M38B53M4-059FP datasheet(297/355 Pages) MITSUBISHI

297 / 355 page

38B5 Group User’s Manual

3-49

APPENDIX

3.5 Control registers

Fig. 3.5.29 Structure of timer X mode register 2

Timer X mode register 2

b7 b6 b5 b4 b3 b2 b1 b0

Timer X mode register 2

(TXM2: address 2F16)

Name

Functions

At reset R W

Nothing is arranged for these bits. These are

write disabled bits. When these bits are read

out, the contents are “0”.

Real time port control

bit (P85)

Real time port control

bit (P86)

0: Real time port function is

invalid

1: Real time port function is

valid

0: Real time port function is

invalid

1: Real time port function is

valid

P85 data for real time

port

0: “L” output

1: “H” output

P86 data for real time

port

0: “L” output

1: “H” output

Interrupt interval determination register

b7 b6 b5 b4 b3 b2 b1 b0

Interrupt interval determination register

(IID: address 3016)

Undefined

Functions

At reset R W

• This register stores a value which is obtained

by counting a following interval with the

counter sampling clock.

Rising interval

Falling interval

Both edges interval (Note)

(Selected by interrupt edge selection register)

• Read exclusive register

Note: When the noise filter sampling clock selection bits (bits 2, 3) of

the interrupt interval determination control register is “00”, the

both-sided edge detection function cannot be used.

Fig. 3.5.30 Structure of interrupt interval determination register

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