IC-JRX Datasheet, PDF (10/23 Pages) IC-Haus GmbH – µP INTERFACE WITH 2×4 24V HIGH-SIDE DRIVERS

iC-JRX
µP INTERFACE WITH 2×4 24V HIGH-SIDE DRIVERS
Rev A1, Page 10/23
Interrupt Status Register (read only)
higher nibble
Bit
7
6
5
4
Name
DCHI
IET2
IET1
ISCI
lower nibble
3
2
-
ET2
Add.: 2
reset entry: 00h
1
0
ET1
SCS
higher nibble
overcurrent, excessive temperature, change-of-input data (interrupts stored)
Read access gates off changes to the register; the register is reenabled only when reset via EOI. Any
successive interrupts for IET1 and IET2 which occur during the read-out phase and before a reset with EOI
are trapped (pipeline). If this happens, the message at INTN cannot be deleted by EOI, i.e. INTN constantly
remains on low. In this instance, EOI fills the excessive temperatue message from the pipeline.
Bit 7
0
No message
(r)
DCHI
1
Interrupt through change-of-input message
Bit 6
0
No message
(r)
IET2
1
Interrupt through excessive temperature level 2
Bit 5
0
No message
(r)
IET1
1
Interrupt through excessive temperature level 1
Bit 4
0
No message
(r)
ISCI
1
Interrupt through overcurrent message
lower nibble
overcurrent status, excessive temperature status (real time signals, at the time of readout)
Bit 2
0
No error message
(r)
ET2
1
Excessive temperature level 2 (shutdown)
Bit 1
0
No error message
(r)
ET1
1
Excessive temperature level 1 (warning)
Bit 0
0
No error message
(r)
SCS
1
Overcurrent status (e.g. caused by low-side short circuit)
Overcurrent Message (read only)
Bit
Name
7
SCI7
6
SCI6
5
SCI5
4
SCI4
3
SCI3
2
SCI2
1
SCI1
Add.: 3
reset entry: 00h
0
SCI0
Bit 7..0
0
SCI7..0
1
No message
(r)
Output IOx has had an overcurrent state enabled for interrupt messages (short circuit)
Read access gates off changes to the register; the register is reenabled only when reset via EOI. Any
successive interrupts which occur during the read-out phase and before a reset with EOI are trapped by an
interrupt pipeline. If this happens, the message at INTN cannot be deleted by EOI, i.e. INTN constantly
remains on low. In this instance, EOI fills the overcurrent message from the pipeline.
‘0’ is output for IOx pins in input mode.
SCIx reports for IOx.