Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Custom audio Digital audio interfacing I²C TSSOP 38

1−21

Subaddress—Bass and Treble Shelf Filter Parameters

S Slave Addr Ack Subaddr Ack Ack Ack00000xxx00000000

0xF5

CH3

Ack00000xxx

CH2

Ack00000xxx

CH1

S Slave Addr Ack Subaddr Ack Ack Ack00000xxx00000000

0xF7

CH3

Ack00000xxx

CH2

Ack00000xxx

CH1

S Slave Addr Ack Subaddr Ack Ack Ackxxxxxxxx00000000

0xF6

Ackxxxxxxxx Ackxxxxxxxx

S Slave Addr Ack Subaddr Ack Ack Ackxxxxxxxx00000000

0xF8

Ackxxxxxxxx Ackxxxxxxxx

CH1

Treble Shelf Selection (Filter Index)

CH2

CH3

CH1CH2CH3

Bass Shelf Selection (Filter Index)

Treble Filter Set Selection

Bass Filter Set Selection

BASS

FILTER 5

BASS

FILTER 4

BASS

FILTER 3

BASS

FILTER 2

BASS

FILTER 1

TREBLE

FILTER 5

TREBLE

FILTER 3

TREBLE

FILTER 1

TREBLE

FILTER 4

TREBLE

FILTER 2

MID-BAND

MAX BOOST

SHELF

MAX CUT

SHELF

Treble and Bass Filter Set Commands

0 => No Change

1 − 5 => Filter Sets 1 − 5

6 − 7 => Illegal (Behavior Indeterminate)

Treble and Bass Filter Shelf Commands

0 => Illegal (Behavior Indeterminate)

1 − 150 => Filter Shelves 1 − 150

1 => +18-dB Boost

150 => −18-dB Cut

151 − 255 => Illegal (Behavior Indeterminate)

FREQUENCY

S Slave Addr Ack Subaddr Ack Ack Ack0000000000000000

0xF1

Ack0000000 Ackxxxxxxxx

Treble/Bass Slew Rate = TBLC

(Slew Rate = TBLC/Fs,

Where Fs = Audio Sample Rate)

Treble/Bass Slew Rate Selection

3-dB CORNERS (kHz)

(LRCLK)

FILTER SET 5 FILTER SET 4 FILTER SET 3 FILTER SET 2 FILTER SET 1

(LRCLK)

BASS TREBLE BASS TREBLE BASS TREBLE BASS TREBLE BASS TREBLE

96 kHz 0.25 6 0.5 12 0.75 18 1 24 1.5 36

88.4 kHz 0.23 5.525 0.46 11.05 0.691 16.575 0.921 22.1 1.381 33.15

64 kHz 0.167 4 0.333 8 0.5 12 0.667 16 1 24

48 kHz 0.125 3 0.25 6 0.375 9 0.5 12 0.75 18

44.1 kHz 0.115 2.756 0.23 5.513 0.345 8.269 0.459 11.025 0.689 16.538

32 kHz 0.083 2 0.167 4 0.25 6 0.333 8 0.5 12

24 kHz 0.063 1.5 0.125 3 0.188 4.5 0.25 6 0.375 9

22.05 kHz 0.057 1.378 0.115 2.756 0.172 4.134 0.23 5.513 0.345 8.269

16 kHz 0.042 1 0.083 2 0.125 3 0.167 4 0.25 6

12 kHz 0.031 0.75 0.063 1.5 0.094 2.25 0.125 3 0.188 4.5

11.025 kHz 0.029 0.689 0.057 1.378 0.086 2.067 0.115 2.756 0.172 4.134