MAX9270 Datasheet, PDF (1/33 Pages) Maxim Integrated Products – Gigabit Multimedia Deserializer with Spread Spectrum and Full-Duplex Control Channel

19-5657; Rev 1; 1/11
Gigabit Multimedia Deserializer with Spread
Spectrum and Full-Duplex Control Channel
General Description
The MAX9270 deserializer uses Maxim’s gigabit
multimedia serial link (GMSL) technology. The device
functions the same as the MAX9260 deserializer without
an output enable (ENABLE) pin. Outputs are enabled
or disabled by a register bit. The deserializer pairs with
any GMSL serializer to form a complete digital serial link
for joint transmission of high-speed video, audio, and
control data.
The deserializer accepts a maximum serial payload
data rate of 2.5Gbps for a 15m shielded twisted-pair
(STP) cable. The 24-bit or 32-bit width parallel interface
operates up to a maximum bus clock of 104MHz or
78MHz, respectively. This serial link supports display
panels from QVGA (320 x 240) up to XGA (1280 x 768),
or dual-view WVGA (2 x 854 x 480).
The 24-bit or 32-bit mode handles 21 or 29 bits of data,
along with an I²S input, supporting 4- to 32-bit audio
word lengths and an 8kHz to 192kHz sample rate. The
embedded control channel forms a full-duplex, differen-
tial 100kbps to 1Mbps UART link between the serializer
and deserializer. The host electronic control unit (ECU)
or microcontroller (FC) resides either on the serializer (for
video display) or the deserializer (for image sensing). In
addition, the control channel enables ECU/FC control of
peripherals in the remote side of the serial link through
I²C (base mode) or a user-defined full-duplex UART
format (bypass mode).
The channel equalizer extends the link length and
enhances the link reliability. Spread spectrum is avail-
able to reduce EMI on the parallel output data signals.
The differential link complies with the ISO 10605 and IEC
61000-4-2 ESD-protection standards.
This device uses a 3.3V core supply and a 1.8V to 3.3V
I/O supply. The device is available in a 56-pin TQFN
package (8mm x 8mm x 0.75mm) with an exposed pad.
Electrical performance is guaranteed over the -40NC to
+105NC automotive temperature range.
Applications
High-Speed Serial-Data Transmission for Display
High-Speed Serial-Data Transmission for Image
Sensing
Automotive Navigation, Infotainment, and Image-
Sensing Systems
Features
S Pairs with Any GMSL Serializer
S 2.5Gbps Payload Rate, AC-Coupled Serial Link
with 8b/10b Line Coding
S 24-Bit or 32-Bit Programmable Parallel Output Bus
Supports Up to XGA (1280 x 768) or Dual-View
WVGA (2 x 854 x 480) Panels with 18-Bit or 24-Bit
Color
S 8.33MHz to 104MHz (24-Bit Bus) or 6.25MHz to
78MHz (32-Bit Bus) Parallel Data Rate
S Support Two/Three 10-Bit Camera Links at
104MHz/78MHz Maximum Pixel Clock
S 4-Bit to 32-Bit Word Length, 8kHz to 192kHz I²S
Audio Channel Supports High-Definition Audio
S Embedded Half-/Full-Duplex Bidirectional Control
Channel (100kbps to 1Mbps)
S Separate Interrupt Signal Supports Touch-Screen
Functions for Display Panels
S Remote-End I²C Master for Peripherals
S Line Equalizer Extends Link Length
S Programmable Spread Spectrum on the Parallel
Data Outputs Reduce EMI
S Does Not Require an External Clock
S Auto Data-Rate Detection Allows “On-The-Fly”
Data-Rate Change
S Built-In PRBS Checker for BER Testing
S ISO 10605 and IEC 61000-4-2 ESD Protection
S -40NC to +105NC Operating Temperature Range
S Patent Pending
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX9270GTN/V+ -40NC to +105NC 56 TQFN-EP*
/V denotes an automotive qualified part.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
Typical Applications Circuit appears at end of data sheet.
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