STA309A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STA309A Datasheet PDF : 67 Pages
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STA309A
Registers
7.2.7
Configuration register G (0x06)
D7
MPCV
0
D6
DCCV
0
D5
HPE
0
D4
AM2E
0
D3
AME
0
D2
COD
0
D1
D0
SID
PWMD
0
0
Table 34. Register G bit definitions
Bit RW RST
Name
Description
0
RW
0
PWMD
1
RW
0
SID
2
RW
0
COD
3
RW
0
AME
PWM output disable:
0: PWM output normal
1: no PWM output
Serial interface (I2S out) disable:
0: I2S output normal
1: no I2S output
Clock output disable:
0: clock output normal
1: no clock output
AM mode enable:
0: normal DDX operation.
1: AM reduction mode DDX operation.
The STA309A features a DDX processing mode that minimizes the amount of noise
generated in frequency range of AM radio. This mode is intended for use when DDX is
operating in a device with an AM tuner active. The SNR of the DDX processing is reduced to
~83 dB in this mode, which is still greater than the SNR of AM radio.
Table 35. AM2E bit
Bit RW RST
Name
Description
4
RW
0
AM2E
AM2 mode enable:
0: normal DDX operation.
1: AM2 reduction mode DDX operation.
The STA309A features a 2 DDX processing modes that minimize the amount of noise
generated in frequency range of AM radio. This second mode is intended for use when DDX
is operating in a device with an AM tuner active. This mode eliminates the noise-shaper.
Table 36. HPE bit
Bit RW RST
Name
Description
5
RW
0
HPE
DDX headphone enable:
0: channels 7 and 8 normal DDX operation
1: channels 7 and 8 headphone operation
Channels 7 and 8 can be configured to be processed and output in such a manner that
headphones can be driven using and appropriate output device. This signal is a differential
3-wire drive called DDX Headphone.
Doc ID 13855 Rev 4
31/67
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