STA309A13TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STA309A13TR

Multi-channel digital audio processor with DDX®

STMicroelectronics 

Registers

STA309A

Table 30. PSL bit

Bit RW RST

Name

Description

3

RW

0

PSL

Postscale link:

0: each channel uses individual postscale value

1: each channel uses channel 1 postscale value

The Postscale function can be used for power-supply error correction. For multi-channel

applications running off the same power-supply, the postscale values can be linked to the

value of channel 1 for ease of use and update the values faster.

Table 31. BQL bit

Bit RW RST

Name

Description

4

RW

0

BQL

Biquad link:

0: each channel uses coefficient values

1: each channel uses channel 1 coefficient values

For ease of use, all channels can use the biquad coefficients loaded into the channel 1

coefficient RAM space by setting bit BQL to 1. Therefore, any EQ updates only have to be

performed once.

Table 32. PWMS bits

Bit RW RST

Name

7:5 RW

00 PWMS[2:0]

Description

PWM speed selection

Table 33. PWM output speed

PWMS[1:0]

PWM output speed

000

Normal speed (384 kHz) (all channels

001

Half-speed (192 kHz) (all channels

010

Double-speed (768 kHz) (all channels

011

Normal speed (channels 1-6), double-speed (channels 7-8)

100

Odd speed (341.3 kHz) (all channels)

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Doc ID 13855 Rev 4

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