MEN Mikro Elektronik BL50S, User Manual

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Controlling the System via SMBus
MEN Mikro Elektronik GmbH 66
20BL50S00 E2 – 2014-12-10
SMBus Register (0x40)
Table 21. SMB 0x40
Bit Direction Signal
Default
Value
Description
Group
7 Out MINI_A_P
WR_EN 1 The bit is used to control the PCIe Mini Card
A's power. PCIe Mini
Card
0= The power of the PCIe Mini Card
is disabled.
1= The power of the PCIe Mini Card
is enabled (default value).
6 Out SIMA_SW 1 Signal to switch between the primary and
secondary SIM card of the PCIe Mini Card. PCIe Mini
Card
0= The secondary SIM card is
connected to the PCIe Mini Card
1= The primary SIM card is
connected to the PCIe Mini Card
(default value).
5 Out WDOG_
EN 1 Signal to reset the watchdog. Setting this bit
to '0' generates a falling edge. The falling
edge results in a reset of the watchdog. For
every watchdog reset the bit must be set in
sequence '1' -> '0' to generate a falling edge.
For further information about the watchdog
see
Chapter 3.1.1 Ignition on page 40 .
System
4 In IGNITION_
ISO 1 Signal to read back the ignition status. System
0= If this bit is '0' the ignition signal
is inactive.
Setting this bit to '0' results in the
same behavior as deactivating
the external ignition signal
(power button event, starting the
watchdog timer).
1= If the bit is '1' the ignition signal
is active.
3 Out USR_LED
D 1 Enable bit for the corresponding user LED. User LED
0 = The LED is enabled/on.
1 = The LED is disabled/off (default
value).
2 Out USR_LED
C 1 Enable bit for the corresponding user LED. User LED
0 = The LED is enabled/on.