FDC37C672QFP SMSC Corporation, FDC37C672QFP Datasheet - Page 169

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

Enhanced Super I/O Controller with Fast IR
Datasheet
SMSC FDC37C672
n IRTX
DATA
IRTX
Notes:
1. IrDA @ 115k is HPSIR compatible. IrDA @ 2400 will allow compatibility with HP95LX
2. IRTX:
t1
t1
t1
t1
t1
t1
t1
t2
t2
t2
t2
t2
t2
t2
and 48SX.
nIRTX: L5, CRF1 Bit 1: 0 = XMIT active high
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
t1
t2
L5, CRF1 Bit 1: 1 = XMIT active low (default)
1
t2
Parameter
Figure 22.5 - IrDA Transmit Timing
t1
0
DATASHEET
1
Page 169
0
0
min
1.41
1.41
1.41
1.41
1.41
1.41
1.41
1
3.22
19.5
8.68
17.4
104
208
416
typ
1.6
4.8
9.7
39
78
26
52
1
max
11.07
22.13
44.27
88.55
2.71
3.69
5.53
0
units
1
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
1
Rev. 10-29-03