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WM8850 View Datasheet(PDF) - Wolfson Microelectronics plc

Part NameDescriptionManufacturer
WM8850 Multi-Channel High Definition Audio CODEC Wolfson
Wolfson Microelectronics plc Wolfson
WM8850 Datasheet PDF : 223 Pages
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WM8850
Pre-Production
ADC1 supports all common sample rates from 8kHz to 96kHz and data widths of 16, 20, 24 and 32-
bit (Float-32).
The sample rate and word length of the data captured by the ADC1 node is set using the Stream
Format Verb. Table 9 below shows the required settings for Base, Mult and Div as part of the Stream
Format Verb to obtain the required sample rate.
SAMPLE RATE
BASE
MULT
DIV
8kHz
0h
0h
5h
11.025kHz
1h
0h
3h
16kHz
0h
0h
2h
22.05kHz
1h
0h
1h
24kHz
0h
0h
1h
32kHz
0h
1h
2h
44.1kHz
1h
0h
0h
48kHz
0h
0h
0h
88.2kHz
1h
1h
0h
96kHz
0h
1h
0h
Table 9 ADC1 Supported Sample Rate Settings
Note: Other settings of Base, Mult and Div are reserved and should not be set.
The ADC1 output data is by default set to provide the captured waveform from the left channel in
Channel 0, and the right channel in Channel 1. It is possible to adjust this mapping using the vendor-
specific Channel Copy Verb.
SET VERB BIT
7B1h
1
0
BITFIELD
NAME
CHAN1_
SEL
CHAN0_
SEL
DEFAULT
DESCRIPTION
1
Channel 1 (right) Mapping Control:
0 = Channel 1 takes data from left audio
channel
1 = Channel 1 takes data from right audio
channel
0
Channel 0 (left) Mapping Control:
0 = Channel 0 takes data from left audio
channel
1 = Channel 0 takes data from right audio
channel
w
PP, April 2011, Rev 3.2
42
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