FDC37B78X SMSC Corporation, FDC37B78X Datasheet - Page 254

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

IRDA SIR TRANSMIT
n IRT X
DAT A
IRT X
0
t1
Notes:
1. I rDA @ 115k is HPSIR compatible. IrDA @ 2400 will allow compatibility with HP95LX
2. IRT X:
t2
t1
t1
t1
t1
t1
t1
t1
t2
t2
t2
t2
t2
t2
t2
nIRT X: L5, CRF1 Bit 1 = 0
and 48SX.
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
1
t2
L5, CRF 1 Bit 1 = 1 (default)
FIGURE 31 - IRDA SIR TRANSMIT TIMING
t1
0
Parameter
1
0
255
mi n
1.41
1.41
1.41
1.41
1.41
1.41
1.41
0
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
1
0
u nits
µ s
µ s
µ s
µ s
µ s
µ s
µ s
µ s
µ s
µ s
µ s
µ s
µ s
µ s
1
1