WM8716
Production Data
PIN DESCRIPTION
PIN
NAME
TYPE
DESCRIPTION
Hardware Mode
Software
Mode
Normal Mode
Differential Mode
8X Mode
1
2
LRCIN
DIN
Digital input
Digital input
Sample rate clock input.
Audio data serial input
DINL
Audio data
serial input
3
BCKIN
CLKO
Digital input
Digital output
Analogue input
Analogue output
Supply
Audio data bit clock input.
4
Oscillator buffered output (system clock).
Oscillator input.
5
XTI
6
XTO
Oscillator output.
7
DGND
DVDD
Digital ground supply.
8
Supply
Digital positive supply.
9
AVDDR
AGNDR
VMIDR
MODE8X
VOUTR
AGND
AVDD
Supply
Analogue positive supply.
Analogue ground supply.
Mid rail right channel.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Supply
Analogue output
Digital input
Analogue output
Supply
Internal pull-down, active high, 8 x fs mode.
Right channel DAC output.
Analogue ground supply.
Analogue positive supply.
Left channel DAC output.
Supply
VOUTL
DIFFHW
VMIDL
AGNDL
AVDDL
ZERO
Analogue output
Digital input
Analogue output
Supply
Internal pull-down, active high, differential mono mode
Mid rail left channel.
Analogue ground supply.
Supply
Analogue positive supply.
Digital output
Digital input
Infinite zero detect – active low. Open drain type output with active pull-down.
Reset input – active low. Internal pull-up.
RSTB
CSBIWO
Digital input
Internal pull-down
Wordlength:
Wordlength:
Wordlength:
Low for
serial
interface
operation.
Low for 16-bit data.
Low for 16-bit data.
Low for 20-bit data.
High for 24-bit data.
High for 20-bit
(normal) or 24-bit
I2S data.
High for 20-bit
(normal) or 24-bit
I2S data.
24
25
MODE
Digital input
Internal pull-up
Low for hardware
mode.
Low for left
mono mode. High for
right mono mode
DINR
High for
software
mode.
MUTEB
Digital input
Internal pull-up
Low to soft mute.
Low to soft mute.
Low to soft mute.
Low to soft
mute.
High for normal
operation.
High for normal
operation.
High for normal
operation.
High for
normal
operation.
Z for automute.
Z for automute.
Z for automute.
Z for
automute.
26
27
28
MD/DM0
MC/DM1
ML/I2S
Digital input
Internal pull-up
De-emphasis mode
select bit 0.
Low for no
de-emphasis.
LRP – LRCLK
polarity select.
Control serial
interface
data signal.
High for 44.1kHz
de-emphasis.
Digital input
Internal pull-up
De-emphasis mode
select bit 1.
Low for normal filter
operation.
Unused.
Control serial
interface
clock signal.
Leave unconnected.
High for filter slow
roll-off.
Digital input
Internal pull-up
Audio serial format:
Low – right justified.
High – I2S.
Audio serial format:
Low – right justified.
High – I2S.
Input data format:
Low – right justified.
High – left justified.
Control serial
interface
load signal.
Note: Digital input pins have Schmitt trigger input buffers except Pin 12 and Pin 17.
w
PD, Rev 4.2,August 2008
8
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
