SH7041A datasheet(435/923 Pages) RENESAS

Part #	SH7041A

Description	Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

PDF	923 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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435 / 923 page

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12.7.9

Contention between TGR Write and Compare Match

If a compare-match occurs in the T

2 state of the TGR write cycle, data is written to the TGR and a

compare-match signal is issued (figure 12.84).

TGR

Compare

match signal

TCNT

Address

Write signal

TGR write cycle

TGR address

N + 1

TGR write data

Figure 12.84 TGR Write and Compare Match Contention

12.7.10

TCNT2 Write and Overflow/Underflow Contention in Cascade Connection

With timer counters TCNT1 and TCNT2 in a cascade connection, when a contention occurs

during TCNT1 count (during a TCNT2 overflow/underflow) in the T

2 state of the TCNT2 write

cycle, the write to TCNT2 is conducted, and the TCNT1 count signal is prohibited. At this point, if

there is match with TGR1A or TGR1B and the TCNT1 value, a compare signal is issued. The

timing is shown in figure 12.85.

For cascade connections, be sure to synchronize settings for channels 1 and 2 when setting TCNT

clearing.

SH7041A Datasheet(PDF) 435 Page - Renesas Technology Corp