Overview

Features and Benefits

  • Ideal for High-Definition Video Applications
    • HDMI 1.4a input with Integrated Input Equalizer, DDC, and Input Termination
    • Drives Low-Cost 50Ω Coax Cable and FAKRA Connectors or 100Ω STP Cable
    • 104MHz High-Bandwidth Mode Supports 1920 × 720p/60Hz Display with 24-Bit Color
    • Serializer Pre/Deemphasis Allows 15m Cable at Full Speed
    • Up to 192kHz Sample Rate and 32-Bit Sample Depth for 7.1 Channel HD Audio
  • Multiple Data Rates for System Flexibility
    • Up to 3.12Gbps Serial-Bit Rate
    • 25MHz to 104MHz Pixel Clock
    • 9.6kbps to 1Mbps Control Channel in UART, Mixed UART/I²C, or I²C Mode with Clock-Stretch Capability
  • Reduces EMI and Shielding Requirements
    • Serial Output Programmable for 100mV to 500mV Single-Ended or 100mV to 400mV Differential
    • Programmable Spread Spectrum Reduces EMI
    • Tracks Spread Spectrum on Input
    • High-Immunity Mode for Maximum Control-Channel Noise Rejection
  • Peripheral Features for System Power-Up and Verification
    • Built-In PRBS Generator for BER Testing of the Serial Link
    • Programmable Choice of 9 Default Device Addresses
    • Dedicated “Up/Down” GPO for Touch-Screen Interrupt and Other Uses
    • Remote/Local Wake-Up from Sleep Mode
  • Meets Rigorous Automotive and Industrial Requirements
    • -40°C to +105°C Operating Temperature
    • ±8kV Contact and ±15kV Air ISO 10605 and IEC 61000-4-2 ESD Protection

Product Details

The MAX9291/MAX9293 GMSL serializers convert an HDMI input to a gigabit multimedia serial link (GMSL) output for transmission of video, audio, and control signals over 15m or more of 50Ω coax or 100Ω shielded twisted-pair (STP) cable. The MAX9293 has HDCP content protection, but is otherwise the same as the MAX9291. The serializer pairs with any GMSL deserializer capable of coax input. When programmed for STP output the serializer is backward compatible with any GMSL deserializer. The output amplitude is programmable 100mV to 500mV single-ended (coax) or 100mV to 400mV differential (STP).

The audio channel supports L-PCM I²S stereo and up to eight channels of L-PCM in TDM mode. Sample rates of 32kHz to 192kHz are supported with sample depth up to 32 bits.

The embedded control channel operates at 9.6kbps to 1Mbps in UART-to-UART and UART-to-I²C modes, and up to 1Mbps in I²C-to-I²C mode. Using the control channel, a µC can program serializer, deserializer, and peripheral device registers at any time, independent of video timing and manage HDCP operation (MAX9293). A GPO output supports touch-screen controller interrupt requests from the remote end of the link.

For use with longer cables, the serializers has programmable pre/deemphasis. Programmable spread spectrum is available on the serial output. The serial output meets ISO 10605 and IEC 61000-4-2 ESD standards. The core supply is 1.8V and 3.3V and the I/O supply is 1.7V to 3.6V. The package is a lead(Pb)-free, 56-pin, 8mm × 8mm TQFN/SWTQFN with exposed pad and 0.5mm lead pitch.

Applications

  • High-Resolution Automotive Navigation
  • Megapixel Camera Systems
  • Rear-Seat Infotainment

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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