A/D Converter Start Request Delaying Function - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
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 setting
the ITA3AE, ITA4VE, ITB3AE, and ITB4VE bits in TADCR.
• Example of Procedure for Specifying A/D Converter Start Request Delaying Function
Figure 10.73 shows an example of procedure for specifying the A/D converter start request delaying function.
A/D converter start request
Set A/D converter start request cycle
• 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
Figure 10.73 Example of Procedure for Specifying A/D Converter Start Request Delaying Function
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
delaying function
[1]
[2]
delaying function
[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 UT4AE, 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.
10. Multi-Function Timer Pulse Unit 2
10-126