WM8351GEB/V Wolfson Microelectronics, WM8351GEB/V Datasheet - Page 76

• Manufacturer Part Number: WM8351GEB/V
• Description: Audio CODECs Audio CODEC plus pwr management
• Manufacturer: Wolfson Microelectronics

Specifications of WM8351GEB/V

• Number Of Adc Inputs: 2
• Number Of Dac Outputs: 2
• Conversion Rate: 48 KSPS
• Interface Type: Serial (2-Wire, 3-Wire, 4-Wire)
• Resolution: 12 bit
• Operating Supply Voltage: 3.7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: BGA
• Minimum Operating Temperature: - 25 C
• Number Of Channels: 2 ADC/2 DAC
• Supply Current: 260 uA
• Thd Plus Noise: - 83 dB
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 8
• No. Of Output Channels: 6
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 95dB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8351
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The volume ramp rate during soft mute and un-mute is controlled by the DAC_MUTERATE bit.
Ramp rates of fs/32 and fs/2 are selectable as shown
Table 33 DAC Soft-Mute Control
13.7.3
Digital de-emphasis can be applied to the DAC playback data (e.g. when the data comes from a CD
with pre-emphasis used in the recording). De-emphasis filtering is available for sample rates of
48kHz, 44.1kHz and 32kHz.
Table 34 DAC De-Emphasis Control
R48 (30h)
DAC Control
R58 (3Ah)
DAC Mute
R59 (3Bh)
DAC Mute
Volume
REGISTER
REGISTER
ADDRESS
ADDRESS
DAC DE-EMPHASIS
BIT
BIT
5:4
14
14
13
DEEMP [1:0]
DAC_MUTE
DAC_MUTEM
ODE
DAC_MUTER
ATE
LABEL
LABEL
DEFAULT
DEFAULT
00
1
0
0
De-Emphasis Control
11 = 48kHz sample rate
10 = 44.1kHz sample rate
01 = 32kHz sample rate
00 = No de-emphasis
DAC Mute
0 = disabled
1 = enabled
DAC Soft Mute Mode
0 = Disabling soft-mute
(DAC_MUTE=0) will cause the volume
to change immediately to the
DACL_VOL / DACR_VOL settings
1 = Disabling soft-mute
(DAC_MUTE=0) will cause the volume
to ramp up gradually to the DACL_VOL
/ DACR_VOL settings
DAC Soft Mute Ramp Rate
0 = Fast ramp (24kHz at fs=48k,
providing maximum delay of 10.7ms)
1 = Slow ramp (1.5kHz at fs=48k,
providing maximum delay of 171ms)
DESCRIPTION
DESCRIPTION
PD, March 2010, Rev 4.2
Production Data
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