FDC37C666GT View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
MFG CO.
FDC37C666GT
SMSC -> Microchip
'FDC37C666GT' PDF : 152 Pages View PDF
FIFO
MODE
ONLY
BIT
3
0
0
0
1
0
0
INTERRUPT
IDENTIFICATION
REGISTER
BIT BIT BIT
2
1
0
0
0
1
1
1
0
1
0
0
1
0
0
0
1
0
0
0
0
Table 35 - Interrupt Control Table
INTERRUPT SET AND RESET FUNCTIONS
PRIORIT
Y LEVEL
INTERRUPT
TYPE
INTERRUPT
SOURCE
INTERRUPT
RESET
CONTROL
-
None
None
-
Highest
Receiver Line
Status
Overrun Error,
Parity Error,
Framing Error or
Break Interrupt
Reading the Line
Status Register
Second
Received Data
Available
Receiver Data
Available
Read Receiver
Buffer or the
FIFO drops
below the trigger
level.
Second
Character
Timeout
Indication
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
Reading the
Receiver Buffer
Register
Third
Transmitter
Holding Register
Empty
Transmitter
Holding Register
Empty
Reading the IIR
Register (if
Source of
Interrupt) or
Writing the
Transmitter
Holding Register
Fourth
MODEM Status
Clear to Send or
Data Set Ready
or Ring Indicator
or Data Carrier
Detect
Reading the
MODEM Status
Register
81
Share Link: 