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STA538 Datasheet(PDF) 26 Page - STMicroelectronics

No. de pieza STA538
Descripción Electrónicos  2 x 1.3 W class-D amplifier with analog or digital input 2.0 multichannel digital audio processor with FFX
PDF  59 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA538 Datasheet(HTML) 26 Page - STMicroelectronics

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Driver configuration
STA538
26/59
7
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
Pin
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)



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