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ice:enclosure [2015/05/05 17:32]
jtshugrue Corrected mistakes in EVENT system pin definitions.
ice:enclosure [2016/03/15 16:23] (current)
jtshugrue Clarified labeling of TTL serial signals
Line 84: Line 84:
 ^  **Pin** ​ ^  **Signal** ​ ^ ^  **Pin** ​ ^  **Signal** ​ ^
 |  1  |  EVENT_ADDR0 ​ | |  1  |  EVENT_ADDR0 ​ |
-|  2  |  ​RXI_Serial ​ | +|  2  |  ​TX_Serial ​ | 
-|  3  |  ​TXO_Serial ​ |+|  3  |  ​RX_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 ​ |
Line 96: Line 96:
  
 == TTL Serial == == TTL Serial ==
-This provides a TTL (low-voltage) asynchronous serial interface (USART) to communicate with the ICE Platform. Note that this serial interface is **not** compatible with RS-232 signalling levels, as found on the COM ports of older PC's. The serial interface operates at 3.3V signalling levels, ​115,​200 ​Baud, 8N1 format (8 bit, no parity, 1 stop bit), and no flow control. Bus idle state is high (3.3V). The TXO (transmit out) and RXI (receive in) nomenclature is from the perspective of the device external to the Master Controller. TXO is for an external device transmitting data into the ICE Platform. RXI is for the ICE Platform sending data out to an external device. Either the TTL serial interface or USB can be used to receive commands, but **not** simultaneously (e.g. interleaved bytes).+This provides a LVTTL (low-voltage, 3.3V signalling) asynchronous serial interface (USART) to communicate with the ICE Platform. Note that this serial interface is **not** compatible with RS-232 signalling levels, as found on the COM ports of older PC's. The serial interface operates at 3.3V signalling levels, ​115200 ​Baud, 8N1 format (8 bit, no parity, 1 stop bit), and no flow control. Bus idle state is high (3.3V). The TX (transmit out) and RX (receive in) nomenclature is from the perspective of the ICE Box. Either the TTL serial interface or USB can be used to receive commands, but **not** simultaneously (e.g. interleaved bytes).
 <WRAP center round important 60%> <WRAP center round important 60%>
-Either the TTL serial interface or USB can be used to receive commands, but **not** simultaneously (e.g. interleaved bytes).+Either the TTL serial interface or USB can be used to receive commands, but **not** simultaneously (e.g. interleaved bytes). Taking turns sending complete commands and responses is okay.
 </​WRAP>​ </​WRAP>​
  
ice/enclosure.txt · Last modified: 2016/03/15 16:23 by jtshugrue