HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 207

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

Table 3.30 Variation of Rounding Operation
• Overflow Protection
Mnemonic
PRND
The S bit in SR is effective for any rounding operations in the DSP unit. See section 3.5.11,
Overflow Protection, for details.
39
Guard
31
Function
Rounding
Source 1 or 2
Figure 3.21 Definition of Rounding Operation
39
Guard
Figure 3.20 Rounding Operation Flow
31
H'00 0002
H'00 0001
0
ALU
Source 1
Sx

Rounded result
H'00008000
0
0
Source 2

Sy
Rev. 3.00 Jan. 18, 2008 Page 145 of 1458
Analog value
DSR
Cleared to 0
True value
GT
Section 3 DSP Operating Unit
Z
N
V DC
Destination
Dz
Dz
REJ09B0033-0300