TAS3002 datasheet(70/74 Pages) TI

70 / 74 page

A–10

A.7 Programming Instruction for the Loudness Contour

Device ID

Subaddress

B0(23–0)

B1(23–0)

B2(23–0)

A1(23–0)

A2(23–0)

For example:

Left Loudness Biquad

001A82

000000

FFE57E

E03550

0FCABB

Right Loudness Biquad

001A82

000000

FFE57E

E03550

0FCABB

Left Loudness Biquad Gain

Sub

G(23–0)

04C6D0

Right Loudness Biquad Gain

04C6D0

A.8 Examples of Dynamic Range Compression/Expansion (DRCE)

Table A–9. Example of a DRCE I2C Instruction With DRCE On

BYTE

NUMBER

INSTRUCTION

(HEX)

INSTRUCTION DEFINITION

TABLE

TAS3002 device identification

DRC subaddress

Above-threshold ratio of 5.33:1 with DRCE on

See Table A–11 and Table A–12

Below-threshold ratio of 1.33:1

See Table A–13 and Table A–14

Threshold of –30 dB

See Table A–15

Integration interval for energy level detection of 212 ms

See Table A–16

Attack time constant 6.7 ms

Decay time constant 106 ms

A.8.1

DRCE On/Off

The DRCE default mode in the TAS3002 device is off.

The DRCE turns on if all eight bytes in Table A–9 are transmitted and the LSB of the above-threshold ratio byte is

The DRCE turns off if all eight bytes in Table A–10 are transmitted and the LSB of the above-threshold ratio byte is

1. Table A–10 is identical to Table A–9 except for this third byte.

Table A–10. Example of a DRCE I2C Instruction With DRCE Off

BYTE

NUMBER

INSTRUCTION

(HEX)

INSTRUCTION DEFINITION

TABLE

TAS3002 device identification

DRC subaddress

Above threshold ratio of 5.33:1 with DRCE off

See Table A–11 and Table A–12

Below threshold ratio of 1.33:1

See Table A–13 and Table A–14

Threshold of –30 dB

See Table A–15

Integration interval for energy level detection of 212 ms

See Table A–16

Attack time constant 6.7 ms

Decay time constant 106 ms

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