WM8766 Wolfson Microelectronics plc, WM8766 Datasheet - Page 21

• Manufacturer Part Number: WM8766
• Description: 24-bit, 192khz 6-channel Dac
• Manufacturer: Wolfson Microelectronics plc

Production Data
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be supported by setting the BCP register bit. Setting BCP to 1 inverts the polarity of BCLK to the
inverse of that shown in Figure 13, Figure 14, Figure 15, Figure 16, and Figure 17.
The IWL[1:0] bits are used to control the input word length.
Note: 32-bit right justified mode is not supported.
In all modes, the data is signed 2's complement. The digital filters always input 24-bit data. If the
DAC is programmed to receive 16 or 20 bit data, the WM8766 pads the unused LSBs with zeros. If
the DAC is programmed into 32 bit mode, the 8 LSBs are ignored.
Note: In 24 bit I
minimum of 24 BCLKs and low for a minimum of 24 BCLKs.
A number of options are available to control how data from the Digital Audio Interface is applied to
the DAC channels.
REGISTER ADDRESS
REGISTER ADDRESS
Interface Control
Interface Control
0000011
0000011
2
S mode, any width of 24 bits or less is supported provided that LRCLK is high for a
BIT
BIT
5:4
3
LABEL
LABEL
BCP
[1:0]
IWL
DEFAULT
DEFAULT
00
0
BCLK Polarity (DSP Modes):
Input Word Length:
0: Normal BCLK polarity
1: Inverted BCLK polarity
00 : 16 bit data
01: 20 bit data
10: 24 bit data
11: 32 bit data
DESCRIPTION
DESCRIPTION
PD Rev 4.1 July 2005
WM8766
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