DATA
0
1
0
1
0
0
1
1
0
1
1
t1
t2
IRTX
nIRTX
t3 t4
MIRTX
t5 t6
nMIRTX
Parameter
min
typ
max
units
t1
t2
t3
t4
t5
t6
Modulated Output Bit Time
Off Bit Time
Modulated Output "On"
Modulated Output "Off"
Modulated Output "On"
Modulated Output "On"
µs
µs
µs
µs
µs
µs
0.8
0.8
0.8
0.8
1
1
1
1
1.2
1.2
1.2
1.2
Notes:
1. IRTX: CRC Bit 1: 1 = XMIT active low (default)
nIRTX: CRC Bit 1: 0 = XMIT active high
MIRTX, nMIRTX are the modulated outputs
FIGURE 13 - AMPLITUDE SHIFT KEYED IR TRANSMIT TIMING
SMSC DS – FDC37N769
Page 125 of 137
Rev. 02-16-07
DATASHEET