wm9712l Wolfson Microelectronics plc, wm9712l Datasheet - Page 69

• Manufacturer Part Number: wm9712l
• Description: Ac?97 Audio And Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
58h
5Ch
60h
62h
ADDR
ADDR
ADDR
Register 58h controls several additional functions.
Register 5Ch controls several additional functions.
Registers 60h and 62h control the ALC and Noise Gate functions.
REG
REG
REG
15:13
12
11
10
3:2
1
0
15
14
13:12
11
10:9
8
7
6:5
4
3
2
1:0
15:12
11:8
7:4
3:0
15:14
13:11
10:9
8
7
5
4:0
BIT
BIT
BIT
COMP2DEL
JIEN
FRC
SVD
DIE REV
WAKEEN
IRQ INV
AMUTE
C1REF
C1SRC
C2REF
C2SRC
DS
AMEN
VBIAS
ADCO
HPF
ENT
ASS
ALCL
HLD
DCY
ATK
ALCSEL
MAXGAIN
ZC TIMEOUT
ALCZC
NGAT
NGG
NGTH
LABEL
LABEL
LABEL
0
0 (AVDD/2)
00 (OFF)
0 (AVDD/2)
00 (OFF)
0
0 (OFF)
00
0
0
0
00
DEFAULT
000 (no delay)
0
0
0 (enabled)
Indicates device revision. 00=Rev.A, 01=Rev.B, 10=Rev.C
0 (no wake-up)
0 (not inverted)
1011 (-12dB)
0000 (0 ms)
0011 (192 ms)
0010 (24 ms)
00 (OFF)
111 (+30dB)
11 (slowest)
0 (OFF)
0 (OFF)
0 (hold gain)
00000 (-76.5dB)
DEFAULT
DEFAULT
Read-only bit to indicate DAC auto-muting
Selects Comparator 1 Reference Voltage
Selects Comparator 1 Signal Source
Selects Comparator 1 Reference Voltage
Selects Comparator 1 Signal Source
Selects differential microphone input pins. 0=MIC1
and MIC2, 1=LINEL and LINER
Enables DAC Auto-Mute
Selects analogue bias for lowest power, depending
on AVDD supply. 0X=3.3V, 10=2.5V, 11=1.8V
Selects source of SPDIF data. 0=from SDATAOUT,
1= from audio ADC
Disables ADC high-pass filter
Enables thermal sensor
Selects time slots for stereo ADC data. 00=slots 3
and 4, 01=7/8, 10=6/9, 11=10/11
Selects Comparator 2 delay
Enables Jack Insert Detection
Forces Jack Insert Detection
Disables VREF for lowest possible power
consumption
Enables GPIO wake-up
Inverts the IRQ signal (pin 45)
Controls ALC threshold
Controls ALC hold time
Controls ALC decay time
Controls which channel ALC operates on. 00=none,
01=right only, 10=left only, 11=both
Controls upper gain limit for ALC
Controls time-out for zero-cross detection
Enables zero-cross detection for ALC
Enables noise gate function
Selects noise gate type. 0=hold gain, 1=mute
Controls noise gate threshold
Controls ALC attack time
DESCRIPTION
DESCRIPTION
DESCRIPTION
Battery Alarm
Analogue Audio Outputs, Jack
Insertion and Auto-Switching
Power Management
N/A
GPIO and Interrupt Control
Audio DACs, Stereo DACs
Battery Alarm
Analogue Inputs,
Microphone Input
Power Management
Digital Audio (SPDIF)
Output
Audio ADC
Analogue Audio Outputs,
Thermal Sensor
Audio ADC, ADC Slot
Mapping
PD Rev 4.5 August 2006
REFER TO
REFER TO
WM9712L
Audio ADC,
Automatic
Level Control
REFER TO
69