WM8726CGED/R 查看數據表（PDF） - Wolfson Microelectronics plc
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WM8726CGED/R Datasheet PDF : 23 Pages
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WM8726
Production Data
A diagram showing how the various Mute modes interact is shown below in Figure 11.
AUTOMUTED
(Internal Signal)
MUTE
PIN
10k
SOFTMUTE
(Internal Signal)
Figure 11 Selection Logic for MUTE Modes
INPUT AUDIO FORMAT SELECTION
FORMAT (pin 13) controls the data input format.
FORMAT
INPUT DATA MODE
0
16 bit right justified
1
16–24 bit I2S
Table 3 Input Audio Format Selection
Notes:
1. In 16-24 bit I2S mode, any data from 16-24 bits or more is supported provided that LRCIN is
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.
2. 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.
INPUT DSP FORMAT SELECTION
FORMAT
0
1
50% LRCIN DUTY CYCLE
16 bit
(MSB-first, right justified)
I2S format up to 24 bit
(Philips serial data protocol)
Table 4 DSP Interface Formats
LRCIN of 4 BCKIN or Less Duration
DSP format – ‘late’ mode
DSP format – ‘early’ mode
DE-EMPHASIS CONTROL
DEM (pin 12) is an input control for selection of de-emphasis filtering to be applied.
DEEMPH
0
1
Table 5 De-emphasis Control
DE-EMPHASIS
Off
On
DAC OUTPUT PHASE
In the DAC to analogue output, the analogue output data VOUTL/R, is a phase inverted representation of
the digital input signal.
w
PD, Rev 4.8, January 2012
16
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