HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 150

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 3 DSP Operation
Table 3.1
Table 3.2
As shown in figure 3.2, data loaded from the memory at the MA stage, which is programmed at
the same line as the ALU operation, is not used as a source operand for this operation, even
though the destination operand of the data load operation is identical to the source operand of the
ALU operation. In this case, previous operation results are used as the source operands for the
ALU operation, and then updated as the destination operand of the data load operation.
Rev. 4.00 Sep. 14, 2005 Page 100 of 982
REJ09B0023-0400
Mnemonic
PADD
PSUB
PADDC
PSUBC
PCMP
PCOPY
PABS
PNEG
PCLR
Register
A0
A1
M0
M1
X0
X1
Y0
Y1
Variation of ALU Fixed-Point Operations
Correspondence between Operands and Registers
Sx
Yes
Yes
—
—
Yes
Yes
—
—
Function
Addition
Subtraction
Addition with carry
Subtraction with borrow
Comparison
Data copy
Absolute
Negation
Clear
Sy
Yes
Yes
Yes
Yes
—
—
—
—
Source 1
Sx
Sx
Sx
Sx
Sx
Sx
All 0
Sx
All 0
Sx
All 0
All 0
Dz
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Source 2
Sy
Sy
Sy
Sy
All 0
Sy
All 0
Sy
All 0
Sy
All 0
Sy
Du
Yes
Yes
—
—
Yes
—
Yes
—
Destination
Dz (Du)
Dz (Du)
Dz
Dz
—
Dz
Dz
Dz
Dz
Dz
Dz
Dz