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STA306

Table 4. Interface format as a function of SAO bits.

3.5 Configuration Register F (address 05h)

The STA306 features a DDX processing mode that minimizes the amount of noise generated in frequency range

of AM radio. This mode is intended to be used when DDX is operating in a device with an AM tuner active. The

SNR of the DDX processing is reduced to ~83dB in this mode, which is still greater than the SNR of AM radio.

This output bit, on pin 51 of the device, is used to mute the DDX Power Devices for Power-Down.

3.6 Master Mute Register (address 06h)

SAO(2..0)

Interface Format

000

001

Left-Justified Data

010

Right-Justified 16-bit Data

011

Right-Justified 18-bit Data

100

Right-Justified 20-bit Data

101

Right-Justified 24-bit Data

BIT

R/W

RST

NAME

DESCRIPTION

6

R/W

0

SAOFB

Determines MSB or LSB first for all SAO formats;

0 – MSB First

1 – LSB First

BIT

D7

D6

D5

D4

D3

D2

D1

D0

NAME

EAPD

AME

COD

SID

PWMD

RST

00

0

0

0

BIT

R/W

RST

NAME

DESCRIPTION

0

R/W

0

PWMD

PWM Output Disable: 0 – PWM Output Normal

1- No PWM Output

1

R/W

0

SID

2

R/W

0

COD

Clock Output Disable: 0 – Clock Output Normal

1- No Clock Output

3

R/W

0

AME

AM Mode Enable : 0 – Normal DDX operation.

1 – AM reduction mode DDX operation.

BIT

R/W

RST

NAME

DESCRIPTION

7

R/W

0

EAPD

External Amplifier Power Down:

0 – External Power Stage Power Down Active

1 - Normal Operation

BIT

D7

D6

D5

D4

D3

D2

D1

D0

NAME

MMUTE

RST

0