wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 138
wm8918
Manufacturer Part Number
wm8918
Description
Ultra Low Power Dac For Portable Audio Applications
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8918.pdf
(175 pages)
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WM8918
Register 1Ah Audio Interface 2
Register 1Bh Audio Interface 3
w
REGISTER
REGISTER
ADDRESS
ADDRESS
Interface 2
Interface 3
R26 (1Ah)
R27 (1Bh)
Audio
Audio
11:8
10:0
BIT
BIT
4:0
11
OPCLK_DIV[3:
BCLK_DIV[4:0]
LRCLK_RATE[
LRCLK_DIR
LABEL
LABEL
10:0]
0]
000_0100_
DEFAULT
DEFAULT
0_0100
0000
0000
0
GPIO Output Clock Divider
0000 = SYSCLK
0001 = SYSCLK / 2
0010 = SYSCLK / 3
0011 = SYSCLK / 4
0100 = SYSCLK / 5.5
0101 = SYSCLK / 6
0110 = SYSCLK / 8
0111 = SYSCLK / 12
1000 = SYSCLK / 16
1001 to 1111 = Reserved
BCLK Frequency (Master Mode)
00000 = SYSCLK
00001 = SYSCLK / 1.5
00010 = SYSCLK / 2
00011 = SYSCLK / 3
00100 = SYSCLK / 4
00101 = SYSCLK / 5
00110 = SYSCLK / 5.5
00111 = SYSCLK / 6
01000 = SYSCLK / 8 (default)
01001 = SYSCLK / 10
01010 = SYSCLK / 11
01011 = SYSCLK / 12
01100 = SYSCLK / 16
01101 = SYSCLK / 20
01110 = SYSCLK / 22
01111 = SYSCLK / 24
10000 = SYSCLK / 25
10001 = SYSCLK / 30
10010 = SYSCLK / 32
10011 = SYSCLK / 44
10100 = SYSCLK / 48
Audio Interface LRCLK Direction
0 = LRCLK is input
1 = LRCLK is output
LRCLK Rate (Master Mode)
LRCLK clock output = BCLK / LRCLK_RATE
Integer (LSB = 1)
Valid range: 8 to 2047
DESCRIPTION
DESCRIPTION
PD, Rev 4.0, September 2010
REFER TO
REFER TO
Production Data
138
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