Acrosser AR-B1550 Manuel d'utilisateur télécharger pdf (Page 17)

AR-B1550 User’s Guide

3.2.3 Reset Header (J1)

The J1 is used to connect to an external reset switch. Shorting these two pins will reset the system.

1 Reset+

2 Reset-

3.2.4 Power Connector (J3)

The J3 is an 8-pin power connector. It’s the standard connectors on all Acrosser boards.

1 8

1 GND

2 VCC

3 VCC

4 GND

5 GND

6 12V

7 REVERSED

8 REVERSED

3.2.5 CPU Select

(1) CPU Clock Multiplier Select (JP1)

JP1

1 3

4 6

1-2 3-4 5-6 Multiplier Note

CLOSE CLOSE CLOSE 4X

CLOSE CLOSE OPEN 10X

CLOSE OPEN CLOSE 9X

CLOSE OPEN OPEN 5X

OPEN CLOSE CLOSE Reserved

OPEN CLOSE OPEN 6X Factory Preset

OPEN OPEN CLOSE 7X

OPEN OPEN OPEN Reserved

JP1: CPU Clock Multiplier

(2) CPU Base Clock Select (JP2)

JP2

1-2 3-4 Base Clock

PCI Clock

ON ON 50MHz 25MHz

OFF ON 66.6MHz 33.3MHz

ON OFF 60MHz 30MHz

JP2: CPU Base Clock

(3) CPU Logic Core Voltage Select (SW2)

OFF

SW2 -- Factory Default Setting

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 31 32

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Acrosser AR-B1550 Manuel d'utilisateur Page 17