LC7851E Overview
Key Features
- QPSK demodulator, PCM decoder, digital filters, D/A converters, and operational amplifiers integrated on a single chip
- CPU interface using an I2C bus
- Interface circuits for CORTEC and SkyPort descramblers
- Ten to 14 bit expansion of audio data during A mode broadcasts
- Data protection using majority control for the upper bits of the audio data during B mode broadcasts
- Full complement of muting functions
- Audio suppression provided (bit 16 of the postmajority decision control bits)
- Non-audio signal suppression (bits 2 to 5 of the postmajority decision control bits)
- Forced muting
- Muting when not synchronized
