Daewoo DSL19M1WC, Service Manual

Page: 52 / 78

51
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
ICS ON HI-VOLTAGE BOARD
1. BIT3193
High Performance PWM Controller
BIT3193 integrated circuit provides the essential features for general purpose PWM controller in a small low cost
16-pin package. BIT3193 has built-in a low frequency PWM generator for any specified application. BIT3193 includes
latched off protection feature may make the system more reliable while compare to other similar products.
·
Features
·
4.5V
～
8V operation
·
Fixed High Frequency, Voltage Mode PWM Control
·
Latched Off Protection
·
Build-In Low Frequency PWM Generator
·
Build-in UVLO