2.2 Cpu Registers; Cpu Register Summary - Texas Instruments TMS320C28x Reference Manual

CPU Registers

2.2 CPU Registers

Table 2−1. CPU Register Summary
2-4
Table 2−1 lists the main CPU registers and their values after reset. Sections
2.2.1 through 2.2.10 describe the registers in more detail. Figure 2−2 shows
the registers.
Register Size
ACC 32 bits
AH 16 bits
AL 16 bits
XAR0 16 bits
XAR1 32 bits
XAR2 32 bits
XAR3 32 bits
XAR4 32 bits
XAR5 32 bits
XAR6 32 bits
XAR7 32 bits
AR0 16 bits
AR1 16 bits
AR2 16 bits
AR3 16 bits
AR4 16 bits
AR5 16 bits
AR6 16 bits
AR7 16 bits
Description
Accumulator
High half of ACC
Low half of ACC
Auxiliary register 0
Auxiliary register 1
Auxiliary register 2
Auxiliary register 3
Auxiliary register 4
Auxiliary register 5
Auxiliary register 6
Auxiliary register 7
Low half of XAR0
Low half of XAR1
Low half of XAR2
Low half of XAR3
Low half of XAR4
Low half of XAR5
Low half of XAR6
Low half of XAR7
Value After Reset
0x00000000
0x0000
0x0000
0x00000000
0x00000000
0x00000000
0x00000000
0x00000000
0x00000000
0x00000000
0x00000000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000