austriamicrosystems AS5040 Руководство по эксплуатации - Страница 3
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Печатать страницуAS5X40 Demoboard OPERATIONAL MANUAL
3.1.5
Encoder selection switch
The switch SW1 selects the encoder which communicates with the microcontroller through the SSI bus:
1.
Right position (default):
2.
Left Position:
The signals of the synchronous serial interface (DO, CLK, CSn, PROG) and the power supply (3.3V,
GND) of an external device can be connected directly to J6. In this configuration, the data of the serial
interface are displayed on the GUI or the LCD.
In standalone mode, regardless to the demoboard type (AS5040 or AS5140), AS5040 and AS5140 can
•
be attached to J6 and evaluated. See figure 3.
If the GUI is used for operation, additional devices AS5043, AS5143, AS5045 and AS5145 can be
•
connected to J6 and evaluated. In that case, the correct encoder must be selected instead of "Autoselect" in
the Device list of the PC software, see chapter Error! Reference source not found. figure 4.
AS5040 / AS5140
VSS
PROG
Revision 1.0, 29-Jan-2009
Onboard AS5040/AS5140
External AS5040/AS5140 connected on J6
VDD5
VDD33
2.2u
CSn
CLK
DO
Demoboard switched to external
encoder mode
Figure 3: external AS5040/AS5140 connection to the demoboard
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