FDC37B78X SMSC Corporation, FDC37B78X Datasheet - Page 255

• Manufacturer Part Number: FDC37B78X
• Description: Enhanced Super I/O Controller with ACPI Support/ Real Time Clock and Consumer IR
• Manufacturer: SMSC Corporation

ASK IR Receive
nM IRRX
M IRRX
n IRRX
DATA
IRRX
FIGURE 32 - AMPLITUDE SHIFT KEYED IR RECEIVE TIMING
Note s:
1 . IRRX: L 5, CRF 1 Bit 0 = 1
0
t1
t2
t3
t4
t5
t6
t1
n IRRX: L5 , CRF1 Bit 0 = 0 (de fault)
MIRRX, nMI RRX are the mod ulate d ou tpu ts
t3
t5
Modulated Out put Bit Time
Off Bit Time
Modu lated Outp ut " On"
Modu lated Out put " Off"
Modu lated Outp ut " On"
Modu lated Out put " Off"
t6
t4
1
t2
P a ramet er
0
1
256
min
0
0.8
0.8
0.8
0.8
0
typ
1
1
1
1
1
max
1.2
1.2
1.2
1.2
1
un its
µ s
µ s
µ s
µ s
µ s
µ s
0
1
1