TMCM-343 Hardware Manual (V1.07 / 2011-JUN-08)
19
Copyright © 2011, TRINAMIC Motion Control GmbH & Co. KG
7.6.3
One limit switch for circular systems
If a circular system is used (Figure 7.10), only one reference switch is necessary, because there are no
end-points in such a system.
motor
ref switch
REF _ L _x
eccentric
Figure 7.10: One reference switch
7.7
Serial peripheral interface (SPI)
On-board communication is performed via the Serial Peripheral Interface (SPI). The microcontroller
acts as master. For adaptation to user requirements, the user has access to this interface via the 68-
pin connector. Furthermore three chip select lines can be used for addressing of external devices.
Pin Direction
Name
Limits
Description
11
out
SPI_SEL0
TTL
Chip Select Bit0
13
out
SPI_SEL1
TTL
Chip Select Bit1
15
out
SPI_SEL2
TTL
Chip Select Bit2
12
out
SPI_CLK
TTL
SPI Clock
14
in
SPI_MISO
TTL
SPI Serial Data In
16
out
SPI_MOSI
TTL
SPI Serial Data Out
Table 7.8: Pinout SPI
7.8
Additional inputs and outputs
The module is equipped with eight TTL input pins and eight TTL output pins, which are accessible via
the 68-pin connector. The input pins can also be used as analogue inputs.
Pin Direction Name Limits
Description
45
in
INP_0
TTL
digital and analogue input pin 0, input
47
in
INP_1
TTL
digital and analogue input pin 1, input
49
in
INP_2
TTL
digital and analogue input pin 2, input
51
in
INP_3
TTL
digital and analogue input pin 3, input
53
in
INP_4
TTL
digital and analogue input pin 4, input
55
in
INP_5
TTL
digital and analogue input pin 5, input
57
in
INP_6
TTL
digital and analogue input pin 6, input
59
in
INP_7
TTL
digital and analogue input pin 7, input
46
out
Out_0
TTL
digital output pin 0, output
48
out
Out_1
TTL
digital output pin 1, output
50
out
Out_2
TTL
digital output pin 2, output
52
out
Out_3
TTL
digital output pin 3, output
54
out
Out_4
TTL
digital output pin 4, output
56
out
Out_5
TTL
digital output pin 5, output
58
out
Out_6
TTL
digital output pin 6, output
60
out
Out_7
TTL
digital output pin 7, output
Table 7.9: Additional I/O pins
7.9
Miscellaneous connections
