Digital cockpit processing unit

Products and reference designs

Digital cockpit processing unit

Block diagram

Overview

The digital cockpit processing unit (DCPU) is the heart of the integrated cockpit infotainment system. The unit integrates functions of the traditional head unit, cluster and head-up display (HUD) into a single controller. The DCPU generates video graphics to the remote cluster display, HUD, center stack display and multiple auxiliary displays, while processing inputs from cameras (rear and side), the surround-view system (SVS), HMI, radio tuners and in-vehicle connectivity. Our integrated circuits, reference designs and products enable you efficiently design DPCU systems and decrease development time.

Design requirements

Digital cockpit processing unit designs require:

  • Support for multiple high-bandwidth video and data links.
  • Efficient power management of high-performance SoC.
  • High-speed signal design in a mixed-signal environment.
  • Integration and reduced design complexity to achieve high functionality in small spaces.
  • Balance meeting EMI requirements with performance.

Block diagram

Find products and reference designs for your system.

Digital cockpit processing unit

Multiple displays (CID, cluster, HUD and more) Multiple displays(CID, cluster, HUD and more) Applications processor Applications processor MPU MPU Memory subsystem Memory subsystem Video accelerator Videoaccelerator Applications processor (AP) Applications processor (AP) Non-volatile memory Non-volatile memory DDR memory termination DDR memory termination DDR memory DDR memory PCIe redriver PCIe redriver Vehicle interface Vehicle interface USB charger / USB MUX / USB HUB USB charger / USB MUX / USB HUB USB HUB USB HUB USB A/C or USBC PD controller USB A/C or USBC PD controller VBATT short & ESD protection VBATT short & ESD protection USB MUX & redriver USB MUX & redriver USB power switches USB power switches USB power buck-boost USB power buck-boost Audio DSP Audio DSP Audio DSP Audio DSP VBAT VBAT Clocking Clocking Clock generator Clock generator Clock buffers Clock buffers Clock oscillator Clock oscillator GPIO I2C GPIOI2C CSI/CPHY CSI/CPHY DP DSI HDMI OLDI DPDSIHDMIOLDI I2S TDM I2STDM I2S TDM I2STDM I2S TDM I2STDM USB2 USB3 USB2USB3 AVM, DMS,OMS AVM, DMS,OMS ESD protection ESD protection Ethernet Ethernet ESD protection ESD protection CAN CAN ESD protection ESD protection LIN LIN Off-battery power Off-battery power Wide Vin UV/OV voltage supervisor Wide Vin UV/OV voltage supervisor Wide Vin buck Wide Vin buck Wide Vin switch Wide Vinswitch Wide Vin LDO Wide Vin LDO Wide Vin buck-boost Wide Vin buck-boost Reverse battery protection Reverse battery protection Display interface Display interface Video serializer Video serializer ESD protection ESD protection Video serializer Video serializer ESD protection ESD protection Camera interface Camera interface ESD ESD ESD ESD Deserializer Deserializer Deserializer Deserializer High-side Switch High-side Switch GNSS, radio tuner, BT/WiFi GNSS, radio tuner, BT/WiFi Antenna LDO Antenna LDO Short-to-battery/ESD protection Short-to-battery/ESD protection GPS modem module GPS modem module AM/FM HD/DAB tuners AM/FMHD/DABtuners BT/WiFi BT/WiFi Analog/MIC inputs Analog/MIC inputs Audio ADC AudioADC ESD ESD Mid/Low VIn boost Mid/LowVIn boost Voltage reference Voltage reference CODEC/Amplifier CODEC/Amplifier Audio CODEC Audio CODEC Class-D amplifier Class-D amplifier System boot and monitoring System boot and monitoring Voltage sequencer Voltage sequencer Multi-channel SAR ADC Multi-channel SAR ADC Digital logic Digital logic Voltage translator Voltage translator Analog MUX/switch Analog MUX/switch Vehicle interface processor (VIP) MCU Vehicle interface processor(VIP)MCU I2C MUX/switch I2C MUX/switch Processing unit and system power Processing unit and system power Mid/low Vin boost Mid/low Vin boost Mid/low buck-boost Mid/lowbuck-boost Mid/low Vin buck Mid/low Vin buck Mid/low Vin LDO Mid/low Vin LDO Mid/low Vin PMIC Mid/low Vin PMIC Load switch Load switch Diagnostics/Monitoring Diagnostics/Monitoring Watchdog Watchdog Current sensor Current sensor Temperature sensor Temperature sensor Voltage supervisor Voltage supervisor

System boot & monitoring

close

The system/current monitoring circuit is an always-powered (but sometimes in sleep-mode) subsystem that controls the supplies of power, as well as observes the current and voltage of power rails to other circuits in the processing unit. The microcontroller is commonly called the vehicle interface processor (VIP). The commands typically come from the vehicle's ignition through the body control module (BCM).

