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									The PIT, which connects to the VideoBloX intercom CPU, simulates a keyboard. This PIT will be referred to as the Intercom CPU PIT.
 
								 
							 
						 
					 
					 
				 
					 
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					51196694-904  Data sheet 
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																								It receives LED control message packets on its RS422 slave port and converts these into single ASCII characters in the range ‘A’..‘X’.
 
																							 
																						 
																					 
																				 
																			 
																		 
																	 
																 
															 
														 
													 
												 
											 
										 
									 
								 
							 
						 
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																								 When it detects any key press, these are converted into ASCII characters in the range ‘0’..‘7’ which are transmitted out of the RS232 master port.
 
																							 
																						 
																					 
																				 
																			 
																		 
																	 
																 
															 
														 
													 
												 
											 
										 
									 
								 
							 
						 
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																									This PIT will be referred to as the keyboard PIT.
 
																								 
																							 
																						 
																					 
																					 
																				 
																			 
																		 
																	 
																 
															 
														 
													 
												 
											 
										 
									 
								 
							 
						 
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