IRCC2.0 Datasheet, PDF (86/87 Pages) SMSC Corporation – Infrared Communications Controller

IRDA HDLC
Bit Rate Tolerance
"0.1% of Bit Rate (IrDA Spec)
Rx Pulse Width
Table 40 - IrDA HDLC Rx Pulse Width
MIN.
NOM.
1.152 Mbps
75ns
225ns
0.576 Mbps
200ns
450ns
MAX.
800ns
1000ns