CH7308B

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Features


  • Single/Dual LVDS Transmitter up to 165Mpixels/s

  • Support resolutions up to 1600x1200 (1920x1200 with reduced blanking)

  • LVDS low jitter PLL accepts spread spectrum input

  • LVDS 18-bit and 24-bit outputs

  • 2D dither engine

  • Panel protection and power sequencing

  • High-speed SDVO* serial (1G~2Gbps) AC-coupled differential RGB inputs

  • Low voltage interface support to graphics device

  • Programmable power management

  • Fully programmable through serial port

  • Configuration through OpCodes*

  • Complete Windows driver support

  • Boundary scan support

  • Offered in a 64-pin LQFP package






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* Intel Proprietary

Describe

The CH7308B is a display controller device, which accepts digital graphics input signals, upscales, encodes, and transmits data through an LVDS transmitter to a LCD panel. This device accepts one channel of RGB data over three pairs of serial data ports.

The LVDS Transmitter includes a low jitter PLL to generate a high frequency serialized clock and all circuitry required to upscale, encode, serialize and transmit data. The CH7308B supports a maximum pixel rate of 165MP/s.

The LVDS transmitter includes a panel fitting up-scaler and a programmable dither function to support 18-bit LCD panels. Data is encoded into commonly used formats, including those specified in the OpenLDI and SPWG specifications. Serialized data is outputted on three to eight differential channels.

Structure diagram

Data sheet

Application Desc


  •   PCB Layout and Design Considerations for CH7308 SDVO LVDS Transmitter, AN-83.pdf

  •   CH7308 LVDS Upscaler Coefficient Programming Guide, AN-90.pdf

  •   Setting the CH7308 EMI Reduction SSC Value in the VBT, AN-94.pdf

  •   Setting the CH7308 HSYNC width in the VBT, AN-95.pdf
  •   Refer to the AN-B037 for industrial products in detail

Technical Report

 Measurement of CH7308 Panel Power Sequencing, TB-49.pdf

Specifications

Input Interface SDVO

Output Interface LVDS

Audio Interface  No

Other features Scaler, Line Buffer

Package Type LQFP64

OrderInfo

Part Number Package Type Number of Pins Voltage Supply Temperature Grade

CH7308B-TF  Lead Free - LQFP642.5V & 3.3VCommercial / Automotive Grade 4

CH7308B-TF-I  Lead Free - LQFP642.5V & 3.3VIndustrial / Automotive Grade 3

CH7308B-TF-TR  Lead Free - LQFP in Tape & Reel642.5V & 3.3VCommercial / Automotive Grade 4CH7308B-TF-I-TR  Lead Free - LQFP in Tape & Reel642.5V & 3.3VIndustrial / Automotive Grade 3

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About Chrontel Overview Chrontel, headquartered in San Jose, California, is a privately-held company with over 130 employees worldwide. Incorporated in 1986, the company develops and markets mixed-signal integrated circuits for the PC, display and consumer mark...

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