WM8740
Production Data
PIN DESCRIPTION
PIN
1
NAME
LRCIN
DIN
TYPE
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Supply
DESCRIPTION
Sample rate clock input.
2
Audio data serial input (except in 8XMODE when it is DINL).
Audio data bit clock input .
3
BCKIN
MODE8X
SCLK
4
Internal pull-down, active high, 8 x fs mode.
System clock input.
5
6
DIFFHW
DGND
DVDD
Internal pull-down, active high, differential mono mode.
Digital ground supply.
7
8
Supply
Digital positive supply.
9
AVDDR
AGNDR
VMIDR
Supply
Analogue positive supply.
10
11
12
13
14
15
16
17
18
19
20
21
22
Supply
Analogue ground supply.
Analogue output
Mid rail right channel.
VOUTRP Analogue output
VOUTRN Analogue output
Right channel DAC output positive.
Right channel DAC output negative.
Analogue ground supply.
AGND
AVDD
Supply
Supply
Analogue positive supply.
VOUTLN Analogue output
VOUTLP Analogue output
Left channel DAC output negative.
Left channel DAC output positive.
Mid rail left channel.
VMIDL
AGNDL
AVDDL
ZERO
Analogue output
Supply
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
PD Rev 4.0 April 2004
w
4
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
