iC-JRX
µP INTERFACE WITH 2×4 24V HIGH-SIDE DRIVERS
Rev A1, Page 10/23
Interrupt Status Register (read only)
Add.: 2
reset entry: 00h
higher nibble
lower nibble
Bit
7
6
5
4
3
-
2
1
0
Name
DCHI
IET2
IET1
ISCI
ET2
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
1
No message
(r)
DCHI
Interrupt through change-of-input message
Bit 6
IET2
0
1
No message
(r)
(r)
(r)
Interrupt through excessive temperature level 2
Bit 5
IET1
0
1
No message
Interrupt through excessive temperature level 1
Bit 4
ISCI
0
1
No message
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)
(r)
(r)
ET2
1
Excessive temperature level 2 (shutdown)
Bit 1
ET1
0
1
No error message
Excessive temperature level 1 (warning)
Bit 0
SCS
0
1
No error message
Overcurrent status (e.g. caused by low-side short circuit)
Overcurrent Message (read only)
Add.: 3
reset entry: 00h
Bit
7
6
5
4
3
2
1
0
Name
SCI7
SCI6
SCI5
SCI4
SCI3
SCI2
SCI1
SCI0
Bit 7..0
SCI7..0
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.
ICHAUS [ IC-HAUS GMBH ]
