DATA
0
1
0
1
0
0
1
1
0
1
1
t1
t2
IRRX
nIRRX
t3 t4
MIRRX
t5 t6
nMIRRX
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. IRRX: CRC Bit 0: 1 = RCV active low
nIRRX: CRC Bit 0: 0 = RCV active high (default)
MIRRX, nMIRRX are the modulated outputs
FIGURE 12 - AMPLITUDE SHIFT KEYED IR RECEIVE TIMING
SMSC DS – FDC37N769
Page 124 of 137
Rev. 02-16-07
DATASHEET