IRCC SMSC Corporation, IRCC Datasheet - Page 15

• Manufacturer Part Number: IRCC
• Description: INFRARED COMMUNICATIONS CONTROLLER
• Manufacturer: SMSC Corporation

NOTES:
1.
2.
IrDA @ 115k is HPSIR compatible. IrDA @ 2400 will allow compatibility with HP95LX and 48SX.
IRRX: CRC Bit 1: 1 = XMIT active low
nIRRX: CRC Bit 1: 0 = XMIT active high (default)
t1
t1
t1
t1
t1
t1
t1
t2
t2
t2
t2
t2
t2
t2
DATA
IRRX
nIRRX
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
1
t2
PARAMETER
FIGURE 7 - IrDA RECEIVE TIMING
t1
0
1
0
15
0
MIN
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1
1
TYP
3.22
19.5
8.68
17.4
104
208
416
1.6
4.8
9.7
39
78
26
52
0
11.07
22.13
44.27
MAX
2.71
3.69
5.53
88.5
1
UNITS
1
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs