Kontron VMP1 with Netbootloader - Manual (Page 59)

VMP1 Configuration
ID 26037, Rev. 01 Page 4 - 13 ® 2002 PEP Modular Computers GmbH
4.3.4.9 Control Register
• Bits 0 – 1: A “1” written to these bits lights the LED’s (LED1* is the green LED of
the top set on the front panel and LED2* is the red one)
• Bits 2 – 3 are reserved
• Bit S_RST: A “1” written to this bit initiates a Software Reset
• Bits 5 – 6 are reserved
• Bit 7: A “0” written to this bit configures the onboard SER connector to act as an
RS232 interface. A “1” written to this bit configures the onboard SER connector to
act as an RS485 interface (not optoisolated/half duplex)(default = 0)
4.3.4.10 Event Register
• Bit WD is used to indicate that a watchdog overrun has occurred (logic 1 if
condition has occurred)
• Bit 1 is reserved
• Bit PB2 is used to indicate that the abort button has been pressed (logic 1 if this
condition has occurred)
• Bits 3 - 6 are reserved
• Bit 7: ”NOT LRST” – this bit shows the status of the LRST pin of the
TUNDRA UNIVERSE II (important for bootstrap loader).
Table 4-14: Control Register
Register Address MSB 6 5 4 3 2 1 LSB
Control FFe0 001a RS_CTL Res. Res. S_RST Res. Res. LED2* LED1*
!
Warning:
When setting bit 7 the user must ensure that the corresponding
interface is also an RS485. A mismatch will risk damage to the
VMP1 and/or the application.
Table 4-15: Event Register
Register Address MSB 6 5 4 3 2 1 LSB
Event FFe0 001c NLRST Res. Res. Res. Res. PB2 Res. WD