Lanner LVC-5000(N4) Manual de usuario descargar pdf (Pagina 22)

Board Layout

Chapter 3

Embedded and Industrial Computing

Select MCU Detect Function for power ignition

behavior (SW1):

The functions of the above jumpers are further explained

here.

Power Good Detection1. : A power-good signal

from the main board will be sent to the ignition

controller so that the ignition controller can

decide or alter the power state upon the following

instances. (Refer to the flow chart in Chapter 4):

Power-on instance •

Power-good signal turned-low instance •

Low Voltage Detection2. : Turn on this switch to

enable the automatic detection of low voltage

state of the battery. It will automatically turn

off the system when low voltage state has been

detected (Note: the low-voltage condition needs

to remain 30 seconds continually). The voltage

level can be set in the Ignition System Manager

(ISM) which is provided by Lanner as a sample

code for functions on the power ignition module.

The default setting of this function: Shutdown

Voltage in the ISM is disabled. (Refer to the flow

chart in Chapter 4 and the Using the Ignition

System Manager (ISM) in Appendix A.)

Watchdog:

3. Enable this switch to enable shutdown

after watchdog timer count-down to zero. This is a

programmable function. If there is no program to

control and monitor the watchdog timer, set this

jumper to disabled to avoid abnormal shutdown.

The default time-out value is 300 sec( you will need

an AT command to reset watchdog timer; contact

Lanner rep for this program).

PS/2 Keyboard and Mouse Connector (PKMB1)

12VDC Power Output (CN5)

An external RS-232 Connector for MCU Programming

(CN2) for ignition Function:

Pin No. Pin Name

1 VCC

3 MDATA

5 KDATA

7 GND

Pin No. Pin Name

2 MCLK

4 NC

6 NC

8 KCLK

1 2 3 4

SW1

Selector No. SW1 Ignition Function

1 Power Good Detection ON: Enable

OFF: Disable

2 Low Voltage Detection

3 Watchdog

4 Programming MCU Reserved

The default value is ON for selector 1, ON for se-

lector 2, OFF for selector 3, and OFF for selector 4

1 2

Pin No. Pin Name

1 VCC12_PS

2 GND

FAN1

Pin No. Pin Name

1 EXT_RXD

2 GND

3 EXT_TXD

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 41 42

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Lanner LVC-5000(N4) Manual de usuario Pagina 22

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