Iei-integration NANO-LX v1.00 Manual de usuario descargar pdf (Pagina 83)

NANO-LX CPU Card

3.4.3 COM3 RS422/RS485 Select Jumper

Jumper Label: JP3

Jumper Type: 3-pin header

Jumper Settings: See Table 3-38

Jumper Location: See Figure 3-33

The JP3 jumper sets the COM3 connector type to RS-422 or RS-485.

JP3 Description

1-2 UART-2 RxD Signal connect to RS-422 (Default)

2-3 UART-2 RxD Signal connect to RS-485

Table 3-38: JP3 Jumper Settings

3.4.4 AT/ATX Power Mode Select Jumper

Jumper Label: JP4

Jumper Type: 2-pin header

Jumper Settings: See Table 3-39

Jumper Location: See Figure 3-33

The JP4 jumper block controls the connection to a power supply.

The CN5 connector is used to connect a chassis power On/Off button using an adapter

cable and is configured through the JP4 jumper. The CN5 connector has two operational

modes:

1. Using ATX power: CN5 connects to an externally implemented power switch, and

the JP4 jumper should be left open.

2. Using AT power: The pins on JP4 are shorted by a jumper cap. JP4 should be

shorted by default as the AMD Southbridge is designed without the consideration

for a power button signal. The shorted JP4 provides a hardware feedback to

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Iei-integration NANO-LX v1.00 Manual de usuario Pagina 83