Renesas M32R/ECU Series

10
10-110
10.4 TIO (Input/Output-Related 16-Bit Timer)
MULTIJUNCTION TIMERS
32180 Group User’s Manual (Rev.1.0)
10.4.6 TIO Reload 0/ Measure Registers (TIO0RL0–TIO9RL0)
TIO0 Reload 0/ Measure Register (TIO0RL0) <Address: H’0080 0306>
TIO1 Reload 0/ Measure Register (TIO1RL0) <Address: H’0080 0316>
TIO2 Reload 0/ Measure Register (TIO2RL0) <Address: H’0080 0326>
TIO3 Reload 0/ Measure Register (TIO3RL0) <Address: H’0080 0336>
TIO4 Reload 0/ Measure Register (TIO4RL0) <Address: H’0080 0346>
TIO5 Reload 0/ Measure Register (TIO5RL0) <Address: H’0080 0356>
TIO6 Reload 0/ Measure Register (TIO6RL0) <Address: H’0080 0366>
TIO7 Reload 0/ Measure Register (TIO7RL0) <Address: H’0080 0376>
TIO8 Reload 0/ Measure Register (TIO8RL0) <Address: H’0080 0386>
TIO9 Reload 0/ Measure Register (TIO9RL0) <Address: H’0080 0396>
b01234567891011121314b15
TIO0RL0–TIO9RL0
????????????????
<After reset: Undefined>
b Bit Name Function R W
0–15 TIO0RL0–TIO9RL0 16-bit reload register value R(Note 1)
Note 1: This register is protected against write during measure input mode.
Note: • This register must always be accessed in halfwords.
The TIO Reload 0/ Measure Registers serve dual purposes as a register for reloading data into the TIO Count
Registers (TIO0CT–TIO9CT) and as a measure register during measure input mode. These registers are pro-
tected against write during measure input mode.
The content of the reload 0 register is loaded into the counter in the following cases:
• When after the counter started counting in noise processing input mode, the input signal is inverted and a
valid-level signal is entered again before the counter underflows
• When the counter is enabled in single-shot output mode
• When the counter underflowed in delayed single-shot output or continuous output mode
• When the counter is enabled in PWM output mode and when the counter value set by the reload 1 register
underflowed
Simply because data is written to the reload 0 register does not mean that the data is loaded into the counter.
The counter is loaded with data in only the above cases.
If this register is used as a measure register, the counter value is latched into that measure register by event
input.