SH7041A datasheet(197/923 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

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Table 9.2

Special Cache Space

Space Classification

Address

Size

Bus Width

Address array

H'FFFFF000–H'FFFFF3FF

1 kbyte

32 bit

Data array

H'FFFFF400–H'FFFFF7FF

1 kbyte

32 bit

9.3.1

Cache Address Array Read/Write Space

The cache address array has a compulsory read/write (figure 9.3).

Address

Upper 22 bits of the address array space address

(22 bits)

–

(2 bits)

Entry address

(8 bits)

10 9

Data

–

(6 bits)

–

(10 bits)

Tag address

(15 bits)

Valid bit (1 bit)

10 9

26 25 24

Figure 9.3 Cache Address Array

Address Array Read: Designates entry address and reads out the corresponding tag address

value/valid bit value.

Address Array Write: Designates entry address and writes the designated tag address value/valid

bit value.

9.3.2

Cache Data Array Read/Write Space

The cache data array has a compulsory read/write (figure 9.4).

Address

Upper 22 bits of the data array space address

(22 bits)

–

(2 bits)

Entry address

(8 bits)

10 9

Data

(32 bits)

Figure 9.4 Cache Data Array

Data Array Read: Designates entry address and reads out the corresponding line of data.

Data Array Write: Designates entry address and writes designated data to the corresponding line.

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