gecko-systems:gecko3stack:start

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gecko-systems:gecko3stack:start [2017/03/10 14:46] ghj1-localgecko-systems:gecko3stack:start [2021/12/20 10:49] (current) – external edit 127.0.0.1
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 ==== Platform and physical connection ==== ==== Platform and physical connection ====
  
-[[:platforms:gecko3_staddle|{{ :gecko-platforms:gecko3staddle:gecko3_staddle_card.jpg?100|GECKO3 staddle}}]]+[[:platforms:gecko3_staddle|{{ :gecko-platforms:gecko3_staddle:gecko3_staddle_card.jpg?100|GECKO3 staddle}}]]
  
 The GECKO3STACK is built on the [[:gecko-platforms:gecko3_staddle]] platform, which provides power supply, JTAG facilities and user interface ports. With a GECKO3 staddle a stack of up to five modules can be built. The GECKO3STACK is built on the [[:gecko-platforms:gecko3_staddle]] platform, which provides power supply, JTAG facilities and user interface ports. With a GECKO3 staddle a stack of up to five modules can be built.
  
-Connection between the modules is realized as a physical bus over the [[gecko3:system_bus|system bus]] connectors. On the IO1 BUS connector the pins supporting the Altium soft-JTAG chain are reserved and an external clock pin can be utilized as a global bus clock. The unassigned pins can be used arbitrarily, or to access the user interface features of the staddle. On the connector IO2 BUS up to 116 pins are available to implement inter-module communication.+Connection between the modules is realized as a physical bus over the [[gecko3:system_bus:start|system bus]] connectors. On the IO1 BUS connector the pins supporting the Altium soft-JTAG chain are reserved and an external clock pin can be utilized as a global bus clock. The unassigned pins can be used arbitrarily, or to access the user interface features of the staddle. On the connector IO2 BUS up to 116 pins are available to implement inter-module communication.
  
 {{ gecko-systems:gecko3stack:system-bus-stack.png?400 | Pin assignment}} {{ gecko-systems:gecko3stack:system-bus-stack.png?400 | Pin assignment}}
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 Developing with the Xilinx tools requires the connection with a Xilinx Platform Cable. The number of nodes has been set by the slide switch, but the DIP-switches have to be set on ''disable'', since the Xilinx tools do not utilize the soft-JTAG feature. Therefore, also the respective pins of the JTAG bridge cable do not have to be connected to the modules RS232 header. Commonly, projects for each GECKO3main module are programmed to the FPGAs using iMPACT, the Boundary scan view of which should show all Spartan3s connected by the JTAG chain. Developing with the Xilinx tools requires the connection with a Xilinx Platform Cable. The number of nodes has been set by the slide switch, but the DIP-switches have to be set on ''disable'', since the Xilinx tools do not utilize the soft-JTAG feature. Therefore, also the respective pins of the JTAG bridge cable do not have to be connected to the modules RS232 header. Commonly, projects for each GECKO3main module are programmed to the FPGAs using iMPACT, the Boundary scan view of which should show all Spartan3s connected by the JTAG chain.
  
 +{{ :gecko-systems:gecko3stack:gecko3stack_setup_xilinx.png?400 |Xilinx iMPACT Boundary Scan view}}
  
-{{ :gecko-systems:gecko3stack:gecko3stack_setup_xilinx.png?400| Xilinx iMPACT Boundary Scan view}} 
  
 === Altium Designer === === Altium Designer ===
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 {{:gecko-systems:gecko3stack:shiva_concept21.png?350&nolink| Distributed shared memory concept}} {{:gecko-systems:gecko3stack:shiva_concept21.png?350&nolink| Distributed shared memory concept}}
 +
 {{:gecko-systems:gecko3stack:shiva_concept31.png?350| SHIVA on GECKOSTACK}} {{:gecko-systems:gecko3stack:shiva_concept31.png?350| SHIVA on GECKOSTACK}}
  
 +FIXME
 [[:gecko-systems:gecko3stack:communication_interface_shiva |Details on SHIVA]] will be discussed separately. [[:gecko-systems:gecko3stack:communication_interface_shiva |Details on SHIVA]] will be discussed separately.
  
  
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