Delta Data Systems PMAC PCI, Справочник по аппаратуре

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PMAC-PCI Hardware Reference
10 Jumper Summary
Communication Jumpers
PCI Bus Base Address Control
–
The selection of the base address of the card in the I/O space of the
host PC’s expansion bus is assigned automatically by the operating system and it is not selected through a
jumper configuration.
E44-E47: Serial Baud Rate Selection
–The configuration of these jumpers and the particular CPU
Option ordered will determine the baud rate at which PMAC will communicate through its J4 serial port.
For example, when PMAC is ordered with no CPU Options and only the jumpers E45 and E46 are
installed, the baud rate will be set at 9600 baud.
E49: Serial Communications Parity Control
– Jump pin 1 to 2 for NO serial parity; remove jumper for
ODD serial parity.
E54-E65: Interrupt Source Control – These jumpers control which signals are tied to interrupt lines
IR5, IR6 and IR7 on PMAC’s programmable interrupt controller (PIC), as shown in the interrupt
diagram. Only one signal may be tied into each of these lines.
E110: Serial Port Configure – Jump pin 1 to 2 for use of the J4 connector as RS-232. Jump pin 2 to 3
for use of the J4 connector as RS-422.
E111: Clock Lines Output Enable
– Jump pin 1 to 2 to enable the Phase, Servo and INIT lines on the
J4 connector. Jump pin 2 to 3 to disable the Phase, Servo and INIT lines on the J4 connector. E111 on
positions 1 to 2 is necessary for daisy-chained PMACs sharing the clock lines for synchronization.
I/O Configuration Jumpers
WARNING:
A wrong setting of these jumpers will damage the associated output IC.
E1-E2: Machine Output Supply Configure – With the default sinking output driver IC (ULN2803A or
equivalent) in U13 for the J5 JOPTO port outputs, these jumpers must connect pins 1 and 2 to supply the
IC correctly. If this IC is replaced with a sourcing output driver IC (UDN2981A or equivalent), these
jumpers must be changed to connect pins 2 and 3 to supply the new IC correctly.
E7: Machine Input Source/Sink Control – With this jumper connecting pins 1 and 2 (default) the
machine input lines on the J5 JOPTO port are pulled up to +5V or the externally provided supply voltage
for the port. This configuration is suitable for sinking drivers. If the jumper is changes to connect pins 2
and 3, these lines are pulled down to GND – this configuration is suitable for sourcing drivers.
E17A - E17D: Motors 1-4 Amplifier-Enable Polarity Control – Jumpers E17A through E17D control
the polarity of the amplifier enable signal for the corresponding motor 1 to 4. When the jumper is OFF
(default), the amplifier-enable line for the corresponding motor is low true so the enable state is low-
voltage output and sinking current, and the disable state is not conducting current. With the default
ULN2803A sinking driver used by the PMAC PCI on U37, this is the fail-safe option, allowing the circuit
to fail in the disable state. With this jumper ON, the amplifier-enable line is high true so the enable state
is not conducting current, and the disable state is low-voltage output and sinking current. This setting is
not generally recommended.
E17E - E17H: Motors 5-8 Amplifier-Enable Polarity Control – Jumpers E17A through E17D control
the polarity of the amplifier enable signal for the corresponding motor 5 to 8. When the jumper is ON
(default), the amplifier-enable line for the corresponding motor is low true so the enable state is low-
voltage output and sinking current, and the disable state is not conducting current. With the default
ULN2803A sinking driver used by the PMAC PCI on U53, this is the fail-safe option, allowing the circuit
to fail in the disable state. With this jumper OFF, the amplifier-enable line is high true so the enable state
is not conducting current, and the disable state is low-voltage output and sinking current. Generally, this
setting is not recommended.