FDC37B78X SMSC Corporation, FDC37B78X Datasheet - Page 74

• Manufacturer Part Number: FDC37B78X
• Description: Enhanced Super I/O Controller with ACPI Support/ Real Time Clock and Consumer IR
• Manufacturer: SMSC Corporation

MODE
ONLY
BIT 3
FIFO
0
0
0
1
0
0
BIT 2 BIT 1 BIT 0
IDENTIFICATION
0
1
1
1
0
0
INTERRUPT
REGISTER
0
1
0
0
1
0
1
0
0
0
0
0
TABLE 34 - INTERRUPT CONTROL
PRIORIT
Highest
Second
Second
Third
Fourth
Y LEVEL
-
INTERRUPT SET AND RESET FUNCTIONS
None
Receiver Line
Status
Received Data
Available
Character
Timeout
Indication
Transmitter
Holding
Register
Empty
MODEM
Status
INTERRUPT
74
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
-