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WM8994ECS/R 数据表(PDF) 234 Page - Cirrus Logic

部件名 WM8994ECS/R
功能描述  Multi-channel Audio Hub CODEC for Smartphones
PDF  363 Pages
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制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

WM8994ECS/R 数据表(HTML) 234 Page - Cirrus Logic

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WM8994
234
Rev 4.6
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R57 (0039h)
AntiPOP (2)
6:5
VMID_RAMP [1:0]
10
VMID soft start enable / slew rate
control
00 = Normal slow start
01 = Normal fast start
10 = Soft slow start
11 = Soft fast start
If VMID_RAMP = 1X is selected for
VMID start-up or shut-down, then the
soft-start circuit must be reset by
setting VMID_RAMP=00 after VMID is
disabled, before VMID is re-enabled.
VMID is disabled / enabled using the
VMID_SEL register.
2
STARTUP_BIAS_
ENA
0
Enables the Start-Up bias current
generator
0 = Disabled
1 = Enabled
1
BIAS_SRC
1
Selects the bias current source
0 = Normal bias
1 = Start-Up bias
Table 137 Soft Start Control



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