M32CSLASH8A datasheet(167/372 Pages) RENESAS

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M32C/8A Group

15. Timers (Timer A)

Rev.1.00

Jul 15, 2007

Page 150 of 352

REJ09B0385-0100

Figure 15.10

UDF Register

b7 b6 b5 b4

Symbol

UDF

Address

0344h

After Reset

00h

Function

Bit Symbol

Bit Name

TA2P

Timer A3 up/down select bit(2)

TA4UD

TA3UD

Timer A2

two-phase pulse signal

processing function select bit(3)

Up/Down Select Register(1)

Timer A4 up/down select bit(2)

Timer A1 up/down select bit(2)

TA1UD

Timer A2 up/down select bit(2)

TA2UD

0: Decrement

1: Increment

Timer A0 up/down select bit(2)

TA0UD

0: Decrement

1: Increment

0: Decrement

1: Increment

0: Decrement

1: Increment

0: Decrement

1: Increment

0: Two-phase pulse signal processing function

disabled

1: Two-phase pulse signal processing function

enabled

NOTES:

1. Read-modify-write instructions cannot be used to set the UDF register. Refer to Usage Notes for details.

2. This bit is enabled when the MR2 bit in the TAiMR register (i = 0 to 4) is set to 0 (the UDF register causes increment/decrement

switching) in event counter mode.

3. Set these bits to 0 when not using the two-phase pulse signal processing function.

TA3P

Timer A3

two-phase pulse signal

processing function select bit(3)

0: Two-phase pulse signal processing function

disabled

1: Two-phase pulse signal processing function

enabled

TA4P

Timer A4

two-phase pulse signal

processing function select bit(3)

0: Two-phase pulse signal processing function

disabled

1: Two-phase pulse signal processing function

enabled

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