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SH7243 Datasheet(PDF) 560 Page - Renesas Technology Corp

Part # SH7243
Description  Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family
PDF  1726 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7243 Datasheet(HTML) 560 Page - Renesas Technology Corp

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Section 11 Multi-Function Timer Pulse Unit 2 (MTU2)
Rev. 1.00 Jun. 26, 2008 Page 530 of 1692
REJ09B0393-0100
11.4.3
Buffer Operation
Buffer operation, provided for channels 0, 3, and 4 enables TGRC and TGRD to be used as buffer
registers. In channel 0, TGRF can also be used as a buffer register.
Buffer operation differs depending on whether TGR has been designated as an input capture
register or as a compare match register.
Note:
TGRE_0 cannot be designated as an input capture register and can only operate as a
compare match register.
Table 11.43 shows the register combinations used in buffer operation.
Table 11.43 Register Combinations in Buffer Operation
Channel
Timer General Register
Buffer Register
0
TGRA_0
TGRC_0
TGRB_0
TGRD_0
TGRE_0
TGRF_0
3
TGRA_3
TGRC_3
TGRB_3
TGRD_3
4
TGRA_4
TGRC_4
TGRB_4
TGRD_4
• When TGR is an output compare register
When a compare match occurs, the value in the buffer register for the corresponding channel is
transferred to the timer general register.
This operation is illustrated in figure 11.14.
Buffer
register
Timer general
register
TCNT
Comparator
Compare match signal
Figure 11.14 Compare Match Buffer Operation



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