HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 209

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

3.5.12
The DSP unit of this LSI provides additional two independent registers, MACL and MACH, in
order to support CPU standard multiply/MAC operations. They can be also used as temporary
storage registers by local data move instructions between MACH/L and other DSP registers.
Figure 3.22 shows the flow of seven local data move instructions. Table 3.33 shows the variation
of this type of instruction.
Table 3.33 Variation of Local Data Move Operations
This instruction is very similar to other transfer instructions. If either the A0 or A1 register is
specified as the destination operand of PSTS, the signed bit is sign-extended and copied into the
corresponding guard-bit parts, A0G or A1G. The DC bit in DSR and other condition code bits are
not updated regardless of the instruction result. This instruction can operate as a conditional. This
instruction can operate with MOVX and MOVY in parallel.
Mnemonic
PLDS
PSTS
Local Data Move Instruction
Function
Data move from DSP register to MACL/MACH
Data move from MACL/MACH to DSP register
Figure 3.22 Local Data Move Instruction Flow
PSTS
M0
X0
Y0
A0
MACH
MACL
A0G
M1
X1
Y1
A1
Rev. 3.00 Jan. 18, 2008 Page 147 of 1458
Cannot be used
PLDS
A1G
DSR
Section 3 DSP Operating Unit
Operand
Dz
Dz
REJ09B0033-0300