Production Data
WM8772
PIN DESCRIPTION – 28 LEAD SSOP
PIN
1
NAME
MODE
TYPE
Digital input
Control format selection
0 = Software control
1 = Hardware control
Master clock; 256, 384, 512 or 768fs (fs = word clock frequency)
(combined ADCMCLK and DACMCLK)
Audio interface bit clock (combined ADCBCLK and DACBCLK)
Audio left/right word clock (combined ADCLRC and DACLRC)
Digital positive supply
Digital negative supply
DAC channel 1 data input
DAC channel 2 data input
DAC channel 3 data input
ADC data output
Software Mode: Serial interface Latch signal
Hardware Mode: Input Audio Data Format
Software Mode: Serial control interface clock
Hardware Mode: Audio data input word length
Software Mode: Serial interface data
Hardware Mode: De-emphasis selection
DAC Zero Flag output or DAC mute input
ADC reference buffer decoupling pin; 10uF external decoupling
ADC and DAC negative supply
DAC positive reference supply
Midrail divider decoupling pin; 10uF external decoupling
ADC right input
ADC left input
DAC channel 1 left output
DAC channel 1 right output
DAC channel 2 left output
DAC channel 2 right output
DAC channel 3 left output
DAC channel 3 right output
Analogue negative supply and substrate connection
Analogue positive supply
DESCRIPTION
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
MCLK
BCLK
LRC
DVDD
DGND
DIN1
DIN2
DIN3
DOUT
ML/I2S
MC/IWL
MD/DM
MUTE
REFADC
VREFN
VREFP
VMID
AINR
AINL
VOUT1L
VOUT1R
VOUT2L
VOUT2R
VOUT3L
VOUT3R
AGND
AVDD
Digital input
Digital input/output
Digital input/output
Supply
Supply
Digital input
Digital input
Digital input
Digital output
Digital input
Digital input
Digital input
Digital input/output
Analogue output
Supply
Supply
Analogue output
Analogue input
Analogue input
Analogue output
Analogue output
Analogue output
Analogue output
Analogue output
Analogue output
Supply
Supply
Note:
Digital input pins have Schmitt trigger input buffers.
w
PD Rev 4.2 October 2005
7
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
