| Port Name | I/O | Description |
|---|---|---|
| hdcp_ext_clk | I | HDCP external clock |
| hdcp_key_aclk | I | HDCP key clock |
| hdcp_key_aresetn | I | Key Interface reset; Active-Low |
| hdcp_key_tdata[63:0] | I | AXI4-Stream Key Tdata |
| hdcp_key_last | I | AXI4-Stream Key Tlast |
| hdcp_key_tready | O | AXI4-Stream Key Tready |
| hdcp_key_tuser[7:0] | I |
AXI4-Stream Key TUSER. KMB sends the Key number from 0 to 41. 0 corresponds to KSV and 1 to 40 are the HDCP Keys count. |
| hdcp_key_tvalid | I | AXI4-Stream Key TValid |
| reg_key_sel[2:0] | O | To select one of the eight sets of 40 keys |
| start_key_transmit | O | Active-High pulse that is used to start key transmit |