SH7616 datasheet(119/935 Pages) RENESAS

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Section 2 CPU

Rev. 2.00 Mar 09, 2006 page 93 of 906

REJ09B0292-0200

2.5.3

DSP Operation Instruction Set

DSP operation instructions are digital signal processing instructions processed by the DSP unit.

These instructions use 32-bit instruction codes, and multiple instructions are executed in parallel.

The instruction codes are divided into an A field and a B field; parallel data transfer instructions

are designated in the A field, and single or double data operation instructions are designated in the

B field. Instructions can be independently designated and execution can also be carried out

independently. A parallel data transfer instruction designated in the A field is exactly the same as a

double data transfer instruction.

The B field data operation instructions are divided into three groups: double data operation

instructions, conditional single data operation instructions, and unconditional single data operation

instructions. Table 2.32 lists the instruction formats of the DSP operation instructions. Each of the

operands can be independently selected from the DSP registers. Table 2.33 shows the

correspondence between the DSP operation instruction operands and registers.

Table 2.32 DSP Operation Instruction Formats

Classification

Instruction Forms

Instruction

Double data operation instructions

(6 operands)

ALUop. Sx, Sy, Du

MLTop. Se, Sf, Dg

PADD PMULS,

PSUB PMULS

Conditional single data

operation instructions

3 operands

ALUop. Sx, Sy, Dz

DCT ALUop. Sx, Sy, Dz

DCF ALUop. Sx, Sy, Dz

PADD, PAND, POR,

PSHA, PSHL, PSUB,

PXOR

2 operands

ALUop. Sx, Dz

DCT ALUop. Sx, Dz

DCF ALUop. Sx, Dz

ALUop. Sy, Dz

DCT ALUop. Sy, Dz

DCF ALUop. Sy, Dz

PCOPY, PDEC,

PDMSB, PINC,

PLDS, PSTS, PNEG

1 operand

ALUop. Dz

DCT ALUop. Dz

DCF ALUop. Dz

PCLR, PSHA #imm,

PSHL #imm

Unconditional single data

operation instructions

3 operands

ALUop. Sx, Sy, Du

MLTop. Se, Sf, Dg

PADDC, PSUBC,

PMULS

2 operands

ALUop. Sx, Dz

ALUop. Sy, Dz

ALUop. Sx, Sy

PCMP, PABS, PRND

1 operand

ALUop. Dz

PSHA #imm,

PSHL #imm

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