STA333BW13TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

View to exact match

STA333BW13TR

2.1-channel 40-watt high-efficiency digital audio system Sound Terminal®

STMicroelectronics 

STA333BW

Register description

6.1.5

Configuration register E (addr 0x04)

D7

SVE

1

D6

ZCE

1

D5

DCCV

0

D4

PWMS

0

D3

AME

0

D2

NSBW

0

D1

MPC

1

Max power correction variable

Table 34. Max power correction variable

Bit R/W RST

Name

Description

0

R/W

0

MPCV

0: use standard MPC coefficient

1: use MPCC bits for MPC coefficient

D0

MPCV

0

Max power correction

Table 35. Max power correction

Bit R/W RST

Name

1

R/W

1

MPC

Description

0: function disabled

1: enables power bridge correction for THD

reduction near maximum power output.

Setting the MPC bit turns on special processing that corrects the STA333BW power device

at high power. This mode should lower the THD+N of a full FFX system at maximum power

output and slightly below. If enabled, MPC is operational in all output modes except tapered

(OM[1,0] = 01) and binary. When OCFG = 00, MPC has no effect on channels 3 and 4, the

line-out channels.

Noise-shaper bandwidth selection

Table 36. Noise-shaper bandwidth selection

Bit R/W RST

Name

2 R/W 0

NSBW

1: third-order NS

0: fourth-order NS

Description

AM mode enable

Table 37. AM mode enable

Bit R/W RST

Name

3 R/W 0

AME

Description

0: normal FFX operation.

1: AM reduction mode FFX operation

STA333BW features a FFX processing mode that minimizes the amount of noise generated

in frequency range of AM radio. This mode is intended for use when FFX is operating in a

device with an AM tuner active. The SNR of the FFX processing is reduced to approximately

83 dB in this mode, which is still greater than the SNR of AM radio.

Doc ID 13773 Rev 3

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