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TDA8421 Datasheet, PDF (4/26 Pages) NXP Semiconductors – Hi-fi stereo audio processor; I2C bus
Philips Semiconductors
Hi-fi stereo audio processor; I2C bus
PINNING
Product specification
TDA8421
Fig.2 Pinning diagram.
FUNCTIONAL DESCRIPTION
Input selector
The input to channel 1 (CH1) and channel 2 (CH2) is determined by the input selector. The selection is made from the
following AF input signals:
• IN1 L (pin 26); IN1 R (pin 28) or
• IN2 L (pin 1); IN2 R (pin 3)
Where IN1 is an internal input signal and IN2 an external input signal.
Mode selector
For each channel (CH1 and CH2) there is a mode selector which selects between stereo, sound A and sound B in the
event of bilingual transmission. Both mode selectors can be controlled independently.
May 1988
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