SH7713 datasheet(147/904 Pages) RENESAS

부품명	SH7713

상세설명	Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

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제조업체	RENESAS [Renesas Technology Corp]

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Section 3 DSP Operating Unit

Rev.1.50 Aug. 30, 2006 Page 107 of 860

REJ09B0288-0150

Tables 3.14 and 3.15 show the data type of registers used in DSP instructions. Some instructions

cannot use some registers shown in the tables because of instruction code limitations. For

example, PMULS can use A1 as the source register, but cannot use A0. These tables ignore details

of register selectability.

Table 3.14

Destination Register in DSP Instructions

Guard Bits

Registers

Instructions

Fixed-point, PSHA,

PMULS

Sign-extended 40-bit result

Integer, PDMSB

Sign-extended 24-bit result

Cleared

DSP

operation

Logical, PSHL

Cleared

16-bit result

Cleared

MOVS.W

Sign-extended 16-bit data

Cleared

A0, A1

Data

transfer

MOVS.L

Sign-extended 32-bit data

MOVS.W

Data

No update

A0G, A1G

Data

transfer

MOVS.L

Data

No update

Fixed-point, PSHA,

PMULS

32-bit result

DSP

operation

Integer, logical,

PDMSB, PSHL

16-bit result

Cleared

MOVX/Y.W, MOVS.W

16-bit result

Cleared

X0, X1

Y0, Y1

M0, M1

Data

transfer

MOVS.L

32-bit data

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