WM8742 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'WM8742' PDF : 65 Pages View PDF
Production Data
WM8742
HARDWARE CONTROL MODE
When the MODE pin is held ‘low’ the WM8742 is set to hardware control mode and a limited feature
set can be configured.
PIN
NAME
DESCRIPTION
24
MODE/ 0 = Hardware control mode
LRSEL
1 = 3-wire serial control mode
Z = 2-wire serial control mode
Table 44 MODE/LRSEL Hardware Control Pin Function
DSD AND PCM MODE SWITCHING
The audio interface mode can be switched between DSD Direct and PCM by controlling the state of
pin DSD. It is recommended that the chip is forced into a MUTE state before dynamically switching
modes.
PIN
NAME
DESCRIPTION
27
SCLK/DSD 0 = PCM Mode
1 = DSD Direct Mode
Table 45 SCLK/DSD Hardware Control Pin Function
AUDIO INPUT FORMAT
Under hardware control, it is possible to select between four different modes of operation for the PCM
audio interface.
PIN NUMBER
NAME
28
CSB/SADDR/I2S
23
IWO/DOUT
DESCRIPTION
STATUS
0
0
16-bit right justified
0
1
24-bit right justified
1
0
24-bit left justified
1
1
24-bit I2S
Table 46 CSB/SADDR/I2S and IWO/DOUT Hardware Control Pin Function
w
PD, Rev 4.3, February 2013
39
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