Audio Codec. WM9714L Datasheet

WM9714L Codec. Datasheet pdf. Equivalent

Part WM9714L
Description Audio Codec
Feature WM9714L AC’97 Audio Codec DESCRIPTION FEATURES The WM9714L is a highly integrated input/output d.
Manufacture Cirrus Logic
Datasheet
Download WM9714L Datasheet



WM9714L
WM9714L
AC’97 Audio Codec
DESCRIPTION
FEATURES
The WM9714L is a highly integrated input/output device
designed for mobile computing and communications.
The chip is architected for dual CODEC operation, supporting hi-
fi stereo CODEC functions via the AC link interface, and
additionally supporting voice CODEC functions via a PCM type
Synchronous Serial Port (SSP). A third, auxiliary DAC is
provided which may be used to support generation of
supervisory tones, or ring-tones at different sample rates to the
main CODEC.
The device can connect directly to mono or stereo microphones,
stereo headphones and a stereo speaker, reducing total
component count in the system. Cap-less connections to the
headphones, speakers, and earpiece may be used, saving cost
and board area. Additionally, multiple analogue input and output
pins are provided for seamless integration with analogue
connected wireless communication devices.
All device functions are accessed and controlled through a
single AC-Link interface compliant with the AC’97 standard. The
24.576 MHz master clock can be input directly or generated
internally from a 13MHz (or other frequency) clock by an on-chip
PLL. The PLL supports a wide range of input clock from
2.048MHz to 78.6MHz.
AC’97 Rev 2.2 compatible stereo CODEC
- DAC SNR 94dB, THD 85dB
- ADC SNR 87dB, THD 86dB
- Variable Rate Audio, supports all WinCE sample rates
- Tone Control, Bass Boost and 3D Enhancement
On-chip 45mW headphone driver
On-chip 400mW mono or stereo speaker drivers
Stereo, mono or differential microphone input
- Automatic Level Control (ALC)
- Mic insert and mic button press detection
Auxiliary mono DAC (ring tone or DC level generation)
Seamless interface to wireless chipset
Additional PCM/I2S interface to support voice CODEC
PLL derived audio clocks.
Supports input clock ranging from 2.048MHz to 78.6MHz
1.8V to 3.6V supplies (digital down to 1.62V, speaker up to
4.2V)
7x7mm 48-lead QFN package
APPLICATIONS
Smartphones
Personal Digital Assistants (PDA)
Handheld and Tablet Computers
The WM9714L operates at supply voltages from 1.8V to 3.6V.
Each section of the chip can be powered down under software
control to save power. The device is available in a small
leadless 7x7mm QFN package, ideal for use in hand-held
portable systems.
BLOCK DIAGRAM
MICBIAS
MIC1
MICCM
MIC2A/COMP1/AUX1
MIC2B/COMP2/AUX2
LINEL
LINER
MONOIN
PCBEEP
AUX4/GPIO8/
(SPDIF)
AGND2
AVDD
AGND3 AGND CAP2 AVDD2 VREF
DGND1
50K 50K
VREF
DGND2
DCVDD DBVDD
WM9714L
SPKGND SPKVDD HPGND HPVDD
AVDD
DCVDD
POR
RESETB
(pin 11)
rb
DIFFERENTIAL
STEREO or
MONO MICS
-
INPUT PGAs
RECORD
SELECT
RECORD
VOLUME
ADC
L
ADC
R
ALC /
NOISE
GATE
TONE /
BASS
BOOST
3D
SPKVDD / 3
AUX
ADCSEL ADC
DEAD
BAT
-
+
VREF /
AUX4
+
-
LOW
BAT
INTERRUPT
LOGIC
PCM/I2S
INTERFACE
AC'97
PLL INTERFACE
DAC
L
DAC
R
AUX
DAC
VOICE
DAC
HEADPHONE
MIXER
SPEAKER
MIXER
MONO
MIXER
MONO
HPL
HPR
SPKL
SPKR
OUT3
OUT4
Ear Speaker
32R
HP
16/32R
Hands-free
32R
Stereo
Speaker (R)
8R
Stereo
Speaker (L)
8R
http://www.cirrus.com
Copyright Cirrus Logic, Inc., 20102016
(All Rights Reserved)
Rev 4.0
DEC ‘16



WM9714L
WM9714L
TABLE OF CONTENTS
DESCRIPTION................................................................................................................ 1
FEATURES ..................................................................................................................... 1
APPLICATIONS.............................................................................................................. 1
BLOCK DIAGRAM ......................................................................................................... 1
TABLE OF CONTENTS.................................................................................................. 2
PIN CONFIGURATION ................................................................................................... 4
ORDERING INFORMATION........................................................................................... 4
PIN DESCRIPTION......................................................................................................... 4
ABSOLUTE MAXIMUM RATINGS ................................................................................. 6
RECOMMENDED OPERATING CONDITIONS.............................................................. 6
ELECTRICAL CHARACTERISTICS .............................................................................. 7
AUDIO OUTPUTS ......................................................................................................................7
AUDIO INPUTS ..........................................................................................................................8
AUXILIARY MONO DAC (AUXDAC)..........................................................................................8
PCM VOICE DAC (VXDAC) .......................................................................................................8
AUXILIARY ADC ........................................................................................................................9
COMPARATORS .......................................................................................................................9
REFERENCE VOLTAGES .........................................................................................................9
DIGITAL INTERFACE CHARACTERISTICS ...........................................................................10
POWER CONSUMPTION............................................................................................. 10
SIGNAL TIMING REQUIREMENTS ............................................................................. 11
AC97 INTERFACE TIMING......................................................................................................11
PCM AUDIO INTERFACE TIMING SLAVE MODE ...............................................................15
PCM AUDIO INTERFACE TIMING MASTER MODE............................................................16
DEVICE DESCRIPTION ............................................................................................... 17
INTRODUCTION ......................................................................................................................17
AUDIO PATHS OVERVIEW.....................................................................................................18
CLOCK GENERATION ............................................................................................................19
CLOCK DIVISION MODES ......................................................................................................19
PLL MODE ...............................................................................................................................21
DIGITAL INTERFACES............................................................................................................24
AC97 INTERFACE ...................................................................................................................25
PCM INTERFACE ....................................................................................................................25
AUDIO ADCS ............................................................................................................... 31
STEREO ADC ..........................................................................................................................31
RECORD SELECTOR..............................................................................................................32
RECORD GAIN ........................................................................................................................33
AUTOMATIC LEVEL CONTROL..............................................................................................34
AUDIO DACS ............................................................................................................... 38
STEREO DAC ..........................................................................................................................38
VOICE DAC..............................................................................................................................40
AUXILIARY DAC ......................................................................................................................41
VARIABLE RATE AUDIO / SAMPLE RATE CONVERSION ....................................... 43
AUDIO INPUTS............................................................................................................. 44
LINE INPUT..............................................................................................................................44
MICROPHONE INPUT .............................................................................................................44
MONOIN INPUT .......................................................................................................................49
PCBEEP INPUT .......................................................................................................................50
DIFFERENTIAL MONO INPUT ................................................................................................51
2 Rev 4.0





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