Daewoo DSL15M1TC, Service Manual

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9. WM8714
24-bit, 96kHz Stereo DAC
The WM8714 is a high performance stereo DAC designed for audio applications such as
DVD, home theatre systems, and digital TV. The WM8714 supports data input word lengths
from 16 to 24-bits and sampling rates up to 96kHz. The WM8714 consists of a serial interface
port, digital interpolation filters, multi-bit sigma delta modulators and stereo DAC in a 14-pin
SOIC package.
The WM8714 has a hardware control interface for selection of audio data interface format,
mute and de-emphasis. The WM8714 supports I
2
S, and right Justified audio data interfaces.
The WM8714 is an ideal device to interface to AC-3
TM
, DTS
TM
, and MPEG audio
decoders for surround sound applications, or for use in DVD players.
·
FEATURES
·
APPLICATIONS
·
Stereo DAC
·
DVD Players
· Audio Performance · Digital TV
- 95dB SNR (‘A’ weighted @ 48kHz) DAC
·
Digital Set Top
Boxes
- -90dB THD
·
DAC Sampling Frequency: 8kHz – 96kHz
·
Pin Selectable Audio Data Interface Format
- I
2
S, Right Justified or DSP
· 3-5V Supply Operation
·
14-pin SOIC Package
· Pin Compatible with WM8725
·
Pin Description
PIN NAME TYPE DESCRIPTION
1 LRCIN Digital input Sample rate clock input
2 DIN Digital input Serial audio data input
3 BCKIN Digital input Bit clock input
4 NC No connect No internal connection
5 CAP Analogue output Analogue internal reference
6 VOUTR Analogue output Right channel DAC output
7 GND Supply Negative supply
8 VDD Supply Positive supply
9 VOUTL Analogue output Left channel DAC output
10 MUTE Digital input Soft mute control, Internal pull down
High = Mute ON Low = Mute OFF
11 NC No connect No internal connection
12 DEEMPH Digital input De-emphasis select, Internal pull up
High = de-emphasis ON Low = de-emphasis OFF
13 FORMAT Digital input Data input format select, Internal pull up
Low = 16-bit right justified High = 16-24-bit I
2
S
14 MCLK Digital input System clock input