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FUJITSU MB91460 SERIES FR60 User Manual

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Chapter 41 Up/Down Counter

6.Setting

*: For the setting procedure, refer to the section indicated by the number.

*: For the setting procedure, refer to the section indicated by the number.

*: For the setting procedure, refer to the section indicated by the number.

Table 6-3 Required Settings to Run Up/Down Counter in Phase Difference Count Mode (Multiply by 2 or 4)

Setting

Setting registers

Setting

procedure

*

Set the reload value/compare value.

Reload/compare register (UDRC).

See 7.16

(Optional)
Set a value to Up/Down Counter
or
Clear the count value of Up/Down Counter.

Reload/compare register (UDRC)

See 7.5

Count control register (UDCC)

See 7.8

Set a bit length.

Count control register (UDCC)

See 7.1

Set the count mode to phase difference count mode
(Multiply by 2 or 4).

See 7.2

Enable clearing of Up/Down Counter at the time of the
counting following a compare-match.

See 7.6

Enable reloading at the time of underflow.

See 7.7

Enable count control (clear/gate) using the ZIN pin.

See

7.9 and 7.10

Activate Up/Down Counter.

Count status register (UDCS)

See 7.11

Table 6-4 Required Settings for Up/Down Counter Interrupt

Setting

Setting registers

Setting

procedure

*

Set Up/Down Counter interrupt vectors and Up/Down
Counter interrupt levels.

Refer to “

Chapter 24 Interrupt Control

(Page No.311)

”.

See 7.17

Set Up/Down Counter interrupts.
Clear interrupt requests.
Enable interrupt requests.

Count control register (UDCC)
Count status register (UDCS)

See 7.19

Table 6-5 Required Settings to Deactivate Up/Down Counter

Setting

Setting registers

Setting

procedure

*

Deactivate Up/Down Counter
(Controlled through the ZIN pin)

Count control register (UDCC)

See 7.10

Deactivate Up/Down Counter.

Count status register (UDCS)

See 7.11