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Amplifiers (12)
Comparators
  • TL331LV-Q1Automotive 1.65-V to 5.5-V, low-voltage single standard comparator with Pin 4 output
    Data sheet: PDF | HTML
  • TLV7041-Q1Automotive nano power comparator with open-drain output
    Data sheet: PDF | HTML
  • TLV3011B-Q1Automotive micropower comparator with integrated reference pin and open-drain output
    Data sheet: PDF | HTML
  • LM2903B-Q1Automotive, dual differential commodity comparator
    Data sheet: PDF | HTML
  • TLV7044-Q1Automotive nano power quad comparator with open-drain output
    Data sheet: PDF | HTML
  • TLV7032-Q1Automotive dual nanopower comparator with push-pull output
    Data sheet: PDF | HTML
Analog current-sense amplifiers
  • INA185-Q1AEC-Q100, 26-V, 350-kHz, bi-directional, high-precision current sense amplifier
    Data sheet: PDF | HTML
  • INA180-Q1AEC-Q100, 26V, 350kHz current sense amplifier
    Data sheet: PDF | HTML
  • INA293-Q1AEC-Q100, -4-V to 110-V, 1.3-MHz, ultra-precise current sense amplifier
    Data sheet: PDF | HTML
  • INA199-Q1AEC-Q100, 26V, bi-directional current sense amplifier
    Data sheet: PDF | HTML
  • INA168-Q1AEC-Q100, 2.7 to 60V, 800kHz Variable gain current sense amplifier
    Data sheet: PDF | HTML
  • INA186-Q1AEC-Q100, 40-V, bidirectional, high-precision current sense amplifier w/ picoamp input bias & ENABLE
    Data sheet: PDF | HTML
Data converters (6)
Precision ADCs
  • ADS7138-Q1Automotive, 8-channel, 140-kSPS, 12-bit analog-to-digital converter (ADC) with I2C, GPIOs and CRC
    Data sheet: PDF | HTML
  • ADS7142-Q1Automotive 2-channel 12-bit 140-kSPS I2C-compatible ADC with programmable threshold and host wake-up
    Data sheet: PDF | HTML
  • ADS1013-Q1Automotive 12-Bit 3.3kSPS 1-Ch Delta-Sigma ADC With Oscillator, Voltage Reference, and I2C
    Data sheet: PDF | HTML
  • ADS1015-Q1Automotive 12-bit, 3.3-kSPS, 4-ch, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C
    Data sheet: PDF | HTML
  • ADS1118-Q1Automotive 16-bit, 860-SPS, 4-ch, delta-sigma ADC with PGA, oscillator, VREF, temp sensor and SPI
    Data sheet: PDF | HTML
  • ADS78308-Bit, 8-Channel Sampling A/D Converter with I2C Interface
    Data sheet: PDF | HTML
Power management (11)
Sequencers
  • TPS38700-Q1Automotive power-supply sequencer with I²C support for up to 12 channels
    Data sheet: PDF | HTML
  • LM38803 Rail Simple Power Sequencer with Fixed Time Delay
    Data sheet: PDF | HTML
Series voltage references
  • REF35-Q1Automotive, 650-nA quiescent current, 15-ppm/°C drift, ultra-low-power precision voltage reference
    Data sheet: PDF | HTML
  • REF34-Q1Automotive, low-drift, low-power, small-footprint series voltage reference
    Data sheet: PDF | HTML
  • LM4128-Q1Automotive 0.1% 75-ppm/°C SOT-23 precision micropower series voltage reference shutdown enable pin
    Data sheet: PDF | HTML
Shunt voltage references
  • TL431LI-Q1Automotive, adjustable, precision shunt regulator with optimized reference current
    Data sheet: PDF | HTML
  • ATL431LI-Q1Automotive, high-bandwidth, low-IQ programmable shunt regulator (pinout: KRA)
    Data sheet: PDF | HTML
  • TL432-Q1Automotive adjustable precision shunt regulator (pin layout: RKA)
    Data sheet: PDF | HTML
  • TL431-Q1Automotive adjustable precision shunt regulator (pin layout: KRA)
    Data sheet: PDF | HTML
  • TLVH431A-Q1Automotive, low-voltage adjustable precision shunt regulator
    Data sheet: PDF | HTML
  • LM4040-N-Q1Automotive, 100-ppm/°C precision micropower shunt voltage reference
    Data sheet: PDF | HTML
Microcontrollers (MCUs) & processors (4)
Arm Cortex-M0+ MCUs
  • MSPM0L1228-Q1Automotive 32MHz Arm® Cortex®-M0+ MCU with 256KB dual-bank flash, 32KB SRAM, 12-bit ADC, COMP, VB
    Data sheet: PDF | HTML
  • MSPM0G3507-Q1Automotive 80MHz Arm® Cortex®-M0+ MCU with 128KB flash 32KB SRAM ADC, DAC, COMP, OPA, CAN-FD, MATHAC
    Data sheet: PDF | HTML
  • MSPM0L122732MHz Arm® Cortex®-M0+ MCU with 128KB dual-bank flash, 32KB SRAM, 12-bit ADC, COMP, VBAT, PSA-L1<
    Data sheet: PDF | HTML
  • MSPM0C110324MHz Arm® Cortex®-M0+ MCU with 8KB flash, 1KB SRAM, 12-bit ADC
    Data sheet: PDF | HTML
Sensors (7)
Digital temperature sensors
  • TMP451-Q1Automotive 1.7-V remote and local temp sensor with N-factor, filtering and series-R correction
    Data sheet: PDF | HTML
  • TMP75B-Q1Automotive, 1.4V-capable temperature sensor with I2C/SMBus interface in LM75 pinout
    Data sheet: PDF | HTML
  • TMP411-Q1Automotive, remote and local temperature sensor with N-factor and series resistance correction
    Data sheet: PDF | HTML
  • TMP75-Q1Automotive Temp Sensor with I2C/SMBus Interface in Industry Standard LM75 Form Factor & Pinout
    Data sheet: PDF | HTML
  • TMP112-Q1Automotive ±0.5°C 1.4V to 3.6V digital temperature sensor with I2C/SMBus in 2.56mm2 package
    Data sheet: PDF | HTML
  • TMP422-Q1AEC-Q100 Automotive 2Ch Remote Temperature Sensor
    Data sheet: PDF | HTML
Analog temperature sensors
  • LM20±1.5°C Analog Output Temperature Sensor
    Data sheet: PDF | HTML
Interface (1)
RS-485 & RS-422 transceivers
  • SN65LBC179Low-Power Differential Line Driver And Receiver Pair
    Data sheet: PDF | HTML

