2

EXEDG

Read/Write

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