Visible to Intel only — GUID: iga1405555607007
Ixiasoft
Visible to Intel only — GUID: iga1405555607007
Ixiasoft
5.3.1.3. Specify Delay
Turning on this option causes the SPI host to add a time delay between asserting the ss_n signal and shifting the first bit of data. This delay is required by certain SPI agent devices. If the delay option is on, you must also specify the delay time in units of ns, µs or ms. An example is shown in below.
The delay generation logic uses a granularity of half the period of sclk. The actual delay achieved is the desired target delay rounded up to the nearest multiple of half the sclk period, as shown in the follow two equations.
p = 1/2 x (period of sclk) |
Actual delay = ceiling x (desired delay/ p) |