MT92303 Zarlink Semiconductor, MT92303 Datasheet - Page 20

• Manufacturer Part Number: MT92303
• Manufacturer: Zarlink Semiconductor

MT92303
20
0
1
2
3
4
5
6
7
Address 10h
Read/Write
EB [3:0]
EN_AUDIO_0
EN_AUDIO_1
EN_AUDIO_2
EN_AUDIO_3
0000
0001
0010
0011
0100
0101
0110
0111
EN_VREF
EN_TX0
EN_TX1
-
Enable Audio Interfaces (RX ‘analog’ circuitry, Electret bias, Microphone detect,
Auxtone)
Enable Voltage Reference (needed for all analog functions)
Enable TX ‘analog’ circuitry. Also initiates the ‘TX offset correction’ routine.
Important Note: There are several requirements which must be met before this
routine can operate correctly. See explanation in section ‘Automatic DC Offset
Cancellation (TX)’
UNUSED (Don’t care)
Bias V
0.00
0.17
0.34
0.50
0.67
0.84
1.01
1.18
Audio Interface: Enable (Register x1)
Electret Bias
EB [3:0]
1000
1001
1010
1011
1100
1101
1110
1111
Preliminary Information
Bias V
1.34
1.51
1.68
1.85
2.02
2.18
2.35
2.52