WM8580_07_12 datasheet(6/97 Pages) WOLFSON

6 / 97 page

WM8580

Production Data

PD Rev 4.3 August 2007

NAME

TYPE

DESCRIPTION

VOUT3L

Analogue Output

DAC channel 3 left output

VOUT3R

Analogue Output

DAC channel 3 right output

Notes :

Digital input pins have Schmitt trigger input buffers. Pins 32, 33, 34 are 5V tolerant.

In hardware control mode, pin 30 is used for UNLOCK flag output.

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

PIN NAME

HARDWARE

CONTROL MODE

FUNCTION

SECONDARY AUDIO

INTERFACE FUNCTION

S/PDIF INPUT &

INDEPENDENT

CLOCKING

GENERAL PURPOSE

OUTPUT FUNCTION

MFP1

PAIFTX_BCLK

n/a1

PAIFTX_BCLK2

GPO1

MFP2

ADCMCLK

n/a1

ADCMCLK3

GPO2

MFP3

DR1

n/a1

SPDIFIN2

GPO3

MFP4

DR2

n/a1

SPDIFIN3

GPO4

MFP5

DR3

n/a1

SPDIFIN4

GPO5

MFP6

DR4

SAIF_BCLK

GPO6

MFP7

ALLPD

SAIF_LRCLK

GPO7

MFP8

SAIF_DIN

GPO8

MFP9

SFRM_CLK

SAIF_DOUT

GPO9

MFP10

192BLK

n/a1

GPO10

Table 1 Multi-Function Pin Configuration

Notes:

These pins are not used as part of the Secondary Audio Interface, so their function is that of either Column 3 or

Column 4.

MFP1 usage can be described as follows:

IF (ADC_CLKSEL = MCLK) AND (PAIFTXMS_CLKSEL = MCLK) THEN

MFP1 = GPO1;

ELSE

MFP1 = PAIFTX_BCLK ; (default)

HWMODE = 1

GPIOnOP

SAIF_EN = 1

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