EVALUATION KIT AVAILABLE
MAX9291/MAX9293
3.12Gbps GMSL Serializers
for Coax or STP Output and HDMI Input
General Description
Benefits and Features
● Ideal for High-Definition Video Applications
• HDMI 1.4a Input with Integrated Input Equalizer,
DDC, and Input Termination
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 serializers pair with any GMSL
deserializer capable of coax input. When programmed
for STP output, the serializers are backward compatible
with any GMSL deserializer. The output amplitude is
programmable 100mV to 500mV single-ended (coax) or
100mV to 400mV differential (STP).
• Drives Low-Cost 50Ω Coax Cable and FAKRA
Connectors or 100Ω STP Cable
• 104MHz High-Bandwidth Mode Supports
1920 x 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
2
The audio channel supports L-PCM I S stereo and up to
• 25MHz to 104MHz Pixel Clock
eight channels of L-PCM in TDM mode. Sample rates of
32kHz to 192kHz are supported with sample depth up to
32 bits.
• 9.6kbps to 1Mbps Control Channel in UART, Mixed
2
2
UART/I C, or I C 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
The embedded control channel operates at 9.6kbps
2
to 1Mbps in UART-to-UART and UART-to-I C modes,
2
2
and up to 1Mbps in I C-to-I C 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.
• High-Immunity Mode for Maximum Control-
Channel Noise Rejection
● Peripheral Features for System Power-Up and
Verification
For use with longer cables, the serializers have
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 x 8mm TQFN/SWTQFN with exposed pad
and 0.5mm lead pitch.
• 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
Applications
● High-Resolution Automotive Navigation
● Rear-Seat Infotainment
• -40°C to +105°C Operating Temperature
• ±8kV Contact and ±15kV Air ISO 10605 and
IEC 61000-4-2 ESD Protection
● Megapixel Camera Systems
Ordering Information appears at end of data sheet.
19-7544; Rev 3; 2/18
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