
WM8768
Production Data
w
PD Rev 4.1 March 2005
4
PIN DESCRIPTION – 28 PIN SSOP
PIN
1
NAME
MODE
TYPE
Digital input
DESCRIPTION
Control format selection
0 = Software control
1 = Hardware control
Master clock; 128, 192, 256, 384, 512, 768fs or 1152fs (fs = word clock
frequency)
Digital input/output Audio interface bit clock
Digital input/output Audio left/right word clock
Supply
Digital positive supply
Supply
Digital negative supply
Digital input
DAC channel 1 data input
Digital input
DAC channel 2 data input
Digital input
DAC channel 3 data input
Digital input
DAC channel 4 data input
Digital input
Software Mode: Serial interface Latch signal
Hardware Mode: Input Audio Data Format
Digital input
Software Mode: Serial control interface clock
Hardware Mode: Audio data input word length
Digital input
Software Mode: Serial interface data
Hardware Mode: De-emphasis selection
Digital input/output DAC Zero Flag output or DAC mute input
Analogue output
Test Pin
Analogue input
DAC negative reference supply
Analogue input
DAC positive reference supply
Analogue output
Midrail divider decoupling pin; 10uF external decoupling
Analogue output
DAC channel 4 left output
Analogue output
DAC channel 4 right output
Analogue output
DAC channel 1 left output
Analogue output
DAC channel 1 right output
Analogue output
DAC channel 2 left output
Analogue output
DAC channel 2 right output
Analogue output
DAC channel 3 left output
Analogue output
DAC channel 3 right output
Supply
Analogue negative supply and substrate connection
Supply
Analogue positive supply
Note
: Digital input pins have Schmitt trigger input buffers.
2
MCLK
Digital input
3
4
5
6
7
8
9
10
11
BCLK
LRCLK
DVDD
DGND
DIN1
DIN2
DIN3
DIN4
ML/I2S
12
MC/IWL
13
MD/DM
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
MUTE
TESTREF1
VREFN
VREFP
VMID
VOUT4L
VOUT4R
VOUT1L
VOUT1R
VOUT2L
VOUT2R
VOUT3L
VOUT3R
AGND
AVDD