    Technical documentation

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    Type Title Date
    Application note EMI Reduction Technique, Dual Random Spread Spectrum (Rev. A) 31 Oct 2022
    Technical article Creating an immersive automotive audio experience with higher output power and Cla PDF | HTML 31 May 2023
    Application note Six System Architectures With Robust Reverse Battery Protection 30 Apr 2020
    Circuit design Non-inverting microphone pre-amplifier circuit (Rev. A) PDF | HTML 26 Sep 2024
    Application note PCM6xx0-Q1 Use-Case Scenarios in Automotive Audio Applications (Rev. A) PDF | HTML 26 May 2022
    Application note Sending Power Over Coax in FPD-Link Designs (Rev. A) PDF | HTML 25 Jan 2024
    White paper Alternate Mode for USB Type-C™: Going Beyond USB 21 Oct 2016
    Application note EMI 감소 기법, 듀얼 랜덤 확산 스펙트럼 (Rev. A) PDF | HTML 21 Nov 2022
    Technical article 4 audio trends transforming the automotive industry PDF | HTML 20 Jul 2023
    White paper A Primer on USB Type-C and Power Delivery Applications and Requirements (Rev. B) PDF | HTML 19 May 2022
    User guide Single-Supply Electret Microphone Preamplifier Reference Design 18 Feb 2015
    White paper Automotive Audio Design Considerations to Minimize Amplifier Size & Thermal Load 15 Oct 2019
    White paper Designing a Power Supply for a Safety MCU to Meet Functional Safety ASIL B PDF | HTML 15 Nov 2023
    White paper Designing infotainment systems that are interactive not distractive 15 Mar 2019
    Technical article What are the advantages of an automotive temperature sensor IC compared to an NTC? PDF | HTML 15 Jun 2023
    Technical article 3 ways to drive multiple displays in an integrated digital cockpit with FPD-Link I PDF | HTML 14 Jun 2023
    Technical article There are more ways than you think to reduce conducted EMI PDF | HTML 14 Aug 2023
    Technical article Why you should use a Class-D audio amplifier in your automotive infotainment syste PDF | HTML 11 Sep 2023
    Application note Achieving Low IQ Voltage Supervision in Automotive, Wide-Vin Applications 11 May 2022
    Application note Implementing Voltage References and Supervisors Into Your Traction Inverter Desi 11 May 2022
    Application note Basics of Ideal Diodes (Rev. B) PDF | HTML 11 May 2022
    Application note Low Voltage Translation for SPI, UART, RGMII, JTAG Interfaces (Rev. B) PDF | HTML 11 May 2022
    Application note Common Applications of Wide VIN Overvoltage and Undervoltage Supervisors PDF | HTML 10 Apr 2025

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