Introduction

The NS6122 serializer chip is compliant to Automotive Wired High-Speed Media Transmission (HSMT) standard. Pairing with a compatible HSMT deserializer, the NS6122 is used for transmission of forward video and bidirectional audio and control data for automotive displays applications. The NS6122 converts a single-oLDI (single-pixel mode) or dual-oLDI (dual-pixel mode) input to HSMT output, and transmits the output to the paired deserializer over a single or dual HSMT links. Each HSMT link operates at a fixed data rate up to 6.4Gbps in the forward direction and 100Mbps in the backward direction. The NS6122 supports 16-meter Coaxial cable or 10-meter STP cable. The NS6122 is AEC-Q100 Grade 2 certified with automotive temperature range of -40°C to +105°C, and compliant with ISO 10605 and IEC 61000-4-2 ESD standards.

The NS6122 is ISO 26262 ASIL-B certified and supports I2C and SPI control ports, flexible GPIO with trigger mode, constant latency mode and oversample mode, tunneled UART, forward and backward audio channels, a built-in ADC, temperature sensor, and an extensive set of diagnostics for functional safety.

Applications

·         High-resolution Automotive Navigation System

·         Central Information Display (CID)

·         Digital Instrument Clusters

·         Rear Seat Entertainment (RSE)

·         Head Units and HMI Modules

·         Rear View and Side Mirror Displays

Features

·         Single-oLDI or dual-oLDI input port

·         Configurable 18/24-bit RGB

·         Maximum pixel clock 170MHz (single-oLDI) or 340MHz (dual-oLDI)

·         Supports superframe unpacking capability

·         HSMT link for system and power flexibility

·         Supports two HSMT links

·         2.0, 3.2, 4.0, or 6.4Gbps forward-link rates per link

·         100Mbps backward-link rate per link

·         Robust communication in automotive environment

·         Backward channel adaptive equalization

·         RS-FEC for protection of forward video and bidirectional control data

·         Retransmission

·         Backward channel eye timing margin monitor for continuous link margin diagnosis

·         Digital audio with I2S and TDM interface

·         Supports forward-direction 7.1 HD audio and up to 192kHz sample rate

·         Supports backward-direction 8 channels at 48kHz sample rate or 2 channels at 192kHz sample rate

·         Supports bulk and tunneling modes I2C (master up to 833Kbps, slave up to 1Mbps)

·         Supports SPI (master/slave up to 50Mbps), UART (Tx/Rx), GPIO, and interrupt for touch-screen and other use cases

·         Functional safety

·         AEC Q100 Grade-2 and ISO 26262 ASIL-B

·         CRC protection of control-channel data (I2C, SPI)

·          Video data error correction and retransmission

·         Video watermark and test pattern generation

·         Supports line fault detection and voltage monitor

·         Programmble spread spectrum for EMI reduction

·         9mm x 9mm 64-pin QFN package