TMCM-1310 Datasheet, PDF (15/22 Pages) TRINAMIC Motion Control GmbH & Co. KG. – MODULE FOR STEPPER MOTORS

TMCM-1310 V1.2 Hardware Manual (Rev. 1.12 / 2013-JUL-05)
15
3.4 Communication
3.4.1 USB
For remote control and communication with a host system the TMCM-1310 provides a USB 2.0 full-speed
(12Mbit/s) interface. As soon as the USB-host is connected the module accepts commands via the USB
interface. The TMCM-1310 supports USB self powered operation with external power supply via the power
supply connector and USB bus powered operation without this external power supply.
USB BUS POWERED OPERATION
During USB bus powered operation only the core digital circuit parts - microcontroller and EEPROM - are
operational. Motor movements are not possible. This mode has been implemented in order to enable
configuration, parameter setting, read-out, firmware updates, etc. by connecting an USB cable between
the module and an USB-host. No additional cabling or external devices (e.g. power supply) are required.
Please note that the module might draw current from the USB +5V bus supply even in USB self powered
operation. This depends on the voltage level of this supply.
3.5 Inputs and Outputs
3.5.1 Encoder Input
The encoder connector offers support either for connection of an incremental encoder with A/B signals
and an optional N/I-channel or for connection of an absolute position encoder with SSI interface.
Encoders with +5V TTL, open-collector or differential output signals can be connected directly. A +5V
output - available at one connector pin - can be used for the encoder circuit supply. The on-board +5V
switching voltage regulator has been designed to provide a maximum of 100mA for external circuits. This
100mA supply is intended for the operation of an external encoder and for the reference switch circuit,
also.
Termination
jumper
+5V
A/B/N encoder SSI encoder
configuration configuration
A+ (CS+)
A- (CS-)
B+ DATA+
B- DATA-
N+ CLOCK+
N- CLOCK-
+5V
3k3
Figure 3.3 Encoder input circuit (simplified diagram)
3k3
GND
microcontroller
microcontroller
microcontroller
microcontroller
microcontroller
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