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SH7713 bảng dữ liệu(PDF) 147 Page - Renesas Technology Corp

tên linh kiện SH7713
Giải thích chi tiết về linh kiện  Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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SH7713 bảng dữ liệu(HTML) 147 Page - 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
Register Bits
Registers
Instructions
39
32
31
16
15
0
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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