Kontron VMP3 - Manual (Page 67)

VMP3 Configuration
ID 29230, Rev. 01 © 2005 Kontron Modular Computers GmbH Page 4 - 7
29230
.01.UG.VC.050727/091435
P R E L I M I N A R Y
Table 4-6: Event Register
REGISTER NAME EVENT ACCESS
ADDRESS 0xFFFF A004 R W
BIT POSITION
MSB
7 6 5 4 3 2 1 0
LSB
CONTENT MC5 MC3 res. MC2 MC8 MC1 ALARM res.
DEFAULT n/a n/a n/a n/a n/a 0 0 n/a
BIT CONTENT STATE DESCRIPTION
0 reserved
0
1
1 ALARM
0 Indicates that ALARM signal on RTC has not been asserted
1 Indicates that ALARM signal on RTC has been asserted
2 MC1
0 Indicates that the MC1 signal has not been asserted
1
Indicates that the MC1 signal has been asserted
(This will result in a NMI being generated which can be cleared by writing a
’1’.)
3 MC8
0 Indicates that the EB405 is being operated in Agent mode
1 Indicates that the EB405 is being operated in Master mode
4 MC2
0
Case: MC2_INT_EN = 0
Indicates the status of the MC2 input: electrical: low = 0, high = 1
Case: MC2_INT_EN = 1 (default = 0)
The falling edge of the signal on MC2 pin sets this bit to ’1’ and generates
the MCInt on the CPU provided it is enabled there
(This may be cleared by writing a ’1’.)
1
5 reserved
0
1
6 MC3
0
Case: MC3_INT_EN = 0
Indicates the status of the MC3 input: electrical: low = 0, high = 1
Case: MC3_INT_EN = 1 (default = 0)
The falling edge of the signal on MC3 pin sets this bit to ’1’ and generates
the MCInt on the CPU provided it is enabled there
(This may be cleared by writing a ’1’.)
1
7 MC5
0
Case: MC3_INT_EN = 0
Indicates the status of the MC3 input: electrical: low = 0, high = 1
Case: MC3_INT_EN = 1 (default = 0)
The falling edge of the signal on MC3 pin sets this bit to ’1’ and generates
the MCInt on the CPU provided it is enabled there
(This may be cleared by writing a ’1’.)
1