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ice:enclosure [2015/05/04 10:05]
jtshugrue [I/O]
ice:enclosure [2015/05/05 17:32]
jtshugrue Corrected mistakes in EVENT system pin definitions.
Line 83: Line 83:
 <tabcaption db9pindef| D-Sub 9 pin connector pin definitions.> <tabcaption db9pindef| D-Sub 9 pin connector pin definitions.>
 ^  **Pin**  ^  **Signal**  ^ ^  **Pin**  ^  **Signal**  ^
-|  1  |  EVENT_Trigger  |+|  1  |  EVENT_ADDR0  |
 |  2  |  RXI_Serial  | |  2  |  RXI_Serial  |
 |  3  |  TXO_Serial  | |  3  |  TXO_Serial  |
 |  4  |  5V In((leave unconnected if USB is also connected))  | |  4  |  5V In((leave unconnected if USB is also connected))  |
 |  5  |  Ground  | |  5  |  Ground  |
-|  6  |  EVENT_ADDR0  |+|  6  |  EVENT_ADDR1  |
 |  7  |  No Connect  | |  7  |  No Connect  |
-|  8  |  EVENT_ADDR1  | +|  8  |  EVENT_ADDR2  | 
-|  9  |  EVENT_ADDR2  |+|  9  |  EVENT_Trigger  |
 </tabcaption> </tabcaption>
 </WRAP> </WRAP>
Line 112: Line 112:
  
 == EVENT == == EVENT ==
-The EVENT pins are used for event system signalling. Voltage signalling is at 3.3V, active low. Pin definitions and usage is detailed in the [[ice:event_system|Event System]] section.+The EVENT pins are used for event system signalling. EVENT_ADDR0 is the least significant bit of the 3-bit event address. EVENT_TRIGGER is used to trigger the event. The state of the EVENT_ADDR pins will be read when on the rising edge of the EVENT_TRIGGER line. Voltage signalling is at 3.3V TTL, active high. Pin definitions and usage is detailed in the [[ice:event_system|Event System]] section.
 === Safety Interlock BNC === === Safety Interlock BNC ===
 The safety interlock signal prevents the Master Controller from releasing the safety interlocks on all attached daughter boards. The safety interlock is only applicable to daughter boards that have laser controllers. Without the safety interlocks released, daughter boards are prevented from powering on lasers. The safety interlock signal floats high to 3.3V and must be pulled down to ground to release the interlocks. It must be pulled to ground with less than 1kΩ of impedance. This pin can be permanently shorted directly to ground if safety interlock functionality is not required. The safety interlock signal prevents the Master Controller from releasing the safety interlocks on all attached daughter boards. The safety interlock is only applicable to daughter boards that have laser controllers. Without the safety interlocks released, daughter boards are prevented from powering on lasers. The safety interlock signal floats high to 3.3V and must be pulled down to ground to release the interlocks. It must be pulled to ground with less than 1kΩ of impedance. This pin can be permanently shorted directly to ground if safety interlock functionality is not required.
ice/enclosure.txt · Last modified: 2016/03/15 16:23 by jtshugrue