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WM1811A Datasheet(PDF) 153 Page - Wolfson Microelectronics plc

Part # WM1811A
Description  Multi-Channel Audio Hub CODEC for Smartphones
PDF  328 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM1811A Datasheet(HTML) 153 Page - Wolfson Microelectronics plc

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Production Data
WM1811A
w
PD, November 2013, Rev 4.1
153
All four of these modes are MSB first. They are described inthe following sections. Refer to the “Signal
Timing Requirements” section for timing information.
Time Division Multiplexing (TDM) is available in all four data format modes. The WM1811A can be
configured to transmit and receive in one of two timeslots.
Two variants of DSP mode are supported - ‘Mode A’ and ‘Mode B’. Mono operation can be selected
on either audio interface in both DSP modes. PCM operation is supported using the DSP mode.
MASTER AND SLAVE MODE OPERATION
The WM1811A digital audio interfaces can operate as a master or slave as shown in Figure 45 and
Figure 46. The associated control bits are described in “Digital Audio Interface Control”.
Figure 45 Master Mode
Figure 46 Slave Mode
OPERATION WITH TDM
Time division multiplexing (TDM) allows multiple devices to transfer data simultaneously on the same
bus. The WM1811A ADCs and DACs support TDM in master and slave modes for all data formats
and word lengths. TDM is enabled and configured using register bits defined in the “Digital Audio
Interface Control” section.
WM1811A
Processor
WM1811A
or similar
CODEC
ADCDAT
LRCLK
DACDAT
BCLK
ADCDAT
LRCLK
DACDAT
BCLK
WM1811A
Processor
WM1811A
or similar
CODEC
ADCDAT
LRCLK
DACDAT
BCLK
ADCDAT
LRCLK
DACDAT
BCLK
Figure 47 TDM with WM1811A as Master
Figure 48 TDM with Other CODEC as Master



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