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Section 3 DSP Operation
Rev. 4.00 Sep. 14, 2005 Page 119 of 982
REJ09B0023-0400
X pointer (R4, R5)
0, +2, +R8
XAB [15:1]
YAB [15:1]
XDB [15:0]
YDB [15:0]
0, +2, +R9
Y pointer (R6, R7)
X memory
(RAM, ROM)
Y memory
(RAM, ROM)
Not affected for store and cleared for load
Cannot be specitied
X0
X1
Y0
Y1
M0
M1
A0G
A1G
DSR
A0
A1
Figure 3.14 Data Transfer Operation Flow
Type 2 instructions execute just two data transfer operations. The 16-bit instruction code is used
for this type of instructions. Basically, operation and operand flexibility are the same as in type 1
but conditional operation is not supported. This type of data transfer operation can access X or Y
memory only. Any other memory space cannot be accessed.
Type 3 instructions execute single data transfer operations only. The 16-bit instruction code is
used for this type of instructions. X pointers and other two extra pointers are available for this type
of operation, but Y pointers are not available. This type of operation can access any memory
address space, and all registers in the DSP unit, except for DSR, can be specified for both source
and destination operands. The guard-bit registers, A0G and A1G, can also be specified as
independent registers.
This type of operation can treat both single-word data and longword data. When a word-data
transfer operation is executed, the upper word of the register operand is activated. In case of word
data load, the data is loaded into the upper word of the destination register, the lower side of the
destination register is automatically cleared, and the signed bit is copied into the guard-bit parts, if
supported. In case of longword data load, the data is loaded into the upper word and lower word of
the destination register and the signed bit is sign-extended and copied into the guard-bit parts, if
supported. In case of the guard register store, the signed bit is sign-extended and copied on the
upper 24 bits of LDB. Figures 3.15 and 3.16 show this type of data transfer operation flows.
Содержание HD6417641
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Страница 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
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Страница 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Страница 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Страница 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Страница 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Страница 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Страница 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Страница 500: ...Section 13 Direct Memory Access Controller DMAC Rev 4 00 Sep 14 2005 Page 450 of 982 REJ09B0023 0400...
Страница 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Страница 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Страница 734: ...Section 18 Multi Function Timer Pulse Unit MTU Rev 4 00 Sep 14 2005 Page 684 of 982 REJ09B0023 0400...
Страница 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Страница 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Страница 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Страница 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Страница 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Страница 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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