TMP88CS38 datasheet(134/226 Pages) TOSHIBA

134 / 226 page

TMP88CS38/CM38A/CP38A

2007-09-12

88CS38-134

2.13.3

Control

PWM output is controlled by PWM control register (PWMCR1A, PWMCR1B, PWMCR2A,

PWMCR2B) and PWM data buffer register (PWMDBR1, PWMDBR2).

PWM Control Register 1A

RESOLUTION

PWMCR1A

(00028H)

−

ABORT1 START3 START2 START1 START0

(Initial value: *000 0000)

ABORT1

Abort PWM operation of

channel 3 to 0

Operation

PWM abort (PWM outputs are fixed to a high level.)

START3

Start channel 3

Stop

PWM

Start

PWM

START2

Start channel 2

Stop

PWM

Start

PWM

START1

Start channel 1

Stop

PWM

Start

PWM

START0

Start channel 0

Stop

PWM

Start

PWM

RESOLUTION1 Select channel 1 resolution

14-bit resolution

12-bit resolution

RESOLUTION2 Select channel 0 resolution

14-bit resolution

12-bit resolution

Write

only

Note 1:

*: Don’t care

Note 2

After set the ABORT1 to “1”, the ABORT1 is cleared to “0” automatically.

Note 3:

PWMCR1A is write-only register and cannot be used with any of the read-modify-write instructions such

as SET, CLR, etc.

PWM Control Register 1B

PWMCHS1

PWMCR1B

(00029H)

PWMHL

(Initial value: **** *000)

PWMCHS1

Select the PWM data latch of

12-bit PWM channel

00: Channel 0

01: Channel 1

10: Channel 2

11: Channel 3

PWMHL

Select upper or lower data

transfer buffer (PWMDBR1)

Lower 8 bits

Upper 4 bits or 6 bits

Write

only

Note 1:

*: Don’t care

Note 2:

PWMCR1B is write-only register and cannot be used with any of the read-modify-write instructions such

as SET, CLR, etc.

PWM Data Buffer Register 1

PWMDBR1

(0002AH)

Write only

(Initial value: 0000 0000)

Note 1:

PWMDBR1 is write-only register and cannot be used with any of the read-modify-write instructions such

as SET, CLR, etc.

Note 2:

When operation mode is changed from STOP mode to NORMAL mode, PWMCR1A, PWMCR1B are

initialized.

Figure 2.13.3 PWM Control Register 1A/1B and PWM Data Buffer Register 1

TMP88CS38 Datasheet(PDF) 134 Page - Toshiba Semiconductor

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