本指南旨在帮助从最近退休的Zybo迁移到新的和改进的Zybo Z7。对于那些当前拥有或熟悉Zybo并且需要将现有材料移植到新平台的人来说，这将很有用。如果您只是在Zybo Z7上寻找完整的文档，请参考Zybo Z7参考手册。

We realized that with several minor updates to the ZYBO's design, we could greatly improve its capabilities as a video platform while adding only little cost. We decided to move forward with these changes, also making some additional improvements along the way. Whenever possible, we left the design unchanged in order to help make the migration from the ZYBO to this new platform, the Zybo Z7, easy for our customers. Here is a summary of the changes that were made:

• 用HDMI输入替换VGA输出端口
• Converted bidirectional HDMI port to output only for simplicity
• 修复了HDMI监视器后功率问题
• Added a MIPI CSI-2 capable Pcam port for attaching camera sensor modules
• 我ncreased processor speed to 667MHzand DDR speed to 1066MHz
• 从512增加了DDR容量MBto 1GB
• Changed DDR3 to DDR3L for lower power consumption
• 添加了RGB LED
• 使用较大的Zynq-7000加载的选项
• 由Digilent提供的能力修订的SDSOC平台

The figure below shows the ZYBO next to the two new Zybo Z7 product variants, the Zybo Z7-10 and the Zybo Z7-20.

The complete feature lists of these three products are arranged in the table below so that they can be easily compared.

从Zybo迁移到Zybo Z7时必须考虑以下内容：

The pin mappings of many components have changed. This is true even for some components that are present on both the Zybo Z7 and ZYBO. Any IP cores that are using board file interfaces will need to be re-targeted to the Zybo Z7. Also, any pin constraints found in XDC files will need to be replaced with updated pin constraints that take into account the new pin-out of the Zybo Z7. See section “Project Migration Tutorial” for instructions on how to do this with an existing ZYBO project.

For this reason, most pre-built bitstream files that target the ZYBO will not work on the Zybo Z7.

The input oscillator has changed from 50MHzto 33.3333MHz。Also, the Zybo Z7 uses different DDR memory. Both of these changes require the Zynq Processing System IP Core in Vivado to be reconfigured with different settings than were used on the ZYBO. See the section “Project Migration Tutorial” for an easy way to update an existing ZYBO block diagram to use the new Zybo Z7 settings.

For this reason, any binary files that target the ZYBO and make use of the processors (such as a BOOT.bin file) will not work on the Zybo Z7.

The Pmod ports found on the ZYBO and Zybo Z7-20 are equivalent, however the Zybo Z7-10 has one fewer high-speed Pmod port attached to the Zynq-7000's programmable logic. Specifically, it does not include Pmod JB. To migrate a design to the Zybo Z7-10 that uses Pmod JB, modify it to use Pmod JC or Pmod JD instead, which are also high-speed Pmod ports. If a design must use Pmod JB, it should be migrated to the Zybo Z7-20.

拆除VGA端口，为专用的HDMI端口和PCAM端口腾出空间。如果一个项目使用VGA输出，则有几个将其移植到Zybo Z7的选项。

1. 将设计修改为在HDMI TX端口上输出视频。最简单的方法是使用Digilent的RGB2DVI IP核心vivado-library IP Repo。该IP核心将转换该项目用于将VGA端口驱动到DVI信号的信号，该信号可以连接到HDMI TX端口。作为奖励，这将提高颜色深度至24位。
2. Purchase aPmod VGA并将其连接到Zybo Z7上的两个PMOD端口。这将在Zybo Z7上提供VGA输出端口，就像在Zybo上找到的那样。不利的一面是，与Zybo上的16位VGA相比，PMOD VGA仅具有12位颜色深度，因此需要修改项目以截断附加的颜色信号。有关如何与Zybo Z7一起使用PMOD VGA的示例Zybo Z7资源中心。

应修改使用Zybo上双向HDMI端口作为输出的项目，以使用Zybo Z7上HDMI TX端口附加的引脚。HDMI TX端口将与双向端口相同，但不再需要HDMI_OUT_EN信号来指示端口方向。

作为额外的改进，您不再需要断开任何附加的显示，以便为Zybo Z7提供动力。Zybo上存在的显示回电源问题已固定。

项目that were using the bidirectional HDMI port on the ZYBO as an input should be modified to use the pins attached to the HDMI RX port on the Zybo Z7. The HDMI RX port will function identically to the bidirectional port, except that the HDMI_OUT_EN signal is no longer needed to indicate the port direction.

Those who need to use the optional CEC pin on the HDMI RX port must migrate to the Zybo Z7-20. The CEC pin on the HDMI RX port is not connected to the Zynq on the Zybo Z7-10.

使用Zybo同时使用HDMI端口和VGA端口同时驱动两个显示器的设计将不再能够使用Zybo Z7上的视频端口（只有一个输出）。Digilent建议如果您的设计需要双重显示，则建议使用HDMI TX端口和Zybo Z7的PMOD VGA。有关更多信息，请参见“ HDMI端口更改”部分和“删除VGA”部分。

The Pcam connector can be used to attach MIPI CSI-2 based camera sensor modules to the Zybo Z7. This interface supports much lower latency and higher bandwidth than the onboard USB 2.0 connector. If your design uses a USB 2.0 camera, modifying it to use the Pcam port instead will improve performance.

SDSoC and the reVISION libraries make it possible to do FPGA accelerated video processing using openCV functions in an all C/C++ development environment. Digilent will be enabling this design flow on the Zybo Z7-20 by providing a reVISION capable SDSoC platform for it in the future. Those using the ZYBO for video processing (or that are interested in doing so) should consider if migrating a project into SDSoC will enable improvements. For more information on reVISION, see Xilinx'sreVISION Zone。

那些有兴趣使用修订的人应迁移到Zybo Z7-20。Zybo Z7-10没有足够的可编程逻辑资源来正确实现修订平台。

我f you would benefit from having more FPGA resources, you have the option to migrate to the Zybo Z7-20, which includes a much larger ZC7020 Zynq part. The process of migrating to the Zybo Z7-20 is no more difficult than migrating to the Zybo Z7-10, which has the same ZC7010 Zynq part as the ZYBO.

Basic video processing applications designed on the ZYBO or Zybo Z7-10 will often use most of the available resources in the programmable logic. For this reason the Zybo Z7-20 is recommended for those interested in video processing.

The Zybo Z7 doubles the memory capacity of the ZYBO to 1GB。Some designs may be able to benefit from this additional memory. This can often be useful in designs built on Embedded Linux (Petalinux).

Other improvements to the DDR will slightly increase available bandwidth and decrease power consumption.

The following procedure describes an easy method for porting an existing Vivado project from the ZYBO to the Zybo Z7. It was tested in Vivado 2017.2 and will likely work for other versions, though the steps and images may differ slightly. Note this guide expects previous experience with Vivado and Xilinx SDK.