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Section 3 DSP Operation
Rev. 4.00 Sep. 14, 2005 Page 140 of 982
REJ09B0023-0400
31
15
1
0
R4 [Ax]
R5 [Ax]
ABx
XAB 16-bit
X_MEM
X R/W
Y_MEM
Y R/W
YAB 16-bit
XDB
YDB
16-bit
16-bit
X data
memory
4 kbytes
31
15
1
0
R6 [Ay]
R7 [Ay]
ABy
Y data
memory
4 kbytes
X_MEM and Y_MEM:
Select X and Y data memory
Instruction code for X
data-transfer operation
Instruction code for Y
data-transfer operation
Control
for X memory
Control
for Y memory
Input/output
control for
DSP data
registers
X0/X1, A0/A1
Input/output
control for
DSP data
registers
Y0/Y1, A0/A1
Figure 3.22 Load/Store Control for X and Y Data-Transfer Instructions
Control for X Memory:
if ( !Nop ) {
X_MEM=1; XAB=ABx;
if ( load operation ) {
Dx[31:16]=XDB;
Dx[15:0]=0x0000;
/
*
Dx is X0 or X1
*
/
}
else XDB = Dx[31:16];
/
*
Dx is A0 or A1
*
/
}
else { X_MEM=0; XAB=0x000; }
The conditional execution based on the DC flag in DSR cannot control any MOVX/MOVY
instructions.
Summary of Contents for HD6417641
Page 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Page 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Page 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Page 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Page 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Page 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Page 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Page 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Page 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Page 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Page 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Page 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Page 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Page 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Page 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Page 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Page 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Page 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Page 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
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