wm8953 Wolfson Microelectronics plc, wm8953 Datasheet - Page 95

• Manufacturer Part Number: wm8953
• Description: Low Power Stereo Adc With Pll And Tdm Interface Low Power Stereo Adc With Pll And Tdm Interface
• Manufacturer: Wolfson Microelectronics plc

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Production Data
R58 (3Ah)
Microphone
Bias
R59 (3Bh)
R60 (3Ch)
PLL (1)
R61 (3Dh)
PLL (2)
R62 (3Eh)
PLL (2)
R63 (3Fh) to
R116 (74h)
R117 (75h)
Access
Control
REGISTER
ADDRESS
3
2:0
15:8
7:6
5:3
2
1
0
15:0
15:8
7
6
5:4
3:0
15:8
7:0
15:8
7:0
Reserved
15:2
1
BIT
BUFIOEN
MCDSCTH
[1:0]
MDCTHR
[2:0]
MCD
MBSEL
SDM
PRESCALE
PLLN
[3:0]
PLLK
[15:8]
PLLK
[7:0]
EXT_ACCESS_ENA
LABEL
0b
000b
00h
00b
000b
0b
0b
0b
0000h
00h
0b
0b
00b
8h
00h
31h
00h
26h
0000h
0b
DEFAULT
Enables the VGS / R current generator and the analogue input
bias
0 = Disabled
1 = Enabled
Reserved - Do Not Change
Reserved - Do Not Change
MICBIAS Short Circuit Current Detect Threshold
00 = 600uA
01 = 1200uA
10 = 1800uA
11 = 2400uA
These values are for AVDD=3.3V and scale proportionally with
AVDD.
MICBIAS Current Detect Threshold
000 = 200uA
001 = 350uA
010 = 500uA
011 = 650uA
100 = 800uA
101 = 950uA
110 = 1100uA
111 = 1200uA
These values are for AVDD=3.3V and scale proportionally with
AVDD.
MICBIAS Current and Short Circuit Detect Enable
0 = disabled
1 = enabled
Reserved - Do Not Change
Microphone Bias Voltage Control
0 = 0.9 * AVDD
1 = 0.65 * AVDD
Reserved - Do Not Change
Reserved - Do Not Change
Enable PLL Integer Mode
0 = Integer mode
1 = Fractional mode
Divide MCLK by 2 at PLL input
0 = Divide by 1
1 = Divide by 2
Reserved - Do Not Change
Integer (N) part of PLL frequency ratio.
Use values greater than 5 and less than 13.
Reserved - Do Not Change
Fractional (K) part of PLL frequency ratio
(Most significant bits)
Reserved - Do Not Change
Fractional (K) part of PLL frequency ratio
(Least significant bits)
Reserved - Do Not Change
Extended Register Map Access
0 = disabled
1 = enabled
DESCRIPTION
PD, January 2009, Rev 4.0
WM8953
95