E17 - E18: Serial Connector Select. Delta Tau PMAC2 VME

PMAC2 VME Hardware Reference Manual

E17 - E18: Serial Connector Select

E17 and E18 control whether the RS-232 or RS-422 serial port is used.

E Point and

Physical Layout

E17

Location Description Default

B2 Jump pins 1 to 2 to use RS-232 serial interface.

Jump pins 2 to 3 to use RS -422 serial interface

E18 C2 Jump pins 1 to 2 to use RS -232 serial interface.

Jump pins 2 to 3 to use RS -422 serial interface

E20A-I: DPRAM Byte Order Control

1-2 jumper installed

1-2 jumper installed

Caution:

All E20A-I jumpers must be in the same setting for DPRAM communications to work.

E Point and

Physical Layout

E20

A 5 (4 3) (2 1)

B 5 (4 3) (2 1)

C 5 (4 3) (2 1)

D 5 (4 3) (2 1)

E 5 (4 3) (2 1)

F 5 (4 3) (2 1)

G 5 (4 3) (2 1)

H 5 (4 3) (2 1)

I 5 (4 3) (2 1)

Location Description Default

C4

C4

C4

C4

C4

D4

D4

D4

D4

Jump pins 1 to 2, and pins 3 to 4, to tie DPRAM data lines 8-15 to VME Bus data lines 8-15, and DPRAM data lines 0-7 to VME Bus data lines 0-7 (Motorola big-endian format)

Jump pins 2 to 3, and pins 4 to 5 to tie DPRAM data lines 8-15 to VME Bus data lines 0-7, and DPRAM data lines 0-7 to VME Bus data lines 8-15 (Intel littleendian format)

E39: Reset-From-Bus Enable

1-2, 3-4 jumpers installed (Motorola format)

E Point and

Physical Layout

E39

Location Description Default

D1 1-2 jumper installed Jump pin 1 to 2 to permit VME Bus reset line to reset

PMAC2.

Remove jumper so VME Bus reset line does not reset

PMAC2.

Jumper Summary 25