UPC1857ACT datasheet(21/44 Pages) NEC

Numer części	UPC1857ACT

Szczegółowy opis	SOUND CONTROL IC WITH SURROUND AND I2C BUS

PDF	44 Pages

Scroll/Zoom	100%

Producent	NEC [NEC]

Strona internetowa	http://www.nec.com/

Logo

21 / 44 page

µµµµPC1857A

4.4

Explanation of Each Command

4.4.1 Mute

The mute function can be turned ON/OFF by using data of bit D7 of subaddress 00H.

Figure 4-1. Mute

Subaddress

00H

Mute

Output selection

Mute: OFF

Mute: ON

Output mute

Surround mode

Surround effect

Caution When changing the surround mode, and when turning ON/OFF power, use the mute function

(approx. 200 ms) for pop noise reduction.

4.4.2 Output selection

Output can be selected by using data of bits D5 and D4 of subaddress 00H.

Figure 4-2. Output Selection

Subaddress

00H

Mute

Output selection

Output

Data

Output selection

Surround mode

Surround effect

Lout

L + R

Rout

L + R

Caution The surround mode is OFF (D3, D2 = 11) in modes other than the stereo mode (D5, D4 = 00).

UPC1857ACT Arkusz danych(PDF) 21 Page - NEC