IRCC SMSC Corporation, IRCC Datasheet - Page 43

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

MODE
ONLY
BIT 3
FIFO
0
0
0
1
0
0
BIT 2
0
1
1
1
0
0
IDENTIFICATION
INTERRUPT
REGISTER
BIT 1
0
1
0
0
1
0
BIT 0
1
0
0
0
0
0
Highest
Second
Second
Third
Fourth
PRIORITY
LEVEL
-
INTERRUPT SET AND RESET FUNCTIONS
43
None
Receiver Line
Status
Received Data
Available
Character
Timeout
Indication
Transmitter
Holding Register
Empty
MODEM Status
INTERRUPT
TYPE
None
Overrun Error,
Parity Error,
Framing Error
or Break
Interrupt
Receiver Data
Available
No Characters
Have Been
Removed From
or Input to the
RCVR FIFO
during the last 4
Char times and
there is at least
1 char in it
during this time
Transmitter
Holding
Register Empty
Clear to Send or
Data Set Ready
or Ring
Indicator or
Data Carrier
Detect
INTERRUPT
SOURCE
Reading the
Line Status
Register
Read
Receiver
Buffer or the
FIFO drops
below the
trigger level.
Reading the
Receiver
Buffer
Register
Reading the
IIR Register (if
Source of
Interrupt) or
Writing the
Transmitter
Holding
Register
Reading the
MODEM
Status
Register
INTERRUPT
CONTROL
RESET
-