WM8973LGEFL/V Wolfson Microelectronics, WM8973LGEFL/V Datasheet - Page 17
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WM8973LGEFL/V
Manufacturer Part Number
WM8973LGEFL/V
Description
Audio CODECs Stereo Codec with H/P Spkr
Manufacturer
Wolfson Microelectronics
Datasheets
1.WM8973LGEFLV.pdf
(57 pages)
2.WM8973LGEFLV.pdf
(63 pages)
3.WM8973LGEFLV.pdf
(61 pages)
4.WM8973LGEFLV.pdf
(57 pages)
Specifications of WM8973LGEFL/V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
QFN-32
Minimum Operating Temperature
- 25 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Advanced Information
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DC MEASUREMENT
For DC measurements (for example, battery voltage monitoring), the input signal at the LINPUT1
and/or RINPUT1 pins can be taken directly into the respective ADC, bypassing both PGA and
microphone boost. The ADC output then becomes unsigned relative to AVDD, instead of being a
signed (two’s complement) number relative to VREF. Setting L/RDCM will override L/RINSEL. The
input range for dc measurement is AGND to AVDD.
Table 2 Input Software Control
Table 3 DC Measurement Select
Table 4 Differential Input Select
R32 (20h)
ADC Signal
Path Control
(Left)
R33 (21h)
ADC Signal
Path Control
(Right)
R31 (1Fh)
ADC input Mode
R31 (1Fh)
ADC Input Mode
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
7:6
5:4
7:6
5:4
BIT
BIT
BIT
5
4
8
LINSEL
LMICBOOST
RINSEL
RMICBOOST
RDCM
LDCM
DS
LABEL
LABEL
LABEL
00
00
00
00
0
0
0
DEFAULT
DEFAULT
DEFAULT
00 = LINPUT1
01 = LINPUT2
10 = LINPUT3
11 = L-R Differential (either LINPUT1-
Left Channel Microphone Gain Boost
00 = Boost off (bypassed)
01 = 13dB boost
10 = 20dB boost
11 = 29dB boost
Right Channel Input Select
00 = RINPUT1
01 = RINPUT2
10 = RINPUT3
11 = L-R Differential (either LINPUT1-
00 = Boost off (bypassed)
01 = 13dB boost
10 = 20dB boost
11 = 29dB boost
Right Channel DC Measurement
0 = Normal Operation, PGA Enabled
1 = Measure DC level on RINPUT1
Left Channel DC Measurement
0 = Normal Operation, PGA Enabled
1 = Measure DC level on LINPUT1
0: LINPUT1 - RINPUT1
1: LINPUT2 – RINPUT2
Left Channel Input Select
Right Channel Microphone Gain Boost
Differential input select
RINPUT1 or LINPUT2-RINPUT2,
selected by DS)
RINPUT1 or LINPUT2-RINPUT2,
selected by DS)
DESCRIPTION
DESCRIPTION
DESCRIPTION
AI Rev 3.2 July 2004
WM8973L
17