1FEATURES

• Digital Audio Serializer

• Flexible Digital Audio Inputs, supporting I2S

(Stereo) or TDM (Multi-Channel) Formats

• Coaxial or Single Differential Pair Interconnect

• High Speed Serial Output Interface

• Very Low Latency (<15μs)

• Bidirectional Control Interface Channel with

I2C-Compatible Serial Control Bus

• Supports up to 8 Stereo I2S or TDM Audio

Inputs

• Supports Audio System Clocks from 10MHz to

50MHz

• Single 1.8V Supply

• 1.8V or 3.3V I/O Interface

• 4/4 Dedicated General Purpose Inputs/Outputs

• AC-Coupled STP or Coaxial Cable up to 15m

• DC-Balanced & Scrambled Data w/ Embedded

Clock

• Automotive Grade Product: AEC-Q100 Grade 2

Qualified

• Temperature Range: -40°C to 105°C

• ISO 10605 and IEC 61000-4-2 ESD Compliant

APPLICATIONS

• Automotive Infotainment Systems

• Active Noise Cancellation Systems

• Distributed Multi-Channel Audio Systems

DESCRIPTION

The DS90UA101-Q1 Serializer, in conjunction with

the DS90UA102-Q1 Deserializer, provides a solution

for distribution of digital audio in multi-channel audio

systems. It transmits a high-speed serialized interface

with an embedded clock over a single shielded

twisted pair or coaxial cable. The serial bus scheme

supports high speed forward data transmission and

low speed bidirectional control channel over the link. Consolidation of digital audio, general-purpose IO,

and control signals over a single differential pair

reduces the interconnect size and weight, while also

reducing design challenges related to skew and system latency.

The DS90UA101-Q1 Serializer embeds the clock and level shifts the signals to high-speed low-voltage

differential signaling. The device serializes up to eight

digital audio data inputs, word/frame sync, bit clock,

and system clock.

Four dedicated general purpose input pins and four

general purpose output pins allow flexible

implementation of control and interrupt signals to and

from remote devices.