WM8973_05 Datasheet, PDF (5/61 Pages) Wolfson Microelectronics plc – Stereo CODEC for Portable Audio Applications

Production Data
PIN DESCRIPTION
WM8973L
PIN NO
NAME
TYPE
DESCRIPTION
1
MCLK
Digital Input
Master Clock
2
DCVDD
Supply
Digital Core Supply
3
DBVDD
Supply
Digital Buffer (I/O) Supply
4
DGND
Supply
Digital Ground (return path for both DCVDD and DBVDD)
5
BCLK
Digital Input / Output
Audio Interface Bit Clock
6
DACDAT
Digital Input
DAC Digital Audio Data
7
DACLRC
Digital Input / Output
Audio Interface Left / Right Clock/Clock Out
8
ADCDAT
Digital Output
ADC Digital Audio Data
9
ADCLRC
Digital Input / Output
Audio Interface Left / Right Clock
10
MONOOUT
Analogue Output
Mono Output
11
OUT3
Analogue Output
Analogue Output 3 (can be used as Headphone Pseudo Ground)
12
ROUT1
Analogue Output
Right Output 1 (Line or Headphone)
13
LOUT1
Analogue Output
Left Output 1 (Line or Headphone)
14
HPGND
Supply
Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2)
15
ROUT2
Analogue Output
Right Output 1 (Line or Headphone or Speaker)
16
LOUT2
Analogue Output
Left Output 1 (Line or Headphone or Speaker)
17
HPVDD
Supply
Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2,
MONOUT)
18
AVDD
Supply
Analogue Supply
19
AGND
Supply
Analogue Ground (return path for both AVDD)
20
VREF
Analogue Output
Reference Voltage Decoupling Capacitor
21
VMID
Analogue Output
Midrail Voltage Decoupling Capacitor
22
MICBIAS
Analogue Output
23
RINPUT3 /
Analogue Input
HPDETECT
24
LINPUT3
Analogue Input
Microphone Bias
Right Channel Input 3 or Headphone Plug-in Detection
Left Channel Input 3
25
RINPUT2
Analogue Input
26
LINPUT2
Analogue Input
27
RINPUT1
Analogue Input
28
LINPUT1
Analogue Input
Right Channel Input 2
Left Channel Input 2
Right Channel Input 1
Left Channel Input 1
29
MODE
Digital Input
Control Interface Selection
30
CSB
Digital Input
Chip Select / Device Address Selection
31
SDIN
Digital Input/Output
Control Interface Data Input / 2-wire Acknowledge output
32
SCLK
Digital Input
Control Interface Clock Input
Note:
It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
w
PD Rev 4.2 September 2005
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