The reverse channel in serializer/deserializer pairs can be susceptible to low frequency noise especially when using Power Over Coax. The first thing to check should be the I2C bitrate speed and confirm the correct addresses are being used. I2C Communications…

Q. Are there any Software-based Serialization solutions to be used with Maxim Deserializers? A. The GMSL serializer and deserializer can only work as a pair. Because the serialization scrambles the input data and then add 8b/10b coding on top of it before…

The combined impedance of the small inductors (L1/330nH and L2/6.8uH) is used to block the high-frequency forward video signal, 10MHz to 750MHz. The big inductor (L3/100uH) impedance is used for low frequency reverse channel operating band, around 600k…

For a GMSL connection a Pixel Clock is required to send video data over the link. On previous Maxim boards PCLK could be connected separately from the video data but the HDMI connection provides PCLK and so source video is necessary to LOCK the Serializer…

Answer: The MAXCAMOV10640# is a camera solution that uses the MAX9271 serializer and the OV10640 image sensor. The MAX96705 is pin compatible with the MAX9271, so the MAXCAMOV10640# schematic can be applied to the MAX96705 as well.

Q. What PRBS type do I use for the MAX96705 (serializer) and the MAX96706 (deserialzer)? A. For these two parts you should use the default PRBS test as indicated in the data sheet. For these two parts the default PRBS Type is the MAX9271–MAX9273 PRBS…

The recommended capacitor value is 0.22uF, 50V, 0603 case size. The evaluation kit uses TDK part number C1608X7R1H224K080. Refer to the MAX96705 datasheet, page 80, section " AC-Coupling Capacitors " for more information about the capacitor selection…

Maxim does not have any products for CSI-1, all Maxim GMSL products will always be CSI-2.

12-bit monochrome video data includes 12 bits of data + HS+VS+DE = 15 parallel into a GMSL device like the MAX9275, per sample. So, BWS = 0 (24-bit mode) configuration allows a pixel clock frequency up to 104MHz. Any unused inputs will be internally pulled…

Yes, the remote side I2C bus can run at a different speed than the local side. In a GMSL system, the controller is connected to the local device, while the coax/STP cable connects to the remote device. The remote side does not care about the I2C data…

All Maxim GMSL-1 serializers and deserializers (SerDes) are compatible with each other. Our SerDes parts are typically mentioned together (e.g. MAX96705 and MAX96706), but these pairings are only a suggestion, not a mandate. However, there are some limitations…

Yes, and the same can be said for the other sync signal pins, DOUT18/HS and DOUT20/DE. There are some register settings that must be set properly before it is possible to get parallel data output from these pins. All tracking, filtering, and inversion…

There is an error in the datasheet (Document number 19-8248; Rev 1; 3/17, Page 47, ewm(0x13)BITFIELD for EWM_MIN_THR). The EWM_MIN_THR can have a value from 0 (disabled) to 31. The equation should be: EWM_MIN_THR/32 * 100%. For example, a value of…

图像分辨率对应的同轴线或双绞线信号传输速率为： （行像素 x 列像素） /2 x 每秒场数 x 1.25 x 30 （ 24-bit 模式） （行像素 x 列像素） /2 x 每秒场数 x 1.25 x 40 （ 32-bit 模式） 对于1280 P ，每秒 30 场的摄像头，同轴线或双绞线传输的最大速率为： （ 1280x1080 ） / 2 x 30 x 1.25 x 30= 777.6Mbps （ 24-bit 模式）， 或 （ 1280x1080 ） / 2 x 30 x 1.25 x…

In a MAX9275 application that does not require digital audio transmission, SD can be used as an additional parallel input. Note that SCK and WS cannot be used as additional parallel inputs. For this configuration, set AUDIOEN = 0 in both serializer and…

Yes, the MAX96706 line-fault monitors can be disabled in register 0x08, bits 7 and 6. If you wish to keep the line-fault monitors disabled permanently, the LMN0 and LMN1 pins can be left unconnected. The same applies for all Maxim GMSL SerDes parts that…

Double mode (DBL) allows for the serializer to load a GMSL data packet with two half-width serial words instead of one whole-width one. Maxim GMSL parts have three different bus widths: 24, 27, and 32 bits. How the bits are allocated depends on a few…

Some of Maxim serializers and deserializers have a built-in pseudorandom binary sequence (PRBS) generator and receiver for bit error rate (BER) testing on a GMSL link. The serializer generates PRBS data and the deserializer decodes the data and checks…

All Maxim Gigabit Multimedia Serial Link (GMSL) parts are compatible with each other. However, there are some constraints. If a serializer or deserializer has a feature that its companion does not, just disable that feature. For example, the MAX9275 does…

MAX9277的oLDI的位分配.pdf图16（第31页）是位分配，与OpenLDI规范的不同图5-5（第20页）。 ********************************************************************************************* MAX9277第31页的位分配与OpenLDI规范兼容。 上面的数据是VESA格式的，与OpenLDI规范的图5-5相同。 位于下方的数据为OpenLDI规范表5-2中的24位视频数据的位映射…

如果没有时钟输入到MAX9271，则需要将0X0D设置为0xB6,然后设置CLINKEN

In general the answer is yes. Now read on. The MAX9217/MAX9218 require the DE (Data Enable) signal to toggle at least every 20,000 PCLKs (in practice it toggles every line) for correct operation. If DE does not toggle, video will not be transmitted correctly…

The MAX9291 serializer and the MAX9288 deserializer are compatible with each other. The serializer datasheet has a detailed explanation for passing digital data into the packets sent over the high-speed GMSL1 link, and the deserializer has a detailed…

要求同轴线对高频信号的损耗小，阻抗有较好的控制。如果同轴线高频信号损耗大，会影响信号眼图和最大传输距离。

最直观的方式是测量 MAX9271 的输出信号的波形。但很多客户没有测高速信号所用的示波器。用常见的几十 ~ 几百兆带宽的示波器也可大致判断出 MAX9271 是否正常工作：测量 MAX9271 输出端（在 AC 耦合电容之前）的共模电压，正常工作时的共模电压在 1.1V ~ 1.56V 之间，典型值在 1.4V 。如果测量到的共模电压在几百毫伏以下，基本可以判断芯片没有正常工作。