WM8726 Wolfson Microelectronics plc, WM8726 Datasheet - Page 16

• Manufacturer Part Number: WM8726
• Description: 24-bit 192khz Stereo Dac
• Manufacturer: Wolfson Microelectronics plc

WM8726
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A diagram showing how the various Mute modes interact is shown below in Figure 11.
Figure 11 Selection Logic for MUTE Modes
INPUT AUDIO FORMAT SELECTION
FORMAT (pin 13) controls the data input format.
Table 3 Input Audio Format Selection
Notes:
INPUT DSP FORMAT SELECTION
Table 4 DSP Interface Formats
DE-EMPHASIS CONTROL
DEM (pin 12) is an input control for selection of de-emphasis filtering to be applied.
Table 5 De-emphasis Control
DAC OUTPUT PHASE
In the DAC to analog output, the analog output data VOUTL/R, is a phase inverted representation of the
digital input signal.
1.
2.
FORMAT
In 16-24 bit I
high for a minimum of data width BCKINs and low for a minimum of data width BCKINs,
unless Note 2. For data widths greater than 24 bits, the LSB’s will be truncated and the
most significant 24 bits will be used by the internal processing.
If exactly 16 BCKIN cycles occur in both the low and high period of LRCIN the WM8726 will
assume the data is 16-bit and accept the data accordingly.
0
1
FORMAT
DEEMPH
(Internal Signal)
AUTOMUTED
0
1
0
1
MUTE
2
PIN
S mode, any data from 16-24 bits or more is supported provided that LRCIN is
50% LRCIN DUTY CYCLE
16 bit
(MSB-first, right justified)
I
(Philips serial data protocol)
2
S format up to 24 bit
10k
INPUT DATA MODE
16 bit right justified
DE-EMPHASIS
16–24 bit I
Off
On
2
S
LRCIN of 4 BCKIN or Less Duration
DSP format – ‘late’ mode
DSP format – ‘early’ mode
SOFTMUTE
(Internal Signal)
PD Rev 4.6 May 2008
Production Data
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