HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 313

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

11.4.4
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 11.30 shows the register combinations used in cascaded operation.
Note: When phase counting mode is set for channel 1, the counter clock setting is invalid and the
Table 11.30 Cascaded Combinations
Combination
Channels 1 and 2
counters operates independently in phase counting mode.
Cascaded Operation
H'0F07
H'09FB
H'0532
H'0000
TIOCA
TGRA
TGRC
TCNT value
Figure 11.17
Upper 16 Bits
TCNT_1
H'0532
Example of Buffer Operation (2)
11.
Rev.4.00 Mar. 27, 2008 Page 269 of 882
H'0F07
H'0532
Multi-Function Timer Pulse Unit (MTU)
Lower 16 Bits
TCNT_2
H'09FB
H'0F07
REJ09B0108-0400
Time