MAX9258A

可编程串行器/解串器,带有UART/I²C控制通道

内置控制通道的单链路串行器/解串器,理想用于数字视频系统


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说明

The MAX9257A serializer pairs with the MAX9258A deserializer to form a complete digital video serial link. The MAX9257A/MAX9258A feature programmable parallel data width, parallel clock frequency range, spread spectrum, and preemphasis. An integrated control channel transfers data bidirectionally at power-up during video blanking over the same differential pair used for video data. This feature eliminates the need for external CAN or LIN interface for diagnostics or programming. The clock is recovered from input serial data at MAX9258A, hence eliminating the need for an external reference clock.

The MAX9257A serializes 10, 12, 14, 16, and 18 bits with the addition of two encoding bits for AC-coupling. The MAX9258A deserializer links with the MAX9257A to deserialize a maximum of 20 (data + encoding) bits per pixel/parallel clock period for a maximum serial-data rate of 840Mbps. The word length can be adjusted to accommodate a higher pixel/parallel clock frequency. The pixel clock can vary from 5MHz to 70MHz, depending on the serial-word length. Enabling parity adds two parity bits to the serial word. The encoding bits reduce ISI and allow AC-coupling.

The MAX9258A receives programming instructions from the electronic control unit (ECU) during the control channel and transmits to the MAX9257A over the serial video link. The instructions can program or update the MAX9257A, MAX9258A, or an external peripheral device, such as a camera. The MAX9257A communicates with the peripheral device with I²C or UART.

The MAX9257A/MAX9258A operate from a +3.3V core supply and feature separate supplies for interfacing to +1.8V to +3.3V logic levels. These devices are available in 40-lead TQFN or 48-pin LQFP packages. These devices are specified over the -40°C to +105°C temperature range.

关键特性

  • 10/12/14/16/18-Bit Programmable Parallel Data Width
  • MAX9258A Does Not Require Reference Clock
  • Parity Protection for Video and Control Channels
  • Programmable Spread Spectrum
  • Programmable Rising or Falling Edge for HSYNC, VSYNC, and Clock
  • Up to 10 Remotely Programmable GPIO on MAX9257A
  • Automatic Resynchronization in Case of Loss of Lock
  • MAX9257A Parallel Clock Jitter Filter PLL with Bypass
  • DC-Balanced Coding Allows AC-Coupling
  • 5 Levels of Preemphasis for Up to 20m STP Cable Drive
  • Integrity Test Using On-Chip Programmable PRBS Generator and Checker
  • LVDS I/O Meet ISO 10605 ESD Protection (±10kV Contact and ±30kV Air Discharge)
  • LVDS I/O Meet IEC 61000-4-2 ESD Protection (±8kV Contact and ±20kV Air Discharge)
  • LVDS I/O Meet ±200V Machine Model ESD Protection
  • -40°C to +105°C Operating Temperature Range
  • Space-Saving, 40-Pin TQFN (5mm x 5mm) with Exposed Pad or 48-Pin LQFP Packages
  • +3.3V Core Supply and 1.8V to 3.3V I/O Supply

应用

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Part NumberSignal TypeSignal TypeFunctionsRxTxData Rates
(Mbps)
VSUPPLY
(V)
Package/PinsBudgetary
Price
RxTxSee Notes
MAX9257A LVCMOSLVDSSerializer1818403.3
LQFP/48
TQFN/40
$4.74 @1k
MAX9258A LVDSLVCMOSDeserializer118
LQFP/48
查看所有High-Speed Interconnect (Differential Signaling) (127)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX9257AEVKIT: MAX9257A和MAX9258A评估板
MAX9258AEVKIT: MAX9257A和MAX9258A评估板

CAD Symbols and Footprints

  • MAX9258AGCM/V+
  • MAX9258AGCM/V+T
  • MAX9258AGCM/V+TW
  • MAX9258AGCM/V+W
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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    类型 编号 标题
    评估板7516MAX9257AEVKIT MAX9257AMAX9258A评估板
    评估板7516MAX9258AEVKIT MAX9257AMAX9258A评估板