FDC37C672QFP SMSC Corporation, FDC37C672QFP Datasheet - Page 168

• Manufacturer Part Number: FDC37C672QFP
• Description: ENHANCED SUPER I/O CONTROLLER WITH FAST IR
• Manufacturer: SMSC Corporation

SMSC FDC37C672
Notes:
1. Receive Pulse Detection Criteria: A received pulse is considered detected if the
2. IRRX: L5, CRF1 Bit 0: 1 = RCV active low
n IRRX
IRRX
DATA
t1
t1
t1
t1
t1
t1
t1
t2
t2
t2
t2
t2
t2
t2
received pulse is a minimum of 1.41µs.
nIRRX: L5, CRF1 Bit 0: 0 = RCV active high (default)
Pulse Width at 115kbaud
Pulse Width at 57.6kbaud
Pulse Width at 38.4kbaud
Pulse Width at 19.2kbaud
Pulse Width at 9.6kbaud
Pulse Width at 4.8kbaud
Pulse Width at 2.4kbaud
Bit Time at 115kbaud
Bit Time at 57.6kbaud
Bit Time at 38.4kbaud
Bit Time at 19.2kbaud
Bit Time at 9.6kbaud
Bit Time at 4.8kbaud
Bit Time at 2.4kbaud
0
t2
t1
1
t2
Parameter
Figure 22.4 - IrDA Receive Timing
t1
0
DATASHEET
1
Page 168
0
0
min
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1
3.22
19.5
8.68
17.4
104
208
416
typ
1.6
4.8
9.7
39
78
26
52
1
Enhanced Super I/O Controller with Fast IR
max
11.07
22.13
44.27
88.55
2.71
3.69
5.53
0
1
units
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
1
Rev. 10-29-03
Datasheet