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WM9090ECS/R データシート(PDF) 71 Page - Wolfson Microelectronics plc

部品番号 WM9090ECS/R
部品情報  Ultra Low Power Audio Subsystem
PDF  81 Pages
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メーカー  WOLFSON [Wolfson Microelectronics plc]
ホームページ  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9090ECS/R データシート(HTML) 71 Page - Wolfson Microelectronics plc

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Production Data
WM9090
w
PD, November 2010, Rev 4.1
71
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
3
HPOUT1R_RM
V_SHORT
0
Removes HPOUT1R short
0 = HPOUT1R short enabled
1 = HPOUT1R short removed
For pop-free operation, this bit should be set to 1 as the
final step in the HPOUTR Enable sequence.
2
HPOUT1R_OU
TP
0
Enables HPOUT1R output stage
0 = Disabled
1 = Enabled
For pop-free operation, this bit should be set to 1 after
the DC offset cancellation has been performed.
1
HPOUT1R_DL
Y
0
Enables HPOUT1R intermediate stage
0 = Disabled
1 = Enabled
For pop-free operation, this bit should be set to 1 after
the output signal path has been configured, and before
the DC Offset cancellation is scheduled This bit should
be set with at least 20us delay after HPOUT1L_ENA.
Register 60h Analogue HP 0
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R98 (62h)
AGC Control
0
15
AGC_CLIP_EN
A
1
Enable AGC Anti-Clip Mode
0 = Disabled
1 = Enabled
11:8
AGC_CLIP_TH
R [3:0]
0110
AGC Anti-Clip Threshold
Sets the headroom between SPKPGA output and
SPKVDD at which Anti-Clip limiting will be applied
0000 = -200mV
0001 = -150mV
0010 = -100mV
0011 = -50mV
0100 = 0mV
0101 = 50mV
0110 = 100mV
0111 = 150mV
1000 = 200mV
1001 = 250mV
1010 = 300mV
1011 = 400mV
1100 = 500mV
1101 = 600mV
1110 = 700mV
1111 = 800mV
6:4
AGC_CLIP_AT
K [2:0]
100
AGC Anti-Clip Attack Rate
Sets the rate of AGC gain reduction when clipping is
detected
000 = 0.6ms/6dB
001 = 5.4ms/6dB
010 = 10.2ms/6dB
011 = 15.0ms/6dB
100 = 19.8ms/6dB
101 = 24.6ms/6dB
110 = 29.4ms/6dB
111 = 34.1ms/6dB



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