PCM5142 datasheet(35/123 Pages) TI2

35 / 123 page

DIN

(1)

6 BQ

(2)

6 BQ

Lch

Rch

(3)

2 BQ

(5)

2 BQ

(7)

2 BQ

(8)

2 BQ

(6)

2 BQ

(4)

2 BQ

3 Band

DRC

Mono

Mixer

Stereo

Mux

Stereo

Mixer

Coeff-1

Coeff-2

Master

Volume

2ch

Interpolation

Filter

1ch I2S out

PCM5141, PCM5142

www.ti.com

SLAS759B – AUGUST 2012 – REVISED JANUARY 2016

8.3.4.3 Fixed Audio Processing Flow (Program 5)

The PCM514x implements signal processing capabilities and interpolation filtering via processing blocks. These

fixed processing blocks give users the choice of how much and what type of signal processing they may use and

which interpolation filter is applied.

The signal processing blocks available are:

•

Biquad filters

•

Multiband DRC

•

Mono mixer

•

Stereo mixer

•

Master volume

The addresses of the coefficients are fixed when selecting the fixed processing flow, however, if these

components are used in the RAM source mode (Program 31) the registers for coefficients will change. Users can

find more details in Purepath Studio.

NOTE

This process flow requires 1024 instruction cycles. Therefore, it will only function at

sampling frequencies up to 48 kHz.

8.3.4.3.1

Processing Blocks – Detailed Descriptions

Figure 57 shows the fixed processing flow.

Figure 57. Preset Process Flow

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PCM5142 Datasheet(PDF) 35 Page - Texas Instruments

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