DAC39RF10 datasheet(180/232 Pages) TI2

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Table 8-80. FREQ[2] Register Field Descriptions

Bit

Field

Type

Reset

Description

63-0

FREQ[2]

R/W

0000

0000h

The NCO frequency (FNCO) is:

FNCO = FREQ[2] * 2-64 * FCLK

where FCLK is the sample frequency of the DAC. FREQ[2] is the

integer value of this register. This register can be interpreted as

signed or unsigned (both interpretations are valid).

Use this equation to determine the value to program:

FREQ[2] = 264 * FNCO /FCLK

Note: Changes to this register do not take effect until the next sync

event specified by NCO_SYNC_SRC.

Note: This register should only be changed when DP_EN=0 or

updates to the NCOs are scheduled to occur away from the change.

(See NCO_SYNC.)

Note: This register has no effect when FR_EN=1.

8.75 FREQ[3] Register (Offset = 0338h) [reset = 0000000000000000h]

FREQ[3] is described in Table 8-81.

Return to the Register Summary Table.

FREQ for NCO3 Accumulator.

Table 8-81. FREQ[3] Register Field Descriptions

Bit

Field

Type

Reset

Description

63-0

FREQ[3]

R/W

0000

0000h

The NCO frequency (FNCO) is:

FNCO = FREQ[3] * 2-64 * FCLK

where FCLK is the sample frequency of the DAC. FREQ[3] is the

integer value of this register. This register can be interpreted as

signed or unsigned (both interpretations are valid).

Use this equation to determine the value to program:

FREQ[3] = 264 * FNCO /FCLK

Note: Changes to this register do not take effect until the next sync

event specified by NCO_SYNC_SRC.

Note: This register should only be changed when DP_EN=0 or

updates to the NCOs are scheduled to occur away from the change.

(See NCO_SYNC.)

Note: This register has no effect when FR_EN=1.

8.76 PHASE0 Register (Offset = 0340h) [reset = 0000h]

PHASE0 is described in Table 8-82.

Return to the Register Summary Table.

Phase for NCO0 Accumulator.

DAC39RF10-SP, DAC39RF10-SEP

DAC39RFS10-SP, DAC39RFS10-SEP

SBAS932A – MARCH 2024 – REVISED FEBRUARY 2026

www.ti.com

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Product Folder Links: DAC39RF10-SP DAC39RF10-SEP DAC39RFS10-SP DAC39RFS10-SEP

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