IRCC SMSC Corporation, IRCC Datasheet - Page 59

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

Once enabled using the SCE Modes bits in Line
Control Register B, the IrDA-mode receiver
begins searching for valid FIR frames.
affects of non-valid IrDA infrared activity such as
out of spec pulse widths and invalid BOF
Framing errors or a FIFO overrun that occurs
before the Frame Check Sequence is complete
Active Frame Int.
EOM Interrupt
Active Frame
FIFO Empty
Active Frame Int.
Rx Enable
FIGURE 27 - IrDA FIR RX ABORT ON OVERRUN TIMING
EOM Interrupt
Active Frame
EOM
Rx Enable
FIFO Full
FIGURE 26 - IrDA RX MESSAGE TIMING
EOM
BOF
BOF
A
The
59
C
A
indicators in the IrCC registers. When a valid
BOF is detected, the EOM from the previous
message is disabled, errors are reset, and an
nActive Frame Interrupt is sent (Figure 26).
EOM and the EOM Interrupt are enabled
following an active FCS.
is indicated in the appropriate status register bits
and the message is aborted (Figure 27).
C
I
Overrun Error
Abort Error
I
FCS
EOF