HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 166

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

Section 3 DSP Operation
Table 3.10 Variation of Rounding Operation
Overflow Protection: The S bit in SR is effective for any rounding operations in the DSP unit.
See section 3.1.8, Overflow Protection, for details.
Rev. 4.00 Sep. 14, 2005 Page 116 of 982
REJ09B0023-0400
Mnemonic
PRND
39
Guard
Function
Rounding
31
Figure 3.13 Definition of Rounding Operation
Figure 3.12 Rounding Operation Flow
Source 1 or 2
Destination
39
Guard
H'00 0002
H'00 0001
31
Rounded result
Source 1
Sx

Addition
0
ALU
0
H'00008000
0
Source 2

Sy
Analog value
GT
Z
True value
DSR
N
Cleared
V
DC
Destination
Dz
Dz