A2B BUS FEATURES
Line topology
Single master, multiple slave
Up to 15 m between nodes and up to 40 m overall cable
length (see Table 9)
Communication over distance
Synchronous data
Multichannel I2S/TDM to I2S/TDM
Synchronous clock, phase aligned in all nodes
Low latency slave to slave communication
Control and status information I2C to I2C
GPIO and interrupt
Bus power or local power slave nodes
Configurable with SigmaStudio graphical software tool
AEC-Q100 qualified for automotive applications
A2B TRANSCEIVER FEATURES
Configurable A2B bus master or slave operation
I2C interface
8-bit to 32-bit multichannel I2S/TDM interface
Programmable I2S/TDM data rate
Up to 32 upstream and 32 downstream channels
PDM interface
Programmable PDM clock rate
Up to 4 high dynamic range microphone inputs
Simultaneous reception of I2S data with up to 4 PDM
microphones
Unique ID register for each transceiver
Crossover or straight-through cabling
Programmable settings to optimize EMC performance
APPLICATIONS
Audio communication link
Microphone arrays
Beamforming
Hands free and in car communication
Active and road noise cancellation
Audio/video conferencing systems