Texas-instruments TMS320C64x DSP Instrukcja Użytkownika Pobierz pdf (Strona 274)

VIC Port Registers

6-7VCXO Interpolated Control PortSPRU629

Table 6–4. VIC Control Register (VICCTL) Field Descriptions (Continued)

Bit DescriptionValuesymval

†

field

†

0 GO The GO bit can be written to at any time.

0 0 The VICDIV and VICCTL registers can be written to without

affecting the operation of the VIC port. All the logic in the VIC

port is held in reset state and a 0 is output on the VCTL output

line. A write to VICCTL bits as well as setting GO to 1 is allowed

in a single write operation. The VICCTL bits change and the GO

bit is set, disallowing any further changes to the VICCTL and

VICDIV registers.

1 1 The VICDIV and VICCTL (except for the GO bit) registers

cannot be written. If a write is performed to the VICDIV or

VICCTL registers when the GO bit is set, the values of these

registers remain unchanged. If a write is performed that clears

the GO bit to 0 and changes the values of other VICCTL bits, it

results in GO = 0 while keeping the rest of the VICCTL bits

unchanged. The VIC port is in its normal working mode in this

state.

†

For CSL implementation, use the notation VIC_VICCTL_field_symval

1 2 ... 269 270 271 272 273 274 275 276 277 278 279 ... 305 306

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Texas-instruments TMS320C64x DSP Instrukcja Użytkownika Strona 274