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APIX2 Multichannel SerDes with 3 Gbit/s for Video, Audio, Data and Ethernet with Daisy Chain Support


INAP375R APIX2 Receiver

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User Manual

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The INAP375R together with an APIX2 transmitter offers the next generation high speed digital serial link for DISPLAY and CAMERA applications. It provides a DC-balanced, AC coupled low latency, point-to-point link over shielded twisted pair (STP) cables. Its scalable physical layer provides bandwidth of up to 3 GBit/s at lowest EMI. The INAP375R supports popular automotive displays with video resolutions such as 1600x600 pixels and refresh rates of up to 100Hz. The device offers a flexible video interface, configurable to handle 1 or 2 independent video streams, with output interfaces such as parallel RGB (1x24 Bit or 2x10 Bit) or openLDI (“LVDS”) e.g. 2x (4 lanes + clock). Software adjustable driver characteristics at the transmitter, combined with the powerful adaptive equalizer and configurable operating modes allow the transmission of 3 GBit/s at distances of up to 12m over a single pair of wires. In addition to the video transmission the INAP375R provides completely independent Full Duplex Communication channels. Using the internal AShell protocol, data transfers are protected by error detection and retransmission mechanisms. Offering a Media Independent Interface (MII), the INAP375R can be directly connected to an ethernet Media Access Controller, offering full network capabilities through the APIX link.
Additionally, the link is optimized to carry low latency GPIO signals for reset or synchronization purposes. The inbuilt audio path allows synchronous transmission of up to 4 stereo audio channels, with highly precise clock regeneration at the receiver for high-end rear-seat entertainment applications.


  • Backwards compatibility with APIX1
  • 500 MBit/s, 1 GBit/s and 3 GBit/s sustained downstream link bandwidth for video data rates up to 2591 MBit/s
  • up to 187.5 MBit/s upstream link bandwidth
  • Supports 2 independent video streams
  • Configurable video interface
    – Parallel RGB (10,12,18 or 24 Bit)
    – OpenLDI compliant LVDS interface[1] with Single Pixel Format (18 or 24 Bit)
    – Parallel Bulk Data Mode (10,12,18,24 Bit)
  • Video resolutions up to HD resolutions
  • Configurable full duplex communication channel for up to 2 receivers (daisy chain)
  • Daisy chain output to a 2nd receiver
  • Media Independent Interface
  • SPI data interfaces
  • I²C Master interface
  • GPIOs for direct signalling and camera synchronization support
  • Embedded AShell
  • I²S Audio interface
    - supports 16/24/32 Bit word length
    - supports up to 192kHz sampling
    - TDM support for up to 8 channels
  • Diagnostic Features:
    - Built-In PRBS Checker
    - Embedded diagnostics
  • Up to 12m distance at 3 GBit/s


  • Central Information Displays
  • Round View Camera Systems
  • Head up Displays
  • Cluster Displays
  • Rear-Seat Entertainment Systems
  • Stereo Camera Systems
  • Rear View Camera Systems
  • Sensor Fusion Systems
  • Automotive Driver Assistance

INAP375R(AQ) Block Diagram

INAP375R Application

Soft- and Hardware Tools

Tool Description Order ID:
INAP375R Receiver Board INAP375R APIX2 Receiver main board, Power Supply, 2m USB cable, Documentation, LVDS Display interface APIX2_ADK_RX
INAP375R Receiver Board

INAP375R APIX2 Receiver main board, Power Supply, 2m USB cable, Documentation, HDMI Interface

INAP375R Extender Board APIX2 Receiver Extender Board, 5x FFC cable APIX2_ADK_RX_EXT
INAP375T/R Ethernet Board APIX2 Ethernet Extender Board for Transmitter and Receiver Main board, 5x FFC cable, 2m Ethernet cable APIX2_ADK_ETH
APICO Software Tool to configure APIX2 devices, configuration wizard, dependency check, plausibility check, status registers, etc. download page
IBIS Model IBIS Model of INAP375R download

Landing patterns

Format zip
Allegro 375R    375RAQ
Altium 375R    375RAQ
PADS 375R    375RAQ
BXL 375R    375RAQ


Application Notes

Application Notes Description Download
AN202 POA: Power over APIX Login or register
AN203 APIX2 Transfer Channel Requirements Login or register
AN204 APIX2 Physical Layer Compliance Login or register
AN206 INAP3xxT/R Diagnostic Features Login or register
AN207 APIX2 - Transmitter Line Driver Setup Login or register
AN208 APIX2 Daisy Chain Setup Login or register

ordering information

part number package packaging
temp status

LQFP 14x14 mm

landing pattern

-40°C-105°C active

LQFP 14x14 mm

landing pattern

-40°C-105°C active

AQFN 9x9 mm

landing pattern

-40°C-85°C active

AQFN 9x9 mm

landing pattern