Echelon FTXL Hardware - Manual (Page 79)

FTXL Hardware Guide 71
The output of each test lists the test name together with an indication of whether
it passed or failed. For some of the tests, additional output describes specific
error conditions or wait states.
Reset Test
The Reset Test exercises the FTXL Transceiver’s reset line by asserting and
deasserting it, and then verifying that both the status register and reset capture
register behave as expected. All of the other tests in the suite require that the
reset and status register behave properly.
Figure 27 provides an overview of the signals during the entire test. The CS~,
R/W~, and A0 signals are in flux while the host polls the handshake register
waiting for the FTXL Transceiver to complete its reset.
Host asserts/
deasserts reset
Host reads busy status
Status is
ready
Figure 27. Reset Test Overview
Figure 28 on page 72 shows the detail of the far left-hand side of Figure 27, and
shows the signals when the host asserts and deasserts the reset line. In this
diagram, each time that the CS~ line goes low, the host reads the handshake
signal.