STA538B datasheet(26/59 Pages) STMICROELECTRONICS

Part #	STA538B

Description	2 x 1.3 W class-D amplifier with analog or digital input 2.0 multichannel digital audio processor with FFX

PDF	59 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

26 / 59 page

Driver configuration

STA538

26/59

Driver configuration

A driver configuration is available that allows PWM commands to be used on an external

power device. For this purpose, the output serial audio interface is disabled and the

respective pins have an alternative name and new functionality, as shown in Table 17.

The driver configuration is selected with two programmable registers PWMINT1 = 0x93 and

PWMINT2 = 0x81 (see PWMINT1 and PWMINT2 on page 52).

7.1

I2S bypass

A configuration is available which allows the bypassing of the I2S input signal straight to the

I2S output signal.

This configuration is set using two programmable registers PWMINT1 = 0x93 and

PWMINT2 = 0x80 (see PWMINT1 and PWMINT2 on page 52).

Table 17.

Pin functionality in driver-configuration mode

Alternative pin name and functionality

BICLKO

PWM1A (external bridge PWM command for output 1A)

LRCLKO

PWM1B (external bridge PWM command for output 1B)

SDATAO

PWM2A (external bridge PWM command for output 2A)

CLKOUT

PWM2B (external bridge PWM command for output 2B)

POWERFAULT

EADP (external audio power-down signal)

STA538B Datasheet(PDF) 26 Page - STMicroelectronics