MEN BL70S, Руководство пользователя

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Hardware/Software Interface
20BL70S00 E3

2018-06-11 Page 63
4.1.1 SMBus Configuration Registers
4.1.1.1 User LED, SIM Card, PCIe MiniCard Power Signals, Ignition, Watchdog
SMB Register (
0x40
)
Table 30. SMB Register (
0x40
)
Bit 7 6 5 4 3 2 1 0
Name
MINI_A_P
WR_EN
SIMA_SW
WDOG_
EN
IGNITION_
ISO
USR_LED
[D]
USR_LED
[C]
USR_LED
[B]
USR_LED
[A]
Access
W W W R W W W W
Reset
1 1 1 - 1 1 1 1
Bit Field Description
7 MINI_x_PWR
_EN
Power supply for respective PCIe Mini Card

0: Power supply off

1: Power supply on
6 SIMx_SW Switch between primary and secondary SIM card of the PCIe
Mini Card

0: Secondary SIM connected to the PCIe Mini Card

1: Primary SIM connected to the PCIe Mini Card
5 WDOG_EN Reset power supply watchdog (ignition)

0: Watchdog reset

1: Normal operation
Set the bit in sequence ’1’ > ’0’ to generate a falling edge to reset
the watchdog.
4 IGNITION_ISO Read-back the ignition status

0: Ignition signal inactive

1: Ignition signal active
3:0 USR_LED[D:A] Enable user LED

0: LED on (enabled)

1: LED off (disabled)