WM8351GEB/V Wolfson Microelectronics, WM8351GEB/V Datasheet - Page 129

• 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

Production Data
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The default output voltage for DC-DC Converters 1, 3 and 4 is set by writing to the DCn_VSEL
register bits. The ‘image’ voltage settings DCn_VIMG are alternate values that may be invoked when
the HIBERNATE software or hardware control is asserted as described above.
The DC-DC Converters 1, 3 and 4 are dynamically programmable - the output voltage may be
adjusted in software at any time. These Converters are buck (step-down) converters; their output
voltage can therefore be lower than the input voltage, but cannot be higher.
R180 (B4h) for
DC-DC1
R186 (BAh) for
DC-DC3
R189 (BDh) for
DC-DC4
R182 (B6h) for
DC-DC1
R188 (BCh) for
DC-DC3
R191 (BFh) for
DC-DC4
Note: n is either 1, 3 or 4 and identifies the individual DC-DC converter
Table 73 Output Voltage Control for DC-DC Converters 1, 3 and 4
When the DC-DC Converters 1, 3 and 4 are disabled, the output can be set to float or else the
outputs can be actively discharged through internal resistors. This feature is controlled using the
register bits described in Table 74.
R180 (B4h) for
DC-DC1
R186 (BAh) for
DC-DC3
R189 (BDh) for
DC-DC4
Note: n is either 1, 3 or 4 and identifies the individual DC-DC converter
Table 74 Output Float Control for DC-DC Converters 1, 3 and 4
ADDRESS
ADDRESS
BIT
6:0
6:0
10
BIT
DCn_VSEL
[6:0]
DCn_VIMG
[6:0]
DCn_OPFLT
LABEL
LABEL
Dependant on
CONFIG[1:0]
000 0110
DEFAULT
DEFAULT
settings
0
Enable discharge of DC-DCn outputs
when DC-DCn is disabled
0 = Enabled - Output to be discharged
1 = Disabled - Output is left floating
DC-DCn Converter output voltage
settings in 25mV steps.
Maximum output = 3.4V.
110 0110 = 3.4V
110 0010 = 3.3V
101 0110 = 3.0V
100 1110 = 2.8V
……
010 0110 = 1.8V
000 1110 = 1.2V
000 0110 = 1.0V
000 0000 = 0.85V
DC-DCn Converter output image voltage
settings in 25mv steps.
Maximum output = 3.4V.
110 0110 = 3.4V
110 0010 = 3.3V
101 0110 = 3.0V
100 1110 = 2.8V
……
010 0110 = 1.8V
000 1110 = 1.2V
000 0110 = 1.0V
000 0000 = 0.85V
DESCRIPTION
DESCRIPTION
PD, March 2010, Rev 4.2
WM8351
129