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IP2022 Data Sheet
7.3.9
SxINTF Register
RTIF
Real-Time Timer interrupt flag
0 = No timer overflow has occurred
since this bit was last cleared
1 = Timer overflow has occurred.
This bit goes high two cycles
after the actual overflow
occurs.
7
6
5
4
3
2
1
0
Name
Description
RXERROR
Receive error in preamble (Manches-
ter encoding only)
0 = Receive error has not
been detected since this
bit was last cleared
1 = Double zero has been
detected in preamble (not
affected by double zero in
data)
EOP
End-of-Packet detection interrupt flag
(USB and 10Base-T modes only)
0 = End-of-Packet has not
been detected since this
bit was last cleared
1 = End-of-Packet has been
detected
SYND
Synchronization pattern detection
interrupt flag (USB and 10Base-T
modes only)
0 = Synchronization pattern
has not been detected
since this bit was last
cleared
1 = Synchronization pattern
has been detected
Name
Description
TXBE
Transmit buffer empty interrupt flag
0 = Transmit buffer has not
been empty since this bit
was last cleared
1 = Transmit buffer has been
empty
TXEOP
Transmit underrun. This bit is set
when the previous data in the trans-
mit buffer register (SxTXBUF) has
been transmitted and no new data
has been loaded in the register. In
USB and 10Base-T modes, this
causes an EOP condition to be gen-
erated.
0 = Transmit underrun has not
occurred since this bit was
last cleared
1 = Transmit underrun has
occurred
SXLINKPULSE
Set after a link pulse of 75 to 250 ns
duration is detected.
0 =
No link pulse has been
detected since this bit was
last cleared
1 =
Link pulse detected
RXBF
Receive buffer full interrupt flag
0 =
Receive buffer has not
been full since this bit was
last cleared
1 =
Receive buffer has been
full
RXBUSY
Receive buffer busy interrupt flag.
This bit can be used to check
whether data is being received
before entering a low-power mode.
0 =
No new data has been
received since this bit was
last cleared
1 =
New data has been (or is
being) received
Name
Description
