wm8580a Wolfson Microelectronics plc, wm8580a Datasheet - Page 6

• Manufacturer Part Number: wm8580a
• Description: Multichannel Codec With S/pdif Transceiver
• Manufacturer: Wolfson Microelectronics plc

WM8580
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.
Table 1 Multi-Function Pin Configuration
Notes:
1.
2.
w
PIN NAME
Notes :
1.
2.
3.
PIN
MFP10
47
48
MFP1
MFP2
MFP3
MFP4
MFP5
MFP6
MFP7
MFP8
MFP9
ELSE
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
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.
MFP1 = GPO1;
MFP1 = PAIFTX_BCLK ; (default)
VOUT3R
VOUT3L
NAME
CONTROL MODE
PAIFTX_BCLK
HARDWARE
SFRM_CLK
FUNCTION
ADCMCLK
192BLK
ALLPD
DR1
DR2
DR3
DR4
C
1
Y
HWMODE = 1
Analogue Output
Analogue Output
INTERFACE FUNCTION
TYPE
SECONDARY AUDIO
SAIF_LRCLK
SAIF_DOUT
SAIF_BCLK
SAIF_DIN
n/a
n/a
n/a
n/a
n/a
n/a
2
N
1
1
1
1
1
1
Y
DAC channel 3 left output
DAC channel 3 right output
SAIF_EN = 1
S/PDIF INPUT &
PAIFTX_BCLK
INDEPENDENT
ADCMCLK
CLOCKING
SPDIFIN2
SPDIFIN3
SPDIFIN4
GPO10
GPO6
GPO7
GPO8
GPO9
N
3
3
DESCRIPTION
2
GPIOnOP
GENERAL PURPOSE
OUTPUT FUNCTION
PD, Rev 4.7, March 2009
GPO10
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6
GPO7
GPO8
GPO9
4
Production Data
6