STA308A datasheet(29/63 Pages) STMICROELECTRONICS

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STA308A

Registers

29/63

7.2.7

Configuration register G (0x06)

The STA308A 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.

The STA308A 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.

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.

MPCV

DCCV

HPE

AM2E

AME

COD

SID

PWMD

Bit

RST

Name

Description

0RW

PWMD

PWM output disable:

0: PWM output normal

1: no PWM output

1RW

SID

Serial interface (I2S out) disable:

0: I2S output normal

1: no I2S output

2RW

COD

Clock output disable:

0: clock output normal

1: no clock output

Bit

RST

Name

Description

3RW

AME

AM mode enable:

0: normal DDX operation.

1: AM reduction mode DDX operation.

Bit

RST

Name

Description

4RW

AM2E

AM2 mode enable:

0: normal DDX operation.

1: AM2 reduction mode DDX operation.

Bit

RST

Name

Description

5RW

HPE

DDX headphone enable:

0: channels 7 and 8 normal DDX operation

1: channels 7 and 8 headphone operation

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