@@ -26,7 +26,7 @@ Not all parameters are needed; if one of the parameters is not present in the fi
\item[intRefOn]\verb|[boolean, false]| If true, the \gls{dac}s installed on the \gls{tlu} will use their internal voltage reference rather than the one provide externally.
\item[VRefInt]\verb|[float, 2.5]| Value in volts for the internal reference voltage of the \gls{dac}s. The voltage is chosen by the chip manufacturer. This is only used if \verb|intRefOn= true|.
\item[VRefExt]\verb|[float, 1.3]| Value in volts for the external reference voltage of the \gls{dac}s. The voltage is determined by a circuit on the \gls{tlu} and the value of this parameter must reflect such voltage. This is only used if \verb|intRefOn= false|.
\item[CONFCLOCK]\verb|[bool, true]| If true, the clock chip Si5345 will be re-configured when the INIT button is pressed (see figure~fig.\ref{fig:EUDAQGui}). The chip is configured via \gls{i2c} interface using a specific text file (see next parameter). After a power cycle, the chip is not configured and must be reconfigured to operate the \gls{tlu} correctly.
\item[CONFCLOCK]\verb|[boolean, true]| If true, the clock chip Si5345 will be re-configured when the INIT button is pressed (see figure~fig.\ref{fig:EUDAQGui}). The chip is configured via \gls{i2c} interface using a specific text file (see next parameter). After a power cycle, the chip is not configured and must be reconfigured to operate the \gls{tlu} correctly.
\item[CLOCK\_CFG\_FILE]\verb|[string, "./../user/eudet/misc/fmctlu_clock_config.txt"]| Name of the text file used to store the configuration values of the Si5345. The file can be generate using the Clockbuilder Pro software provided by \href{https://www.silabs.com/products/development-tools/software/clock}{SiLabs}.
\end{description}
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@@ -34,9 +34,31 @@ Not all parameters are needed; if one of the parameters is not present in the fi
\begin{description}
\item[confid]\verb|[string, "0"]| Does not serve any purpose in the code but can be useful to identify configuration settings used in a specific run. EUDAQ will store this information in the run data.
\item[verbose]\verb|[int, 0]| Defines the level of output messages from the \gls{tlu}. 0 indicates minimum output.
\item[HDMI1\_set]\verb|[positive int, 0b0001]| Defines the direction of the pins for the \verb|HDMI1| connector. A 1 indicates that the pin pair is an output, a 0 that they are an input. The order of the pairs is as follow:\\
bit 0= CONT, bit 1= SPARE, bit 2= TRIG, trig 3= BUSY. Note that the direction of the CLOCK pair is defined in a separate parameter.
\item[HDMI2\_set]\verb|[positive int, 0b0001]| Define the direction of the pins for the \verb|HDMI2| connector.
\item[HDMI3\_set]\verb|[positive int, 0b0001]| Define the direction of the pins for the \verb|HDMI3| connector.
\item[HDMI4\_set]\verb|[positive int, 0b0001]| Define the direction of the pins for the \verb|HDMI4| connector. Yah
\item[HDMI1\_set]\verb|[unsigned int, 0b0001]| Defines the source of the signal on the pins for the \verb|HDMI1| connector. A 1 indicates that each pin pair is an driven by the \gls{tlu}, a 0 that they are left floating (with respect to the \gls{TLU}). This can be used to define the signal direction on each pin pair. The order of the pairs is as follow:\\
bit 0= CONT, bit 1= SPARE, bit 2= TRIG, trig 3= BUSY. Note that the direction of the DUTClk pair is defined in a separate parameter.\\
Example to configure the connector to work with an EUDET device:\\
- in this configuration the BUSY line is driven by the device under test, so it is an input for the \gls{tlu} and should not be driven by it (bit 3= 0)\\
- TRIGGER line is an output for the \gls{tlu} so is driven by the it (bit 2= 1)\\
- SPARE line is currently not used and can be configured in either direction. However, future use is likely to have it configured as driven by the \gls{tlu} (bit 1= 1)\\
- CONT is used by the \gls{tlu} to issue control commands and should be configured as an output (bit 0= 1).\\
Therefore the value of this parameter would be 0x7 (b1110).
\item[HDMI2\_set]\verb|[unsigned int, 0b0001]| Defines the direction of the pins for the \verb|HDMI2| connector.
\item[HDMI3\_set]\verb|[unsigned int, 0b0001]| Defines the direction of the pins for the \verb|HDMI3| connector.
\item[HDMI4\_set]\verb|[unsigned int, 0b0001]| Defines the direction of the pins for the \verb|HDMI4| connector.
\item[HDMI1\_clk]\verb|[unsigned int, 1]| Defines if the DUTClk pair on the \gls{hdmi} connector must be driven by the \gls{tlu} and, if so, what clock source to use. A 0 indicates that the pins are not driven by the \gls[tlu}. 1 indicates that pins will by driven with the clock produced from the on-board clock chip Si5345. 2 indicates that the driving clock is obtained from the \gls{fpga}.\\
Example to configure the connector to work with an EUDET device: in this scenario the clock is driven by the \gls{dut} so the parameter should be set to 0.
Example to configure the connector to work with an AIDA device: in this scenario the clock is driven by the \gls{tlu} so the parameter should be set to either 1 or 2 (by default 1).
\item[HDMI2\_clk]\verb|[unsigned int, 1]| Defines the driving signal on the corresponding \gsl{hdmi} connector.
\item[HDMI3\_clk]\verb|[unsigned int, 1]| Defines the driving signal on the corresponding \gsl{hdmi} connector.
\item[HDMI4\_clk]\verb|[unsigned int, 1]| Defines the driving signal on the corresponding \gsl{hdmi} connector.
\item[LEMOclk]\verb|[boolean, true]| Defines whether a driving clock is to be provided on the differential LEMO connector of the \gls{tlu}. By default (value= 1), the clock is driven from the clock chip. If the value is set to 0 no clock will be driven.
\item[in0_STR]\verb|[unsigned int, 0]| Defines the number of clock cycles used to stretch a pulse once a trigger is detected by the discriminator on input 0. This feature allows the user to modify the pulses that are then fed into the trigger logic within the \gls{tlu}.
A minimum lenght of 6.25~ns is provided if the value is 0. Any extra clock cycle extend the pulse by 6.25~ns (160~MHz clock).
\item[in0_DEL]\verb|[unsigned int, 0]| Defines the delay, 160~MHz clock cycles, to be assigned to the discriminated pulse from input 0. This can be used to compensate for differences in cable lengths for the signals used to create a trigger.
\item[in1_STR]\verb|[unsigned int, 0]| Same as \texttt{in1\_STR} but for input 1.
\item[in1_DEL]\verb|[unsigned int, 0]| Same as \texttt{in1\_DEL} but for input 1.
\item[in2_STR]\verb|[unsigned int, 0]| Same as \texttt{in1\_STR} but for input 2.
\item[in2_DEL]\verb|[unsigned int, 0]| Same as \texttt{in1\_DEL} but for input 1.
\item[in3_STR]\verb|[unsigned int, 0]| Same as \texttt{in1\_STR} but for input 3.
\item[in3_DEL]\verb|[unsigned int, 0]| Same as \texttt{in1\_DEL} but for input 1.
