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WM8940CGEFL/V 데이터시트(PDF) 64 Page - Wolfson Microelectronics plc

부품명 WM8940CGEFL/V
상세설명  Mono CODEC with Speaker Driver
PDF  91 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8940CGEFL/V 데이터시트(HTML) 64 Page - Wolfson Microelectronics plc

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WM8940
Production Data
w
PD, Rev 4.3, November 2011
64
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R8
GPIO
control
7
MODE_GPIO
0
Selects MODE as a GPIO pin
0 = MODE is an input. MODE selects 2-
wire mode when low and 3-wire mode
when high.
1 = MODE can be an input or output
under the control of the GPIO control
register. Interface operates in 3-wire mode
regardless of what happens on the MODE
pin.
Table 54 Mode is GPIO Control
Auto-incremental writes are supported in 2 wire and 3 wire modes. This is enabled by default.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R9
Control
Interface
1
AUTOINC
1
Auto-Incremental write enable
0=Auto-Incremental writes disabled
1=Auto-Incremental writes enabled
Table 55 Control Interface
3-WIRE SERIAL CONTROL MODE
In 3-wire mode, every rising edge of SCLK clocks in one data bit from the SDIN pin. A rising edge on
CSB/GPIO latches in a complete control word consisting of the last 16 bits.
Figure 34 3-Wire Serial Control Interface
READBACK IN 3-WIRE MODE
The following two timing diagrams are also supported.
Figure 35 Alternative 3-Wire Serial Control Timing



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