SH7046 Datasheet, PDF (233/611 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7046 Series

TCNT value
H'0F07
H'09FB
H'0532
H'0000
TIOCA
Section 10 Multi-Function Timer Pulse Unit (MTU)
Time
TGRA
TGRC
H'0532
H'0F07
H'09FB
H'0532
H'0F07
Figure 10.17 Example of Buffer Operation (2)
10.4.4 Cascaded Operation
In cascaded operation, two 16-bit counters for different channels are used together as a 32-bit
counter.
This function works by counting the channel 1 counter clock upon overflow/underflow of
TCNT_2 as set in bits TPSC0 to TPSC2 in TCR.
Underflow occurs only when the lower 16-bit TCNT is in phase-counting mode.
Table 10.30 shows the register combinations used in cascaded operation.
Note: When phase counting mode is set for channel 1 or 4, the counter clock setting is invalid
and the counters operates independently in phase counting mode.
Table 10.30 Cascaded Combinations
Combination
Channels 1 and 2
Upper 16 Bits
TCNT_1
Lower 16 Bits
TCNT_2
Rev. 4.00 Dec 05, 2005 page 189 of 564
REJ09B0270-0400