WM8850 View Datasheet(PDF) - Wolfson Microelectronics plc
Part Name
Description
View to exact match
WM8850 Datasheet PDF : 223 Pages
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Pre-Production
NID
00h
01h
NAME
Root
AFG
02h
ADC1
03h
MIC1
04h
S/PDIF Tx 1
05h
S/PDIF Rx
06h
DAC1
07h
DAC2
08h
DAC3
09h
MIC1 Mux
0Ah PGA1
0Bh PGA2
0Ch Port-E
0Dh Port-B
0Eh Port-D
0Fh
S/PDIF Out
10h
S/PDIF In
11h
Port-A
12h
Port-G
13h
Port-F
14h
Beep
15h
MIC2
16h
Port-H
17h
S/PDIF Tx 2
Table 3 Node List
WM8850
NODE LIST
A summary of the capabilities of each node is given in Table 3 below:
WIDGET TYPE
Root
Audio Function Group
Audio Input Converter
Audio Input Converter
Audio Output Converter
Audio Input Converter
Audio Output Converter
Audio Output Converter
Audio Output Converter
Audio Selector
Audio Selector
Selector
Pin Complex
Pin Complex
Pin Complex
Pin Complex
Pin Complex
Pin Complex
Pin Complex
Pin Complex
Beep Generator
Audio Input Converter
Pin Complex
Audio Output Converter
DESCRIPTION
Provides Vendor ID, Device ID, and NID of the AFG.
Provides the number of Widget Nodes, and NID of first
Widget Node. Describes CODEC Audio capabilities.
Supports sample rates from 8kHz to 96kHz, and sample
sizes from 16-bits to 24-bits.
Supports sample rates from 8kHz to 48kHz, and sample
sizes from 16-bits to 24-bits.
Supports sample rates from 32kHz to 192kHz, and
sample sizes from 16-bits to 32-bits. Includes a fully
asynchronous SRC.
As S/PDIF Tx 1, plus error detection.
Supports sample rates from 8kHz to 192kHz, and
sample sizes from 16-bits to 24-bits. Supports digital
attenuation from 0dB to -63.5 dB in 0.5 dB steps.
As DAC1.
As DAC1.
Selects between Digital Mic (Port-D), and Analogue Mic
(Port-B).
Supports a gain range of -12dB to +12 dB in 0.5dB
steps.
As PGA1.
Line Input (VIN1) with presence detection.
Analogue Mic Input (VIN2) with pre-amplifier (0dB,
+10dB, +20dB, +30dB), configurable VREF, presence
detection and custom impedance sensing scheme.
Digital Mic Input (DMIC1) with gain (-12dB to +32dB in
0.5dB steps).
S/PDIF Output with presence detection.
S/PDIF Input with presence detection(Note 1) plus lock and
rate detection.
Ground-referenced headphone/line out (VOUT1) with
presence detection.
Differential line out (VOUT2) with presence detection.
Differential line out (VOUT3) with presence detection.
Generates a configurable tone that can be muxed into
DAC audio paths. Supports a gain range 0dB to -24dB in
6dB steps.
Supports sample rates from 8kHz to 48kHz, and sample
sizes from 16-bits to 24-bits.
Digital Mic Input (DMIC2) with gain (-12 dB to 32dB in
0.5 dB steps). Output port for S/PDIF Tx 2.
Supports sample rates from 32kHz to 192kHz, and
sample sizes from 16-bits to 32-bits.
Notes:
1. The Pin Sense Verb in the SPDIF_IN node does not convey presence detect information, and is used to convey the
status of the SPDIF Rx Lock flag.
2. All Widget Nodes are as defined in the HDA specification; there are no vendor defined widgets.
w
PP, April 2011, Rev 3.2
35
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