wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 166

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

WM8400
w
R10 (0Ah)
Audio
Interface (4)
R11 (0Bh)
DAC Control
REGISTER
ADDRESS
15
14
13
12
11
10:0
15:14
13
12:11
10
9
8
7
6
5:4
3
2
BIT
ALRCGPIO1
ALRCBGPIO6
AIF_TRIS
DACLRC_DIR
DACLRC_RATE
[10:0]
DAC_SDMCLK_RA
TE
AIF_LRCLKRATE
DAC_MONO
DAC_SB_FILT
DAC_MUTERATE
DAC_MUTEMODE
DEEMP
DAC_MUTE
LABEL
0b
0b
0b
0b
0b
040h
00b
0b
00b
0b
0b
0b
0b
0b
00b
0b
1b
DEFAULT
ADCLRC/GPIO1 Pin Function Select
0 = ADCLRC pin
1 = GPIO1 pin (ADCLRC connected to DACLRC internally)
GPIO6/ADCLRCB Pin Function Select
0 = GPIO6 pin
1 = Inverted ADCLRC clock output
Audio Interface and GPIO Tristate
0 = Audio interface and GPIO pins operate normally
1 = Tristate all audio interface and GPIO pins
Reserved - Do Not Change
DACLRC Direction
(Forces DACLRC clock to be output in slave mode)
0 = DACLRC normal operation
1 = DACLRC clock output enabled
DACLRC Rate
DACLRC clock output = BCLK / DACLRC_RATE
Integer (LSB = 1)
Valid from 8..2047
Reserved - Do Not Change
DAC clocking rate
0 = Normal operation (64fs)
1 = SYSCLK/4
Reserved - Do Not Change
LRCLK Rate
0 = Normal mode (256 * fs)
1 = USB mode (272 * fs)
DAC Mono Mix
0 = Stereo
1 = Mono (Mono mix output on enabled DACs)
Selects DAC filter characteristics
0 = Normal mode
1 = Sloping stopband mode
DAC Soft Mute Ramp Rate
0 = Fast ramp (fs/2, maximum ramp time is 10.7ms at fs=48k)
1 = Slow ramp (fs/32, maximum ramp time is 171ms at
fs=48k)
DAC Soft Mute Mode
0 = Disabling soft-mute (DAC_MUTE=0) will cause the DAC
volume to change immediately to DACL_VOL and DACR_VOL
settings
1 = Disabling soft-mute (DAC_MUTE=0) will cause the DAC
volume to ramp up gradually to the DACL_VOL and
DACR_VOL settings
DAC De-Emphasis Control
00 = De-emphasis disabled
01 = De-emphasis enabled (Optimised for fs=32kHz)
10 = De-emphasis enabled (Optimised for fs=44.1kHz)
11 = De-emphasis enabled (Optimised for fs=48kHz)
Reserved - Do Not Change
DAC Soft Mute Control
0 = DAC Un-mute
1 = DAC Mute
DESCRIPTION
PP, April 2009, Rev 3.0
Pre-Production
166