WM8753LEBSLASHV datasheet(25/87 Pages) WOLFSON

部件名	WM8753LEB/V

功能描述	HI FI AND TELEPHONY DUAL CODEC

PDF	87 Pages

Scroll/Zoom	100%

制造商	WOLFSON [Wolfson Microelectronics plc]

网页	http://www.wolfsonmicro.com

标志

25 / 87 page

WM8753L

Advanced Information

AI Rev 3.1 June 2004

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

[8:7]

MIC2BOOST[1:0]

MIC2 Preamp Gain Control

00 : +12dB

01 : +18dB

10 : +24dB

11 : +30dB

R47 (2Fh)

Mic Input Boost

[6:5]

MIC1BOOST[1:0]

MIC1 Preamp Gain Control

00 = +12dB

01 = +18dB

10 = +24dB

11 = +30dB

Table 10 MIC Preamp Gain Control

The suggested configuration for the external microphone circuit is shown in Figure 7.

Figure 7 Suggested External Microphone Input Configuration

DIFFERENTIAL OPERATION

It is possible to connect up to two mics differentially. Microphone1 is connected between the MIC1

and MIC1N inputs and microphone2 is connected between the MIC2 and MIC2N inputs. It should be

noted that in differential mode, with mic inputs routed to the ADCs, an extra invert occurs in the MIC1

(left ADC) path due to the extra mixer. This can be compensated for by inverting the left ADC signal

back again using ADCPOL.

WM8753LEB/V 数据表(PDF) 25 Page - Wolfson Microelectronics plc