MC2502 View Datasheet(PDF) - PMD
Part Name
Description
MFG CO.
'MC2502' PDF : 51 Pages View PDF
Pin Name and Number Direction
HostMode1 91
HostMode0 5
Input
I/O Chip
Description
These two signals determine the host communications mode, as follows:
HostMode1 HostMode0
0
0
16/16 parallel (16-bit bus, 16-bit instruction)
0
1
8/8 parallel (8-bit bus, 8-bit instruction)
1
0
8/16 parallel (8-bit bus, 16-bit instruction)
1
1
serial
HostData0
12
HostData1
10
HostData2
99
HostData3
98
HostData4
1
HostData5
11
HostData6
97
HostData7
95
HostData8
76
HostData9
74
HostData10 73
HostData11 75
HostData12 2
HostData13 3
HostData14 7
HostData15 6
CPData0
38
CPData1
36
CPData2
35
CPData3
32
CPData4
31
CPData5
37
CPData6
42
CPData7
39
CPData8
18
CPData9
14
CPData10
71
CPData11
13
CPData12
70
CPData13
15
CPData14
69
CPData15
68
Pulse1
21
Pulse2
85
Pulse3
20
Pulse4
79
Direction1
61
Direction2
60
Direction3
59
Direction4
26
Bi-directional,
tri-state
These signals transmit data between the host and the Motion Processor
through the parallel port. Transmission is mediated by the control signals
~HostSlct, ~HostWrite, ~HostRead and HostCmd.
In 16 bit mode, all 16 bits are used (HostData0-15). In 8 bit mode, only the
low-order 8 bits of data are used (HostData0-7). The HostMode0 and
HostMode1 signals select the communication mode this port operates in.
Bi-directional These signals transmit data between the I/O chip and pins Data0-15 of the
CP chip, via the Motion Processor data bus.
Output
Output
These pins provide the Pulse signal to the motor. This signal is always a
square wave, regardless of the pulse rate. A “step” occurs when the
signal transitions from a high state to a low state. For the MC2542 all 4
pins are valid. For MC2522 only Pulse1 and Pulse2 are valid. For
MC2512 only Pulse1 is valid.
Invalid axis pins may be left unconnected.
These pins indicate the direction of motion and work in conjunction with
the pulse signal. A high level on this signal indicates a positive direction
move and a low level indicates a negative direction move. For MC2542
all 4 pins are valid. For MC2522 only Direction1 and Direction2 are valid.
For MC2512 only Direction1 is valid.
Invalid axis pins may be left unconnected.
MC2502 Technical Specifications
31
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