wm8952 Wolfson Microelectronics plc, wm8952 Datasheet - Page 56

• Manufacturer Part Number: wm8952
• Description: Mono Adc With Microphone Pre-amplifier
• Manufacturer: Wolfson Microelectronics plc

WM8952
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REGISTER BITS BY ADDRESS
Notes:
1. Default values of N/A indicate non-latched data bits (e.g. software reset or volume update bits).
2. Register bits marked as "Reserved" should not be changed from the default.
0 (00h)
1 (01h)
2 (02h)
3 (03h)
4 (04h)
REGISTER
ADDRESS
[15:0] RESET /
15:8
7
6
5
4
3
2:0
2
1:0
15:5
4
3
2
1
0
15:0
15:9
8
7
BIT
CHIP_ID
LVLSHIFT_EN
AUXEN
PLLEN
MICBEN
BIASEN
DEVICE_REVI
SION
BUFIOEN
VMIDSEL
BOOSTEN
INPPGAEN
ADCEN
BCP
FRAMEP
LABEL
0
0
0
0
000
0
0
0
N/A
000h
0
00
000h
0
0
0
0
00h
0000000
0
DEFAULT
Writing to this register will apply a software reset.
Reading from this register will return the device id
Reserved
Enable bit for the level shifters. 1 for normal operation,
0 for standby.
Auxilliary input buffer enable
0 = OFF
1 = ON
PLL enable
0=PLL off
1=PLL on
Microphone Bias Enable
0 = OFF (high impedance output)
1 = ON
Analogue amplifier bias control
0=Disabled
1=Enabled
Readback from this register will return the device
revision in this position
Enable bit for the VMID buffer. The VMID buffer is
used to maintain a buffered VMID voltage on all
analogue input pins. 1. for normal operation 0. for
standby (where inputs settle to GND).
Reference string impedance to VMID pin:
00=off (open circuit)
01=50kΩ
10=250kΩ
11=5kΩ
Reserved
Input BOOST enable
0 = Boost stage OFF
1 = Boost stage ON
Reserved
Input microphone PGA enable
0 = disabled
1 = enabled
Reserved
ADC Enable Control
0 = ADC disabled
1 = ADC enabled
Reserved
Reserved
BCLK polarity
0=normal
1=inverted
Frame clock polarity
0=normal
1=inverted
DESCRIPTION
PP, Rev 3.0, December 2008
Resetting the
Chip /
Control Interface
Power
Management
Auxiliary Inputs
Master Clock and
Phase Locked
Loop (PLL)
Microphone
Biasing Circuit
Power
Management
Control Interface
Enabling the
Outputs
Power
Management
Input Boost
Input Signal Path
Analogue to
Digital Converter
(ADC)
Digital Audio
Interfaces
Digital Audio
Interfaces
REFER TO
Pre Production
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