LPC47S42X Datasheet, PDF (248/264 Pages) SMSC Corporation – ENHANCED SUPER I/O WITH LPC INTERFACE FOR SERVER APPLICATIONS

DAT A
0
1
0
1
0
t2
t1
IRT X
t2
t1
n IRT X
0
1
1
0
1
1
P arameter
t1 Pulse Width at 115kbaud
t1 Pulse Width at 57.6kbaud
t1 Pulse Width at 38.4kbaud
t1 Pulse Width at 19.2kbaud
t1 Pulse Width at 9.6kbaud
t1 Pulse Width at 4.8kbaud
t1 Pulse Width at 2.4kbaud
t2 Bit T ime at 115kbaud
t2 Bit Time at 57.6kbaud
t2 Bit Time at 38.4kbaud
t2 Bit Time at 19.2kbaud
t2 Bit Time at 9.6kbaud
t2 Bit Time at 4.8kbaud
t2 Bit Time at 2.4kbaud
mi n
typ
max
u nits
1.41
1.6
2.71
µs
1.41
3.22
3.69
µs
1.41
4.8
5.53
µs
1.41
9.7
11.07
µs
1.41
19.5
22.13
µs
1.41
39
44.27
µs
1.41
78
88.55
µs
8.68
µs
17.4
µs
26
µs
52
µs
104
µs
208
µs
416
µs
Notes:
1. IrDA @ 115k i s HPSIR compati ble. IrDA @ 2400 wi ll al low compatibility with HP95LX
and 48SX.
2. IRT X: L5, CRF 1 Bit 1 = 1 (default)
nIRT X: L5, CRF1 Bit 1 = 0
FIGURE 26 - IrDA TRANSMIT TIMING
248