IRCC2.0 SMSC Corporation, IRCC2.0 Datasheet - Page 63

• Manufacturer Part Number: IRCC2.0
• Description: Infrared Communications Controller
• Manufacturer: SMSC Corporation

Receive Timing
Once enabled using the SCE Modes bits (Line
Control Register B), the IrDA-mode receiver
begins searching for valid FIR frames.
effects of non-valid IrDA infrared activity such as
out of spec pulse widths and invalid BOF
Framing errors or a FIFO overrun that occur
before the Frame Check Sequence is complete
Active Frame Int.
nActive Frame
EOM Interrupt
Rx Enable
FIGURE 27 - IrDA FIR RX ABORT ON OVERRUN TIMING
Active Frame Int.
nActive Frame
EOM Interrupt
Rx Enable
FIFO Full
FIGURE 26 - IrDA RX MESSAGE TIMING
BOF
A
BOF
The
63
C
A
sequences are always reflected in the status
indicators in the IrCC 2.0 configuration registers.
When a valid BOF is detected, errors are reset,
and a nActive Frame Interrupt is generated
(Figure 26). The EOM Interrupt is activated
following a valid EOF.
are indicated in the appropriate status register
bits and the message is aborted (Figure 27).
C
I
Overrun Error
Abort Error
I
FCS
EOF