WM8580
Production Data
PIN
NAME
TYPE
DESCRIPTION
47
VOUT3L
VOUT3R
Analogue Output
Analogue Output
DAC channel 3 left output
DAC channel 3 right output
48
Notes :
1. Digital input pins have Schmitt trigger input buffers. Pins 32, 33, 34 are 5V tolerant.
2. In hardware control mode, pin 30 is used for UNLOCK flag output.
3. In hardware control mode, pin 31 is used for NON_AUDIO flag output.
MULTI-FUNCTION PINS
The WM8580 has 8 Multi-Function Input/Output pins (MFP1 etc.). The function and direction (input/output) of these pins
are configured using the HWMODE input pin and software register control as shown below. If HWMODE is set, the MFPs
have the function shown in column 1 of Table 1. If HWMODE is not set, and the register SAIF_EN is set, the MFPs have
the function shown in column 2. Otherwise, the GPOnOP registers determine the MFP function as shown in columns 3 and
4.
N
Y
HWMODE = 1
Y
N
SAIF_EN = 1
GPIOnOP
PIN NAME
HARDWARE
CONTROL MODE
FUNCTION
SECONDARY AUDIO
INTERFACE FUNCTION
S/PDIF INPUT &
INDEPENDENT
CLOCKING
GENERAL PURPOSE
OUTPUT FUNCTION
2
4
1
PAIFTX_BCLK
ADCMCLK
DR1
3
PAIFTX_BCLK2
ADCMCLK3
SPDIFIN2
SPDIFIN3
SPDIFIN4
GPO6
MFP1
MFP2
MFP3
MFP4
MFP5
MFP6
MFP7
MFP8
MFP9
MFP10
n/a1
n/a1
n/a1
n/a1
n/a1
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6
GPO7
GPO8
GPO9
GPO10
DR2
DR3
DR4
SAIF_BCLK
SAIF_LRCLK
SAIF_DIN
SAIF_DOUT
n/a1
ALLPD
C
GPO7
GPO8
SFRM_CLK
192BLK
GPO9
GPO10
Table 1 Multi-Function Pin Configuration
Notes:
1. These pins are not used as part of the Secondary Audio Interface, so their function is that of either Column 3 or
Column 4.
2. MFP1 usage can be described as follows:
IF (ADC_CLKSEL = MCLK) AND (PAIFTXMS_CLKSEL = MCLK) THEN
MFP1 = GPO1;
ELSE
MFP1 = PAIFTX_BCLK ; (default)
PD Rev 4.3 August 2007
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
