Visible to Intel only — GUID: sam1412044474321
Ixiasoft
Visible to Intel only — GUID: sam1412044474321
Ixiasoft
1.4.2. Read Silicon ID from the EPCS Device
The IP core registers the read_sid signal on the rising edge of the clkin signal. After the IP core registers the read_sid signal, it asserts the busy signal to indicate that the read command is in progress.
Ensure that the silicon ID appears on the epcs_id[7..0] signal before the busy signal is deasserted. Therefore, you can sample the epcs_id[7..0] signal as soon as the busy signal is deasserted.
The epcs_id[7..0] signal holds the value of the silicon ID until the device resets. Therefore, you must execute this command only once.
If you keep the read_sid signal asserted while busy signal is deasserted and the IP core has finished processing the read command, the IP core re-registers the read_sid signal as a value of one and carries out another read command. Therefore, before the IP core deasserts the busy signal, you must deassert the read_sid signal.