MC68HC705MC4MP datasheet(99/180 Pages) FREESCALE

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Pulse Width Modulator

PWM Control Registers

General Release Specification

Pulse Width Modulator

10.4 PWM Control Registers

The following control registers direct the function of the PWM

subsystem.

•

Control register A (CTL-A)

•

Control register B (CTL-B)

•

Rate register (RATE)

•

Update register (UPDATE)

10.4.1 Control Register A and Control Register B

Control register A directs PWM channel A which can drive PA1, PA3,

and PA5. Control register B directs PWM channel B which can drive

PA2, PA4, and PA6. As the function of CTL-A and CTL-B are identical

except for the channel name. The descriptions below apply to both, and

the channel is referred to as 'x’.

Address:

$0014

Bit 7

654321

Bit 0

Read:

MEA

POLA

MSKA3

MSKA2

MSKA1

CSA3

CSA2

CSA1

Write:

Reset:

00000000

Figure 10-3. PWM Control-A Register (CTL-A)

Address:

$0015

Bit 7

654321

Bit 0

Read:

MEB

POLB

MSKB3

MSKB2

MSKB1

CSB3

CSB2

CSB1

Write:

Reset:

00000000

Figure 10-4. PWM Control-B Register (CTL-B)

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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