The Transceiver Configuration wizard enables the IPs that are associated with transceiver interface in the GTY sheet. It provides a simplified method of filling in GTY sheets in the XPE spreadsheet. When you configure a transceiver interface using the wizard, rows are added to the IP Manager sheet and to the GTY sheet for the transceiver that is part of the physical transceiver interface. For some protocols, the wizard also adds rows in the Logic and Clock sheets representing typical resources used to implement the data interface layer.
To understand the capabilities of the Versal™ ACAP GTY transceiver and the settings you will enter within XPE, see the Versal ACAP GTY Transceivers Architecture Manual (AM002).
The following fields are available in the XPE Transceivers Configuration dialog box:
- Allows you to select from a list of available protocols. Device, package, and speed grade limitations will limit the choices available. In some cases the number of Channels, Data Modes, and Clock Source selections will default to values defined by the protocol. The Data Rate and number of Channels will also be reflected in the PCIe information as appropriate. No clocks or fabric are populated in their respective sheets.
- Data Rate
- After selecting the Protocol the Data Rate will either display as a fixed value defined by the Protocol or allow you to enter the specific Data Rate used in your system. Except for the rare cases where receive and transmit rates are different, both RX and TX rates match. Some protocols (for example, PCIe) have specific restrictions for the number of channels and others allow you to enter the number of channels used in your system.
- Some protocols (for example, PCIe) have specific restrictions for the number of channels and others allow you to enter the number of channels used in your system.
- Operation Mode
- By default, the Transceiver configuration is used, but you can select Transmitter or Receiver only operation.
- Data Path and Data Mode
- Some protocols (for example, PCIe) have a specific width of the port that can be configured to be two, four, or eight bytes wide. With 8b/10b encoding, the port widths can be 16, 32 or 64 bits. With 64b/66b encoding, the port width must be 64 bits. In Raw mode, the port widths can be 16, 20, 32, 40, 64, or 80 bits.
- Power Mode
- Where the choice exists (as defined by the target transceiver), you can choose to use the power-efficient adaptive linear equalizer mode called the Low Power mode (LPM) or the high-performance, adaptive decision feedback equalization (DFE) mode. For a description of these modes, see the RX Equalizer (DFE and LPM) section in the Versal ACAP GTY Transceivers Architecture Manual (AM002).
- Clock Source
- Where the choice exists (as defined by the target device and data rate), you can choose to use the Versal device PLLs such as LCPLL and RPLL.
- Module Name
- Allows you to assign a name to the generated configuration. This will help distinguish multiple configurations in the XPE worksheets.
Once configured and created, a new row in the GTY Sheet is populated with the information you entered in the dialog box.