Signal
Group |
Signal Name |
Dir |
Lvl |
# |
Pin |
Description |
| ISA |
AEN |
I |
|
1 |
|
Must be low for IO operation |
| ISA |
BALE |
I |
|
1 |
|
I think I can ignore this one. |
| ISA |
CLK |
I |
|
1 |
|
ISA bus clock, assign to one of the global clocks. |
| ISA |
SA(15:0) |
I |
|
16 |
|
System addresses used for IO operations. Should check all so
I can use the extended IO address space. |
| ISA |
-IO CS 16 |
O |
|
1 |
|
Tells the system we are a 16 pit device. Drive it low as soon
as we have an address match. |
| ISA |
-IO CH CK |
O |
|
1 |
|
NMI to system if the device has an uncorectable error. Not likely
to be used. |
| ISA |
-IOR |
I |
|
1 |
|
Read strobe line for IO operation. |
| ISA |
-IOW |
I |
|
1 |
|
Write stobe line for IO operation. |
| ISA |
SD(15:0) |
I/O |
|
16 |
|
Data Bus |
| ISA |
I/O CH RDY |
O |
|
1 |
|
Allows us to extend the bus cycle. Not likely needed. |
| ISA |
IRQ |
O |
|
1 |
|
Interupt ouput pin. Use a jumper to tie it to one of the system
IRQ lines. |
| ISA |
OSC |
I |
|
1 |
|
System oscilator. Assign to one of the global clock pins. |
| ISA |
RESET DRV |
I |
|
1 |
|
Reset input from the system. |
| ISA |
-SBHE |
I |
|
1 |
|
System high Byte Enable tells us the system is putting data on the
(15:8) data pins. |
| Motor A |
MA-PWM |
O |
|
1 |
|
PWM output for motor A. |
| Motor A |
MA-Direction |
O |
|
1 |
|
Direction output for motor A. |
| Motor A |
MA-Brake |
O |
|
1 |
|
Brake output for motor A. |
| Motor A |
MA-Thermal |
I |
|
1 |
|
Thermal input frlag from motor A. |
| Quad A |
QA-CH-A |
I |
|
1 |
|
Quadrature channel A input for motor A. |
| Quad A |
QA-CH-B |
I |
|
1 |
|
Quadrature channel B input for motor A. |
| Motor B |
MB-PWM |
O |
|
1 |
|
PWM output for motor B. |
| Motor B |
MB-Direction |
O |
|
1 |
|
Direction output for motor B. |
| Motor B |
MB-Brake |
O |
|
1 |
|
Brake output for motor B. |
| Motor B |
MB-Thermal |
I |
|
1 |
|
Thermal input frlag from motor B. |
| Quad B |
QB-CH-A |
I |
|
1 |
|
Quadrature channel A input for motor B. |
| Quad B |
QB-CH-B |
I |
|
1 |
|
Quadrature channel B input for motor B. |
| MISC |
50MHz |
I |
|
1 |
|
Attach to one of the global clock lines. This will be the refference
clock for PWM gneration. |
| MISC |
LED(7:0) |
O |
|
8 |
|
LED ouputs for status indicators. |
| MISC |
Local Reset |
I |
|
1 |
|
Local on the board reset input. |
| MISC |
All Stop |
I |
|
1 |
|
All stop signal. When grounded coses a shutdown of the PWM systems. |
| Total |
|
|
|
67 |
|
8 not needed. |