Delta Tau TURBO UMAC CPU Uživatelský manuál stáhnout pdf (Strana 20)

UMAC Turbo CPU/Communications Board Hardware Manual

Board Jumpers 14

E19: Watchdog Disable Jumper

E Point and

Physical Layout

Description

Default

Jump pin 1 to 2 to disable Watchdog timer (for test purposes only).

Remove jumper to enable Watchdog timer.

No jumper installed

E20 – E22: Power-Up/Reset Load Source

E Point &

Physical Layout

Description

Default

E20:

To load active memory from flash IC on power-up/reset/remove

jumper E20;

Jump E21 pin 1 to 2

Jump E22 pin 1 to 2.

Other combinations are for factory use only; the board will not

operate in any other configuration.

No E20 jumper

installed

E21 and E22, jump

pin 1 to 2.

E21:

E22:

E23: Firmware Reload Enable

E Point and

Physical Layout

Description

Default

Install jumper to reload firmware through the communications port.

Remove jumper for normal operations.

No jumper installed

E25A – E25C: Flash Memory Bank Select

E Point and

Physical Layout

Description

Default

E25A:

Remove all three jumpers to select flash memory bank with factory-

installed firmware.

Use other configuration to select one of the seven other flash

memory banks.

No jumpers installed

E25B:

E25C:

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 48 49

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