SH7713 datasheet(156/904 Pages) RENESAS

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Section 3 DSP Operating Unit

Rev.1.50 Aug. 30, 2006 Page 116 of 860

REJ09B0288-0150

Table 3.20

Examples of NOPX and NOPY Instruction Codes

Instruction

Code

PADD X0,Y0,A0

MOVX.W @R4+,X0

MOVY.W @R6+R9,Y0

1111100000001011

1011000100000111

PADD X0,Y0,A0

NOPX

MOVY.W @R6+R9,Y0

1111100000000011

1011000100000111

PADD X0,Y0,A0

NOPX

NOPY

1111100000000000

1011000100000111

PADD X0,Y0,A0

NOPX

1111100000000000

1011000100000111

PADD X0,Y0,A0

1111100000000000

1011000100000111

MOVX.W @R4+,X0

MOVY.W @R6+R9,Y0

1111000000001011

MOVX.W @R4+,X0

NOPY

1111000000001000

MOVS.W @R4+,X0

1111010010001000

NOPX

MOVY.W @R6+R9,Y0

1111000000000011

MOVY.W @R6+R9,Y0

1111000000000011

NOPX

NOPY

1111000000000000

NOP

0000000000001001

3.5.3

DSP-Type Data Formats

This LSI has several different data formats that depend on the instruction. This section explains

the data formats for DSP type instructions.

Figure 3.8 shows three DSP-type data formats with different binary point positions. A CPU-type

data format with the binary point to the right of bit 0 is also shown for reference.

The DSP-type fixed point data format has the binary point between bit 31 and bit 30. The DSP-

type integer format has the binary point between bit 16 and bit 15. The DSP-type logical format

does not have a binary point. The valid data lengths of the data formats depend on the instruction

and the DSP register.

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