wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 223
wm8351
Manufacturer Part Number
wm8351
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8351.pdf
(328 pages)
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Production Data
Register 06h Interface Control
REGISTER
Register 08h Power mgmt (1)
w
REGISTER
Power mgmt
ADDRESS
ADDRESS
R8 (08h)
(1)
15:14
BIT
BIT
1:0
13
10
8
5
4
2
1
OUTPUT_DRAIN_ENA
CODEC_ISEL[1:0]
MIC_DET_ENA
SPI_3WIRE
VBUF_ENA
MICB_ENA
VMID_ENA
LABEL
BIAS_ENA
VMID[1:0]
LABEL
DEFAULT
DEFAULT
0
10
00
0
0
0
0
0
0
Note: SPI_3WIRE must be set for this to take
effect.
Protected by security key. Default held in metal
mask.
Selects 2- or 3-/4-wire mode.
0 = 2-wire mode
1 = 3/4 wire mode
Protected by security key. Default held in metal
mask.
CODEC Analogue current level select
00 = x 1.5
01 = x 1.0
10 = x 0.75
11 = x 0.5
Forces ON the tie-off amplifiers
0 = disabled
1 = enabled
Enables a drain on the outputs allowing the
amplifiers to shutdown more quickly.
0 = Shutdown as normal
1 = Sink current from an external capacitor,
allowing faster shutdown.
Enable MIC detect:
0 = disabled
1 = enabled
Enables bias to analogue audio CODEC
circuitry
0 = disabled
1 = enabled
Microphone bias enable
0 = OFF (high impedance output)
1 = ON
Enables VMID resistor string
0 = disabled
1 = enabled
Resistor selection for VMID potential divider
00 = off
01 = Vmid comes from 300kΩ R-string
10 = Vmid comes from 50kΩ R-string
11 = Vmid comes from 5kΩ R-string
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
REFER TO
REFER TO
WM8351
223
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