SH7615 Datasheet, PDF (86/925 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH
RISC engine Family/SH7600 Series

Table 2.4 Source Register Data Formats for DSP Instructions
Register
Instruction
Guard Bits
39 to 32
Register Bits
31 to 16
15 to 0
A0, A1
DSP
operation
Fixed decimal, 40-bit data
PDMSB,
PSHA
Integer
24-bit data
—
Logic, PSHL, —
PMULS
16-bit data
Data
transfer
MOVX.W,
MOVY.W,
MOVS.W
MOVS.L
32-bit data
A0G, A1G
X0, X1, Y0,
Y1, M0, M1
Data
transfer
DSP
operation
MOVS.W
Data
MOVS.L
Fixed decimal,
PDMSB,
PSHA
Sign^*
—
—
32-bit data
Integer
16-bit data
—
Logic, PSHL, —
PMULS
Data
transfer
MOVS.W
MOVS.L
32-bit data
Note: * The sign is extended and stored in the ALU’s guard bits.
Rev. 2.00, 03/05, page 48 of 884