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