7 control register - 14, 12 control register - 14, Vmp2 configuration – Kontron VMP2 User Manual
Page 66
VMP2
Configuration
ID 24855, Rev. 02
Page 4 - 14
© 2002 PEP Modular Computers GmbH
4.3.4.7 Control Register
The Control register provides access to the front panel general purpose LED’s (LED1/
Green and LED2/Red), allows for the generation of a software reset of the system, and
is used to control the configuration of the SER either for RS-232 or RS-485 operation.
Table 4-12: Control Register
REGISTER NAME
CONTROL
ACCESS
ADDRESS
0xFFE0 001A
R
W
BIT POSITION
MSB
7
6
5
4
3
2
1
0
LSB
CONTENT
RS_CTL
Res.
Res.
S_RST
Res.
Res.
GPLED2 GPLED1
DEFAULT
n/a
n/a
0
n/a
0
0
0
0
BIT
NAME
VAL
DESCRIPTION
0
Indicator
LED1/
Green
0
GPLED1 LED1G (green) off
1
GPLED1 LED1G (green) on
1
Indicator
LED2/Red
0
GPLED2 (optional, red) off
1
GPLED2 (optional, red) on
2
Res.
0
Reserved
1
3
Res.
0
Reserved
1
4
S_RST
0
No operation
1
Causes a software reset (S_RST) to be initiated
5
Res.
0
Reserved
1
6
Res.
0
Reserved
1
7
RS_CTL
0
SER connector configured to act as an RS232 interface (default)
1
SER connector configured to act as an RS485 interface
!
Warning:
When setting bit 7 the user must ensure that the corresponding
interface is also an RS485. A mismatch will risk damage to the
VMP2 and/or the application.