WM8974 Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8974 Datasheet PDF : 63 Pages
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WM8974
PIN DESCRIPTION
PIN NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
NAME
MICBIAS
AVDD
AGND
DCVDD
DBVDD
DGND
ADCDAT
DACDAT
FRAME
BCLK
MCLK
CSB/GPIO
SCLK
SDIN
MODE
MONOOUT
SPKROUTP
SPKRGND
SPKROUTN
SPKRVDD
AUX
VMID
MICN
MICP
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TYPE
Analogue Output
Supply
Supply
Supply
Supply
Supply
Digital Output
Digital Input
Digital Input / Output
Digital Input / Output
Digital Input
Digital Input / Output
Digital Input
Digital Input / Output
Digital Input
Analogue Output
Analogue Output
Supply
Analogue Output
Supply
Analogue Input
Reference
Analogue Input
Analogue Input
DESCRIPTION
Microphone Bias
Analogue supply (feeds ADC and DAC)
Analogue ground (feeds ADC and DAC)
Digital Core supply
Digital Buffer (Input/Output) supply
Digital ground
ADC Digital Audio Data Output
DAC Digital Audio Data Input
DAC and ADC Sample Rate Clock or Frame synch
Digital Audio Port Clock
Master Clock Input
3-Wire MPU Chip Select or General Purpose Input/Output pin.
3-Wire MPU Clock Input / 2-Wire MPU Clock Input
3-Wire MPU Data Input / 2-Wire MPU Data Input
Control Interface Mode Selection Pin.
mono output
Speaker Output Positive
Speaker ground (feeds speaker and mono output amps only)
Speaker Output Negative
Speaker supply (feeds speaker and mono output amps only)
Auxiliary analogue input
Decoupling for midrail reference voltage
Microphone negative input
Microphone positive input (common mode)
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PP Rev 1.1 September 2004
4
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