STA309A datasheet(31/71 Pages) STMICROELECTRONICS

31 / 71 page

DocID13855 Rev 6

31/71

STA309A

Registers

7.2.7

Configuration register G (0x06)

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.

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.

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

Table 34. Register G bit definitions

Bit

RST

Name

Description

PWMD

PWM output disable:

0: PWM output normal

1: no PWM output

SID

Serial interface (I2S out) disable:

0: I2S output normal

1: no I2S output

COD

Clock output disable:

0: clock output normal

1: no clock output

AME

AM mode enable:

0: normal DDX operation.

1: AM reduction mode DDX operation.

Table 35. AM2E bit

Bit

RST

Name

Description

AM2E

AM2 mode enable:

0: normal DDX operation.

1: AM2 reduction mode DDX operation.

Table 36. HPE bit

Bit

RST

Name

Description

HPE

DDX headphone enable:

0: channels 7 and 8 normal DDX operation

1: channels 7 and 8 headphone operation

STA309A Datasheet(PDF) 31 Page - STMicroelectronics

STA309A Datasheet(HTML) 31 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71

Datasheet Download

Link URL