Infra-red driver documentation.Mike Crowe <mac@empeg.com>(C) Empeg Ltd 1999Not a lot here yet :-)The Kenwood KCA-R6A remote control generates a sequence like the following:Go low for approx 16T (Around 9000us)Go high for approx 8T (Around 4000us)Go low for less than 2T (Around 750us)For each of the 32 bits  Go high for more than 2T (Around 1500us) == 1  Go high for less than T (Around 400us) == 0  Go low for less than 2T (Around 750us)Rather than repeat a signal when the button is held down certain buttonsgenerate the following code to indicate repetition.Go low for approx 16TGo high for approx 4TGo low for less than 2T(By removing the <2T from the start of the sequence and placing at the end it can be considered a stop bit but I found it easier to deal with it at the start).The 32 bits are encoded as XxYy where x and y are the actual data valueswhile X and Y are the logical inverses of the associated data values. Using LSB first yields sensible codes for the numbers.All codes are of the form b9xxThe numeric keys generate the code 0x where x is the number pressed.Tuner		1cTape		1dCD		1eCD-MD-CH	1fTrack-		0aTrack+		0bRewind		0cFF		0dDNPP		5ePlay/Pause	0eVol+		14Vol-		15