Texas Instruments TMS320C28x, Reference Manual

Page: 40 / 695

CPU Registers
2-10
Table 2 − 3. Product Shift Modes
PM Value Product Shift Mode
000
2
Left shift by 1
001
2
No shift
010
2
Right shift by 1
011
2
Right shift by 2
100
2
Right shift by 3
101
2
Right shift by 4
(if AMODE = 1, left 4)
110
2
Right shift by 5
111
2
Right shift by 6
2.2.4 Data Page Pointer (DP)
In the direct addressing modes, data memory is addressed in blocks of 64
words called
data pages . The lower 4M words of data memory consists of
65 536 data pages labeled 0 through 65 535, as shown in Figure 2 − 6. In DP
direct addressing mode, the 16-bit data page pointer (DP) holds the current
data page number. You change the data page by loading the DP with a new
number. For information about the direct addressing modes, see section 5.4
on page 5-8.