WM8591
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PIN DESCRIPTION
PIN
1
NAME
DI
TYPE
DESCRIPTION
Digital Input
Digital Input
Digital Output
(open drain)
Digital Output
(open drain)
Serial interface data
Serial interface clock
2
CL
3
ZFLAGR
Right channel zero flag output (external pull-up required)
4
ZFLAGL
Left channel zero flag output (external pull-up required)
5
6
ADCLRC
ADCBCLK
ADCMCLK
DOUT
Digital Input/Output ADC left/right word clock
Digital Input/Output ADC audio interface bit clock
7
Digital Input
Master ADC clock; 256, 384, 512 or 768fs (fs = word clock frequency)
ADC data output
8
Digital Output
9
DACLRC
DACBCLK
DACMCLK
Digital Input/Output DAC left/right word clock
Digital Input/Output DAC audio interface bit clock
10
11
Digital Input
Master DAC clock; 256, 384, 512, 768fs or 1152fs (fs = word clock
frequency)
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
DIN
DVDD
DGND
VOUTRP
VOUTRN
VOUTLP
VOUTLN
AGND
REFN
VMID
Digital Input
Supply
DAC data input
Digital positive supply
Supply
Digital negative supply
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Supply
DAC right channel positive output
DAC right channel negative output
DAC left channel positive output
DAC left channel negative output
Analogue negative supply and substrate connection
Negative reference input
Midrail divider decoupling pin; must be externally decoupled
Positive reference input
Analogue Input
Analogue Output
Analogue Input
Supply
REFP
AVDD
NC
Analogue positive supply
No Connection
AINL
Analogue Input
Left channel input
NC
No Connection
AINR
Analogue Input
Digital Input
Right channel input
CE
2-wire address select
Notes:
1. Digital input pins have Schmitt trigger input buffers.
PP Rev 1.0 May 2005
w
4
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
