diff --git a/4410-4412.tex b/4410-4412.tex index e2e5c8b..b7839fa 100644 --- a/4410-4412.tex +++ b/4410-4412.tex @@ -691,6 +691,7 @@ Harmonic content of the DDS signals from 4410 DDS Urukul is tabulated below\foot \end{multicols} +\newpage \section{Urukul Mode Configurations} Mode of operation is specified by a DIP switch. The DIP switch can be found at the top right corner of the card. @@ -720,6 +721,28 @@ The following table summarizes the required setting for each mode. \end{multicols} +Note for Default mode: Switching on DIP Switch 3 enables the options that distribute the synchronization signals externally. +However, ARTIQ \& the core device (Kasli/Kasli-SoC) do not interact with these signals. + +\section{Urukul 1-EEM/2-EEM Modes} +4410/4412 DDS Urukul can operate with either 1 or 2 EEM connections. +It is in 1-EEM mode when only EEM0 is connected, 2-EEM mode when both EEM0 \& EEM1 are connected. +2-EEM mode provides these additional features in comparison to 1-EEM mode. +\begin{itemize} + \item 1 ns temporal resolution RF switches \\ + Without EEM1, the only way to access the switches is through the CPLD using SPI. \\ + With EEM1, RF switches can be controlled as a TTL output through the LVDS transceiver. + 1 ns temporal resolution is achieved using the ARTIQ RTIO system. + + \item SU-Servo (4410 DDS Urukul feature) \\ + SU-Servo requires both EEM0 \& EEM1 to control multiple DDS channels simultaneously using the QSPI interface. + + \item Distribute synchronization signals from Urukul (4410 DDS Urukul feature) \\ + Synchronization signals can only be distributed externally through EEM1. + ARTIQ \& the core device (Kasli/Kasli-SoC) will never interact with these signals. + +\end{itemize} + \newpage \section{Example ARTIQ code}