STA309A datasheet(30/67 Pages) STMICROELECTRONICS

30 / 67 page

Registers

STA309A

30/67

Doc ID 13855 Rev 4

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.

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 30.

PSL bit

Bit

RST

Name

Description

PSL

Postscale link:

0: each channel uses individual postscale value

1: each channel uses channel 1 postscale value

Table 31.

BQL bit

Bit

RST

Name

Description

4RW

BQL

Biquad link:

0: each channel uses coefficient values

1: each channel uses channel 1 coefficient values

Table 32.

PWMS bits

Bit

RST

Name

Description

7:5

PWMS[2:0]

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)

STA309A Datasheet(PDF) 30 Page - STMicroelectronics

STA309A Datasheet(HTML) 30 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

Datasheet Descarga

Enlace URL