User's Manual

Turbo PMAC PCI HRM
12 Jumper Summary
E28: Following-Error/Watchdog-Timer Signal Control – With this jumper connecting pins 2 and
3 (default), the FEFCO/ output on pin 57 of the J8 JMACH1 servo connector outputs the watchdog
timer signal. With this jumper connecting pins 1 and 2, this pin outputs the warning following error
status line for the selected coordinate system.
Caution:
A wrong setting of these jumpers will damage the associated output IC.
E101-E102: Motors 1-4 AENA/EQU Voltage Configure – The U37 driver IC controls the AENA
and EQU signals of motors 1 to 4. With the default sinking output driver IC (ULN2803A or
equivalent) in U37, 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.
Caution:
A wrong setting of these jumpers will damage the associated output IC.
E114-E115: Motors 5-8 AENA/EQU Voltage Configure – The U53 driver IC controls the AENA
and EQU signals of motors 5 to 8. With the default sinking output driver IC (ULN2803A or
equivalent) in U53, 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.
E121: XIN6 Motor Selection – Jump 1-2 to bring the QuadLoss signal for Encoder 6 into register
XIN6 at Y:$070801 bit 6. Jump 2-3 to bring the QuadLoss signal for Encoder 7 into register XIN6 at
Y:$070801 bit 6.
E122: XIN7 Feature Selection – Jump 1-2 to bring the QuadLoss signal for Encoder 8 into register
XIN7 at Y:$070801 bit 7. Jump 2-3 to bring the PowerGood signal into register XIN7 at Y:$070801
bit 7.
Reserved Configuration Jumpers
E109: Reserved for Future Use
Piggyback Turbo CPU Board Jumper Configuration
Watchdog Timer Jumper
Jumper E1 on the Turbo CPU board must be off for the watchdog timer to operate. This is a very
important safety feature, so it is vital that this jumper be off in normal operation. E1 should only be
put on to debug problems with the watchdog timer circuit.
Dual-Ported RAM Source Jumper
On Turbo CPU boards with revision suffixes – 10A and newer, Jumper E2 must connect pins 1 and 2
to access dual-ported RAM (addresses $06xxxx) from the baseboard. If using the Option 2 DPRAM
on the baseboard, jumper E2 must be in this setting.
Jumper E2 must connect pins 2 and 3 to access dual-ported RAM (addresses $06xxxx) through the
JEXP expansion port. If using DPRAM on an external accessory board, Jumper E2 must be in this
setting.
On Turbo CPU boards with revision suffixes 109 and older, there is no jumper for this purpose, and
the boards can access DPRAM from either source, but with less robust buffering.