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TLV320ADC3001

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SLAS548C –OCTOBER 2008– REVISED APRIL 2011

Control Registers, Page 4: ADC Digital Filter Coefficients

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Page 4 / Register 0: Page Control Register

(1)

READ/ RESET

BIT DESCRIPTION

WRITE VALUE

D7–D0 R/W 0000 0000 0000 0000: Page 0 selected

0000 0001: Page 1 selected

...

1111 1110: Page 254 selected (reserved)

1111 1111: Page 255 selected (reserved)

(1) Valid pages are 0, 1, 4, 5, 32–47. All other pages are reserved (do not access).

The remaining page-4 registers are either reserved registers or are used for setting coefficients for the various

filters in the processing blocks. Reserved registers should not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit

coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are

interpreted as a 2s-complement integer, with possible values ranging from –32,768 to 32,767. When

programming any coefficient value for a filter, the MSB register should always be written first, immediately

followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers

should be written in this sequence. Table 14 is a list of the page-4 registers, excepting the previously described

Table 14. Page-4 Registers

RESET VALUE REGISTER NAME

NUMBER

1 XXXX XXXX Reserved. Do not write to this register.

Coefficient N0(15:8) for AGC LPF (first-order IIR) used as averager to detect level or coefficient

2 0000 0001

C1(15:8) of ADC miniDSP

Coefficient N0(7:0) for AGC LPF (first-order IIR) used as averager to detect level or coefficient

3 0001 0111

C1(7:0) of ADC miniDSP

Coefficient N1(15:8) for AGC LPF (first-order IIR) used as averager to detect level or coefficient

4 0000 0001

C2(15:8) of ADC miniDSP

Coefficient N1(7:0) for AGC LPF (first-order IIR) used as averager to detect level or coefficient

5 0001 0111

C2(7:0) of ADC miniDSP

Coefficient D1(15:8) for AGC LPF (first-order IIR) used as averager to detect level or coefficient

6 0111 1101

C3(15:8) of ADC miniDSP

Coefficient D1(7:0) for AGC LPF (first-order IIR) used as averager to detect level or coefficient

7 1101 0011

C3(7:0) of ADC miniDSP

Coefficient N0(15:8) for left ADC programmable first-order IIR or coefficient C4(15:8) of ADC

8 0111 1111

miniDSP

9 1111 1111 Coefficient N0(7:0) for left ADC programmable first-order IIR or coefficient C4(7:0) of ADC miniDSP

Coefficient N1(15:8) for left ADC programmable first-order IIR or coefficient C5(15:8) of ADC

10 0000 0000

miniDSP

11 0000 0000 Coefficient N1(7:0) for left ADC programmable first-order IIR or coefficient C5(7:0) of ADC miniDSP

Coefficient D1(15:8) for left ADC programmable first-order IIR or coefficient C6(15:8) of ADC

12 0000 0000

miniDSP

13 0000 0000 Coefficient D1(7:0) for left ADC programmable first-order IIR or coefficient C6(7:0) of ADC miniDSP

Coefficient N0(15:8) for left ADC biquad A or coefficient FIR0(15:8) for ADC FIR filter or coefficient

14 0111 1111

C7(15:8) of ADC miniDSP

Coefficient N0(7:0) for left ADC biquad A or coefficient FIR0(7:0) for ADC FIR filter or coefficient

15 1111 1111

C7(7:0) of ADC miniDSP

Coefficient N1(15:8) for left ADC biquad A or coefficient FIR1(15:8) for ADC FIR filter or coefficient

16 0000 0000

C8(15:8) of ADC miniDSP

Coefficient N1(7:0) for left ADC biquad A or coefficient FIR1(7:0) for ADC FIR filter or coefficient

17 0000 0000

C8(7:0) of ADC miniDSP