1 vic control register (vicctl) – Texas Instruments TMS320C64x DSP User Manual

Page 273

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VIC Port Registers

VCXO Interpolated Control Port

6-6

SPRU629

6.5.1

VIC Control Register (VICCTL)

The VIC control register (VICCTL) is shown in Figure 6–3 and described in
Table 6–4.

Figure 6–3. VIC Control Register (VICCTL)

31

16

Reserved

R-0

15

4 3

1

0

Reserved

PRECISION

GO

R-0

R/W-0

R/W-0

Legend: R = Read only; R/W = Read/Write; -n = value after reset

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

Bit

field

symval

Value

Description

31–4

Reserved

0

Reserved. The reserved bit location is always read as 0. A
value written to this field has no effect.

3–1

PRECISION

0–7h

Precision bits determine the resolution of the interpolation. The
PRECISION bits can only be written when the GO bit is cleared
to 0. If the GO bit is set to 1, a write to the PRECISION bits
does not change the bits.

16BITS

0

16 bits

15BITS

1

15 bits

14BITS

2h

14 bits

13BITS

3h

13 bits

12BITS

4h

12 bits

11BITS

5h

11 bits

10BITS

6h

10 bits

9BITS

7h

9 bits

† For CSL implementation, use the notation VIC_VICCTL_field_symval

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