2.6. Register summary

Table 2.7 shows the Cortex-A9 NEON MPE system registers. All NEON MPE system registers are 32-bit wide. Reserved register addresses are RAZ/WI.

Table 2.7. Cortex-A9 NEON MPE system registers

NameTypeReset Description
FPSIDRO 0x41033092See Floating-Point System ID Register
FPSCR RW0x00000000See Floating-Point Status and Control Register
MVFR1RO 0x01111111

See the ARM Architecture Reference Manual

MVFR0 RO 0x10110222

See the ARM Architecture Reference Manual

FPEXC RW 0x00000000See Floating-Point Exception Register

Table 2.8 shows the processor modes for accessing the Cortex-A9 NEON MPE system registers.

Table 2.8. Accessing Cortex-A9 NEON MPE system registers

Register Privileged access User access
 FPEXC EN=0FPEXC EN=1 FPEXC EN=0 FPEXC EN=1
FPSID Permitted Permitted Not permitted Not permitted
FPSCRNot permittedPermittedNot permittedPermitted
MVFR0, MVFR1 Permitted Permitted Not permittedNot permitted
FPEXCPermittedPermitted Not permitted Not permitted

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