Renesas SH7641 - Manual (Page 164)

Section 3 DSP Operation
Rev. 4.00 Sep. 14, 2005 Page 114 of 982
REJ09B0023-0400
Table 3.8 Operation Definition of PDMSB
Source Data Result for DST
Guard Bit Upper Word Lower Word
Guard
Bit Upper Word
7g 6g … 1g 0g 31 30 29 28 … 3 2 1 0 7g to 0g 31 to 22 21 20 19 18 17 16 Decimal
0 0 … 0 0 0 0 0 0 … 0 0 0 0 All 0 All 0 0 1 1 1 1 1 +31
0 0 … 0 0 0 0 0 0 … 0 0 0 1 All 0 All 0 0 1 1 1 1 0 +30
0 0 … 0 0 0 0 0 0 … 0 0 1 * All 0 All 0 0 1 1 1 0 1 +29
0 0 … 0 0 0 0 0 0 … 0 1 * * All 0 All 0 0 1 1 1 0 0 +28
: : :
0 0 … 0 0 0 0 0 1 … * * * * All 0 All 0 0 0 0 0 1 0 +2
0 0 … 0 0 0 0 1 * … * * * * All 0 All 0 0 0 0 0 0 1 +1
0 0 … 0 0 0 1 * * … * * * * All 0 All 0 0 0 0 0 0 0 0
0 0 … 0 0 1 * * * … * * * * All 1 All 1 1 1 1 1 1 1 –1
0 0 … 0 1 * * * * … * * * * All 1 All 1 1 1 1 1 1 0 –2
: : :
0 1 … * * * * * * … * * * * All 1 All 1 1 1 1 0 0 0 –8
1 0 … * * * * * * … * * * * All 1 All 1 1 1 1 0 0 0 –8
:
1 1 … 1 0 * * * * … * * * * All 1 All 1 1 1 1 1 1 0 –2
1 1 … 1 1 0 * * * … * * * * All 1 All 1 1 1 1 1 1 1 –1
1 1 … 1 1 1 0 * * … * * * * All 0 All 0 0 0 0 0 0 0 0
1 1 … 1 1 1 1 0 * … * * * * All 0 All 0 0 0 0 0 0 1 +1
1 1 … 1 1 1 1 1 0 … * * * * All 0 All 0 0 0 0 0 1 0 +2
: : :
1 1 … 1 1 1 1 1 1 … 1 0 * * All 0 All 0 0 1 1 1 0 0 +28
1 1 … 1 1 1 1 1 1 … 1 1 0 * All 0 All 0 0 1 1 1 0 1 +29
1 1 … 1 1 1 1 1 1 … 1 1 1 0 All 0 All 0 0 1 1 1 1 0 +30
1 1 … 1 1 1 1 1 1 … 1 1 1 1 All 0 All 0 0 1 1 1 1 1 +31
Note: * means Don't care.