WM8912 Просмотр технического описания (PDF) - Cirrus Logic
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WM8912 Datasheet PDF : 129 Pages
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Production Data
WM8912
PIN DESCRIPTION
NAME
QFN-32
TYPE
DESCRIPTION
IRQ/GPIO1
SCLK
1
Digital Input / Output
GPIO1 / Interrupt
2
Digital Input
Control interface clock input
SDA
DBVDD
3
Digital Input / Output
Control interface data input / output
4
Supply
Digital buffer supply (powers audio interface and control
interface)
DGND
DCVDD
5
Supply
6
Supply
Digital ground (return path for DCVDD and DBVDD)
Digital core supply
CPVDD
CPCA
CPGND
7
Supply
8
Analogue Input
9
Supply
Charge pump power supply
Charge pump flyback capacitor pin
Charge pump ground
CPCB
CPVOUTP
10
Analogue Input
11
Analogue Output
Charge pump flyback capacitor pin
Charge pump positive supply decoupling (powers
HPOUTL/R, LINEOUTL/R)
CPVOUTN
12
Analogue Output
Charge pump negative supply decoupling (powers
HPOUTL/R, LINEOUTL/R)
HPOUTL
13
Analogue Output
Left headphone output (line or headphone output)
HPOUTFB
HPOUTR
14
Analogue Output
15
Analogue Output
Headphone output ground loop noise rejection feedback
Right headphone output (line or headphone output)
LINEOUTL
LINEOUTFB
LINEOUTR
16
Analogue Output
17
Analogue Output
18
Analogue Output
Left line output 1 (line output)
Line output ground loop noise rejection feedback
Right line output 1 (line output)
DNC
DNC
19
n/a
20
n/a
Do Not Connect
Do Not Connect
VMIDC
AGND
21
Analogue Output
22
Supply
Midrail voltage decoupling capacitor
Analogue power return
AVDD
DNC
DNC
23
Supply
24
n/a
25
n/a
Analogue power supply
Do Not Connect
Do Not Connect
DNC
DNC
26
n/a
27
n/a
Do Not Connect
Do Not Connect
MCLK
BCLK/GPIO4
28
Digital Input
Master clock for DAC
29
Digital Input / Output
Audio interface bit clock / GPIO4
LRCLK
DNC
DACDAT
30
Digital Input / Output
Audio interface left / right clock
31
n/a
Do Not Connect
32
Digital Input
DAC digital audio data
GND_PADDLE
33
Die Paddle
Note:
It is recommended that the QFN ground paddle is connected to analogue ground on the application PCB.
w
PD, Rev 4.1, February 2013
7
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