TAS3002 datasheet(27/74 Pages) TI

номер детали	TAS3002

подробное описание детали	Digital Audio Processor With Codec

PDF	74 Pages

Scroll/Zoom	100%

производитель	TI [Texas Instruments]

домашняя страница	http://www.ti.com

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27 / 74 page

4–3

4.6

Bass Control

The bass gain level can be adjusted within the range of 15 dB to –15 dB with 0.5-dB step resolution. The level changes

are accomplished by downloading bass codes (shown in Table A–7) into the bass frequency control register.

Alternatively, a limited range of bass control is available by asserting the bass-up or bass-down GPI terminal (see

Section 7.6.1).

Bass control is a shelf filter with a corner frequency of 250 Hz at a 48-kHz sample rate.

The gain values for bass control can be found in Section A.5.

4.7

De-Emphasis Mode (DM)

De-emphasis is implemented in the DAC and is software controlled. De-emphasis is valid at 44.1 kHz and 48 kHz.

To enable de-emphasis, values are written into the analog control register via the I2C command. See Section 4.8 for

analog control register operation.

Figure 4–2 illustrates the frequency response of the de-emphasis mode.

Response (dB)

3.18

(50

µs)

10.6

(15

µs)

Frequency (kHz)

De-Emphasis

Figure 4–2. De-Emphasis Mode Frequency Response

TAS3002 датащи(PDF) 27 Page - Texas Instruments