ST92F124 datasheet(204/429 Pages) STMICROELECTRONICS

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MULTIFUNCTION TIMER (MFT)

MULTIFUNCTION TIMER (Cont’d)

TIMER MODE REGISTER (TMR)

R249 - Read/Write

Reset value: 0000 0000 (00h)

Bit 7 = OE1: Output 1 enable.

0: Disable the Output 1 (TxOUTB pin) and force it

high.

1: Enable the Output 1 (TxOUTB pin)

The relevant I/O bit must also be set to Alternate

Function

Bit 6 = OE0: Output 0 enable.

0: Disable the Output 0 (TxOUTA pin) and force it

high

1: Enable the Output 0 (TxOUTA pin).

The relevant I/O bit must also be set to Alternate

Function

Bit 5 = BM: Bivalue mode.

This bit works together with the RM1 and RM0 bits

to select the timer operating mode (see Table 41).

0: Disable bivalue mode

1: Enable bivalue mode

Bit 4 = RM1: REG1R mode.

This bit works together with the BM and RM0 bits

to select the timer operating mode. Refer to Table

41.

Note: This bit has no effect when the Bivalue

Mode is enabled (BM=1).

Bit 3 = RM0: REG0R mode.

This bit works together with the BM and RM1 bits

to select the timer operating mode. Refer to Table

41.

Table 41. Timer Operating Modes

Bit 2 = ECK Timer clock control.

0: The prescaler clock source is selected depend-

ing on the IN0 - IN3 bits in the T_ICR register

1: Enter Parallel mode (for Timer 1 and Timer 3

only, no effect for Timer 0 and 2). See Section

10.4.2.12.

Bit 1 = REN: Retrigger mode.

0: Enable retriggerable mode

1: Disable retriggerable mode

Bit 0 = CO: Continous/One shot mode.

0: Continuous mode (with autoreload on End of

Count condition)

1: One shot mode

OE1

OE0

RM1

RM0

ECK

REN

TMR Bits

Timer Operating Modes

BM RM1 RM0

Biload mode

Bicapture mode

Load from REG0R and Monitor on

REG1R

Load from REG0R and Capture on

REG1R

Capture on REG0R and Monitor on

REG1R

Capture on REG0R and REG1R

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