Production Data
WM8580
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R13
PAIF 4
0Dh
1:0
PAIFTXFMT
[1:0]
10
PAIF Transmitter Audio Data Format
Select
11: DSP Format
10: I2S Format
01: Left justified
00: Right justified
3:2
PAIFTXWL
[1:0]
10
PAIF Transmitter Audio Data Word
Length
11: 32 bits (see Note 1,2)
10: 24 bits
01: 20 bits
00: 16 bits
4
PAIFTXLRP
0
In LJ/RJ/I2S modes
0 = LRCLK not inverted
1 = LRCLK inverted
In DSP Format:
0 = DSP Mode A
1 = DSP Mode B
PAIF Receiver BCLK polarity
0 = BCLK not inverted
1 = BCLK inverted
SAIF Audio Data Format Select
11: DSP Format
5
PAIFTXBCP
0
R14
SAIF 2
0Eh
1:0
SAIFFMT
[1:0]
10
10: I2S Format
01: Left justified
00: Right justified
SAIF Audio Data Word Length
11: 32 bits (see Note 1,2)
10: 24 bits
3:2
SAIFWL
[1:0]
10
01: 20 bits
00: 16 bits
4
SAIFLRP
0
In LJ/RJ/I2S modes
0 = LRCLK not inverted
1 = LRCLK inverted
In DSP Format:
0 = DSP Mode A
1 = DSP Mode B
SAIF BCLK polarity
0 = BCLK not inverted
1 = BCLK inverted
SAIF Enable
5
6
SAIFBCP
SAIF_EN
0
0
0 = SAIF disabled
1 = SAIF enabled
Table 16 Audio Interface Control
Notes
1. Right Justified mode does not support 32-bit data. If word length xAIFxxWL=11b in Right
Justified mode, the word length is forced to 24 bits.
In all modes, the data is signed 2's complement. The digital filters internal signal paths process
24-bit data. If the device is programmed to receive 16 or 20 bit data, the device pads the unused
LSBs with zeros. If the device is programmed into 32 bit mode, the 8 LSBs are ignored.
PD Rev 4.3 August 2007
29
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
