WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 127

• Manufacturer Part Number: WM8903LGEFK/RV
• Description: Audio CODECs ULTRA LOW PWR HI FI CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8903LGEFK/RV

• Audio Codec Type: Stereo Codec
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 6
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Sampling Rate: 96kHz
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Adcs / Dacs Signal To Noise Ratio: 96dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pre-Production
R33 (21h)
DAC Digital
1
Register 21h DAC Digital 1
R36 (24h)
ADC Digital
Volume Left
Register 24h ADC Digital Volume Left
w
REGISTER
REGISTER
ADDRESS
ADDRESS
2:1
BIT
7:0
12
11
10
BIT
9
3
0
8
DAC_MUTEMODE
DAC_MUTERATE
ADCL_VOL[7:0] 1100_0000 Left ADC Digital Volume
DAC_SB_FILT
DEEMPH[1:0]
DAC_MONO
DAC_MUTE
DAC_OSR
ADCVU
LABEL
LABEL
DEFAULT
DEFAULT
0
00
0
0
0
0
0
0
ADC Volume Update
Writing a 1 to this bit causes left and right ADC
volume to be updated simultaneously
00h = Mute
01h = -71.625dB
02h = -71.250dB
… (0.375dB steps)
C0h = 0dB
… (0.375dB steps)
EFh = +17.625dB
F0h to FFh = +17.625dB
DAC Mono Mix
0 = Stereo
1 = Mono (Mono mix output on enabled DAC)
Selects DAC filter characteristics
0 = Normal mode
1 = Sloping stopband mode (recommended when
fs ≤ 24kHz)
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 Soft Mute Control
0 = DAC Un-mute
1 = DAC Mute
DAC De-Emphasis Control
00 = No de-emphasis
01 = 32kHz sample rate
10 = 44.1kHz sample rate
11 = 48kHz sample rate
DAC Oversampling Control
0 = Low power (normal oversample)
1 = High performance (double rate)
DESCRIPTION
DESCRIPTION
PP, Rev 3.1, August 2009
WM8903
127