R5F72115D160FPV datasheet(542/1228 Pages) RENESAS

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Section 10 Multi-Function Timer Pulse Unit 2 (MTU2)

Rev. 2.00 May. 08, 2008 Page 518 of 1200

REJ09B0344-0200

10.4.9

A/D Converter Start Request Delaying Function

A/D converter start requests can be issued in channel 4 by making settings in the timer A/D

converter start request control register (TADCR), timer A/D converter start request cycle set

registers (TADCORA_4 and TADCORB_4), and timer A/D converter start request cycle set

buffer registers (TADCOBRA_4 and TADCOBRB_4).

The A/D converter start request delaying function compares TCNT_4 with TADCORA_4 or

TADCORB_4, and when their values match, the function issues a respective A/D converter start

request (TRG4AN or TRG4BN).

A/D converter start requests (TRG4AN and TRG4BN) can be skipped in coordination with

interrupt skipping by making settings in the ITA3AE, ITA4VE, ITB3AE, and ITB4VE bits in

TADCR.

• Example of Procedure for Specifying A/D Converter Start Request Delaying Function

Figure 10.79 shows an example of procedure for specifying the A/D converter start request

delaying function.

Set A/D converter start request cycle

A/D converter start request

delaying function

• Set the timing of transfer

from cycle set buffer register

• Set linkage with interrupt skipping

• Enable A/D converter start

request delaying function

A/D converter start request

delaying function

[1]

[2]

[1] Set the cycle in the timer A/D converter start request cycle

buffer register (TADCOBRA_4 or TADCOBRB_4) and timer

A/D converter start request cycle register (TADCORA_4 or

TADCORB_4). (The same initial value must be specified in

the cycle buffer register and cycle register.)

[2] Use bits BF1 and BF2 in the timer A/D converter start

request control register (TADCR) to specify the timing of

transfer from the timer A/D converter start request cycle

buffer register to A/D converter start request cycle register.

• Specify whether to link with interrupt skipping through bits

ITA3AE, ITA4VE, ITB3AE, and ITB4VE.

• Use bits TU4AE, DT4AE, UT4BE, and DT4BE to enable

A/D conversion start requests (TRG4AN or TRG4BN).

Notes: 1. Perform TADCR setting while TCNT_4 is stopped.

2. Do not set BF1 to 1 when complementary PWM mode

is not selected.

3. Do not set ITA3AE, ITA4VE, ITB3AE, ITB4VE,

DT4AE, or DT4BE to 1 when complementary PWM

mode is not selected.

Figure 10.79 Example of Procedure for Specifying A/D Converter

Start Request Delaying Function

R5F72115D160FPV Datasheet(PDF) 542 Page - Renesas Technology Corp

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