SH7261 datasheet(563/1348 Pages) RENESAS

563 / 1348 page

Section 12 Multi-Function Timer Pulse Unit 2 (MTU2)

Rev. 2.00 Sep. 07, 2007 Page 531 of 1312

REJ09B0320-0200

Figure 12.76 shows another example of A/D converter start request signal (TRG4AN) operation

when TRG4AN output is enabled during TCNT_4 up-counting and A/D converter start requests

are linked with interrupt skipping.

Note:

This function must be used in combination with interrupt skipping.

When interrupt skipping is disabled (the T3AEN and T4VEN bits in the timer interrupt

skipping set register (TITCR) are cleared to 0 or the skipping count set bits (3ACOR and

4VCOR) in TITCR are cleared to 0), make sure that A/D converter start requests are not

linked with interrupt skipping (clear the ITA3AE, ITA4VE, ITB3AE, and ITB4VE bits in

the timer A/D converter start request control register (TADCR) to 0).

TADCORA_4

TCNT_4

A/D converter start request (TRG4AN)

Note: *

When the interrupt skipping count is set to two.

TGIA_3 interrupt

skipping counter

TCIV_4 interrupt

skipping counter

TGIA_3 A/D request-enabled

period

TCIV_4 A/D request-enabled

period

When linked with TGIA_3 and TCIV_4

interrupt skipping

When linked with TGIA_3

interrupt skipping

When linked with TCIV_4

interrupt skipping

(UT4AE/DT4AE = 1)

Figure 12.75 Example of A/D Converter Start Request Signal (TRG4AN) Operation Linked

with Interrupt Skipping

SH7261 Datasheet(PDF) 563 Page - Renesas Technology Corp