WM8581AGEFT 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
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WM8581AGEFT Datasheet PDF : 100 Pages
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WM8581
Production Data
PIN
NAME
TYPE
DESCRIPTION
47
48
Notes :
VOUT3L
VOUT3R
Analogue Output
Analogue Output
DAC channel 3 left output
DAC channel 3 right output
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 WM8581 has 7 Multi-Function Input/Output pins (MFP1 etc.). The function and direction (input/output) of these pins
reconfigured 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.
Y HWMODE = 1 N
Y SAIF_EN = 1 N
GPIOnOP
PIN NAME
MFP1
MFP2
MFP3
MFP4
MFP5
MFP6
MFP7
HARDWARE
CONTROL MODE
FUNCTION
1
PAIFTX_BCLK
ADCMCLK
DR1
DR2
DR3
DR4
ALLPD
SECONDARY AUDIO
INTERFACE FUNCTION
2
n/a1
n/a1
n/a1
SAIF_DIN
SAIF_DOUT
SAIF_BCLK
SAIF_LRCLK
Table 1 Multi-Function Pin Configuration
S/PDIF INPUT &
INDEPENDENT
CLOCKING
3
PAIFTX_BCLK2
ADCMCLK3
SPDIFIN2
SPDIFIN3
SPDIFIN4
GPO6
GPO7
GENERAL PURPOSE
OUTPUT FUNCTION
4
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6
GPO7
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 can by GPO1 only if ADC_CLKSEL and PAIFTXMS_CLKSEL (if in master mode) source MCLK.Note that by default
ADC_CLKSEL sources ADCMCLK pin.
3. MFP2 can be GPO2 if neither ADC_CLKSEL, TX_CLKSEL or SAIFMS_CLKSEL (if in master mode) source ADCMCLK.Note
that by default all three ADC_CLKSEL sources ADCMCLK pin.
w
PD Rev 4.0 April 2007
6
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