ak4671 AKM Semiconductor, Inc., ak4671 Datasheet - Page 112

• Manufacturer Part Number: ak4671
• Description: Stereo Codec With Mic/rcv/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

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The AK4671 incorporates a 10-bit successive approximation resistor A/D converter for DC measurement.
The A/D converter output is a straight binary format as shown in
When PMSAD bit is set to “1”, 10bit ADC is powered-up. When the control register is read, A/D conversion is executed
and data is output. In case of 4-wire serial control mode, 10bit A/D data is output from 9th to 18th CCLK clock when 4th
bit is set to “1” just after R/W bit.
10bit ADC supports 3 kinds of analog input. A1-0 bits select the measurement modes.
MS0666-E-00
SAR 10bit ADC
Mode
0
1
2
3
Table 94. SAR ADC Measurement Mode (N/A: Not available)
(AVDD − 1.5LSB)
(AVDD − 2.5LSB)
A1
0
0
1
1
0.5LSB
Input Voltage
0
Table 93. Output Code
:
~
~
~
~
A0
0
1
0
1
AVDD
(AVDD − 1.5LSB)
1.5LSB
0.5LSB
- 112 -
Table
Input Channel
93:
SAIN1
SAIN2
SAIN3
N/A
Output Code
3FFH
3FEH
001H
000H
:
(default)
[AK4671]
2007/10