Example Design Ports - 1.0 English

The ports shown in the following table are present on the example design top-level module, and are therefore package pins in the example project.

Table 1. Example Design Top-level Ports
Name	Direction	Clock Domain	Description
refclk<i>_<j>_p	Input	N/A	Positive and negative inputs of the differential reference clock
refclk<i>_<j>_n	Input	N/A
gtm_ch<i><j>_rxn_in	Input	Serial	Positive and negative inputs of the transceiver channel differential serial data receiver, where: <i>:0/1, <j>:dual* corresponding to the enabled duals.
gtm_ch<i><j>_rxp_in	Input	Serial
gtm_ch<i><j>_txn_out	Output	Serial	Positive and negative inputs of the transceiver channel differential serial data transmitter, where: <i>:0/1, <j>:dual* corresponding to the enabled duals.
gtm_ch<i><j>_txp_out	Output	Serial
hb_gtwiz_reset_clk_freerun_in	Input		Free-running clock, used by the example design and reset controller helper block. Note: To alternatively use a differential clock input, add a second input port, instantiate an IBUFDS primitive driven by both the existing hb_gtwiz_reset_clk_freerun_in and that new port, and drive the input of the existing BUFG primitive with the output of that IBUFDS primitive instead of the hb_gtwiz_reset_clk_freerun_in port.
hb_gtwiz_reset_all_in	Input	Async	Falling edge-triggered, active-High “reset all” input used by the reset controller helper block to initiate a full system reset sequence. Assumed to be de-bounced external to the device.
link_down_latched_reset_in	Input	Async	Active-High signal used to reset the sticky link down indicator. Assumed to be de-bounced external to the device. Free-running clock, used by the example design and reset controller helper block for various system bring-up tasks. The example design top-level module globally buffers this single-ended clock input.
link_status_out	Output	hb_gtwiz_reset_clk_freerun_in	Active-High, live indicator of link status based on combined PRBS match status across all example checking modules.
link_down_latched_out	Output	hb_gtwiz_reset_clk_freerun_in	Active-High, sticky link down indicator. Set when link_status_out is Low and cleared when link_down_latched_reset_in is High.