FDC37B80X SMSC [SMSC Corporation], FDC37B80X Datasheet - Page 189

• Manufacturer Part Number: FDC37B80X
• Description: PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up
• Manufacturer: SMSC [SMSC Corporation]

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 20 - IrDA TRANSMIT TIMING
t1
0
1
0
189
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