Delta Tau PMAC2 Manual de usuario descargar pdf (Pagina 9)

Turbo PMAC2 VME Hardware Reference

CPU Board E-Point Descriptions 5

CPU BOARD E-POINT DESCRIPTIONS

E1: 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

E2-E3: Expansion Port Configure

(Prototype boards {-104 and earlier} only)

E Point and

Physical Layout

Description Default

Jump pin 1 to 2 to permit use of Acc-24 expansion boards.

Remove jumper to permit use of unmodified (pin 41 intact)

Option 2 DPRAM board

Jumper installed

Jump pin 1 to 2 to permit use of Acc-24 expansion boards.

Remove jumper to permit use of unmodified (pin 42 intact)

Option 2 DPRAM board

Jumper installed

Note: Production versions of the Turbo CPU board are built with circuit traces providing the equivalent of E2

and E3 ON. To use with an Option 2 DPRAM board, pins 41 and 42 on the 50-pin connector of the Option 2

board must be clipped in order to be able to operate properly. All Option 2 boards built since Turbo PMAC

production began have been built with these pins clipped.

E4 – E6: Power-Up/Reset Load Source

E Point and

Physical Layout

Description Default

Remove jumper E4;

jump E5 pin 1 to 2;

jump E6 pin 2 to 3;

to read flash IC on power-up/reset.

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

operate in any other configuration

No E4 jumper

installed;

E5 and E6 jump pin

1 to 2

E7: Firmware Reload Enable

E Point and

Physical Layout

Description Default

Jump pin 1 to 2 to reload firmware through serial or bus port

Remove jumper for normal operation.

No jumper installed

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 40 41

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Delta Tau PMAC2 Manual de usuario Pagina 9

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