IP customization options in the Optional Features tab are described in the following subsections. The use of each of these features is optional. You need not customize the options for a given feature if your application does not use that feature. For more information, see Virtex UltraScale+ FPGAs GTM Transceivers User Guide (UG581). The layout of the Optional Features tab is shown in the following figure.
Figure 1. Optional Features Tab
Selectable TXOUTCLK Frequency
- Enable selectable TXOUTCLK frequency
- For this version of the GTM Wizard IP, this is always enabled, as
TXPROGDIVCLKis the only source. - Programmable divider clock source
- LCPLL is the clock source used for the TX programmable divider.
- TXOUTCLK frequency (MHz)
- Select from among the
TXOUTCLKfrequencies that can be generated by the TX programmable divider and are compatible with the core configuration and selected device.
Selectable RXOUTCLK Frequency
- Enable selectable RXOUTCLK frequency
- For this version of the GTM Wizard IP, this is always enabled, as
RXPROGDIVCLKis the only source. - Programmable divider clock source
- LCPLL is the clock source for the RX programmable divider.
- RXOUTCLK frequency (MHz)
- Select from among the
RXOUTCLKfrequencies that can be generated by the RX programmable divider and are compatible with the core configuration and selected device.
PRECODE
- TX Precode Bypass
- Enable this option to bypass TX Pre-Coder.
- TX Precode Little Endian mode
- Enable this option to select TX Precode little endian mode. This is shown in the GUI as TX MSB-LSB Swap.
- RX Precode Bypass
- Enable this option to bypass RX Pre-Coder.
- RX Precode Little Endian mode
- Enable this option to select RX Precode little endian mode. This is shown in the GUI as RX MSB-LSB Swap.
Gray
- TX Gray Bypass
- Enable this option to bypass TX Gray code.
- TX Gray code Little Endian mode
- Enable this option to select TX Gray code little endian mode.
- RX Gray Bypass
- Enable this option to bypass RX Gray code.
- RX Gray code Little Endian mode
- Enable this option to select RX Gray code little endian mode.