EVAL6470 Datasheet, PDF (9/11 Pages) STMicroelectronics – SPI with daisy-chain feature

EVAL6470
Connection to IBU universal interface board
2
Connection to IBU universal interface board
The EVAL6470 should be connected to the interface board (STEVAL-PCC009V2 or
STEVAL-PCC009V1), and the following steps performed:
1. Connect the interface board to the PC through the USB cable
2. If requested, install interface board drivers
3. Verify interface board operation (check if operation LED diode is turned on)
4. Connect the interface board 10-pin connector to the EVAL6470 J10 connector (SPI_IN)
through the 10-pole flat cable
5. Connect motor phases to the EVAL6470 J2 and J3 connectors
6. Connect the power supply (8 V to 45 V) to the EVAL6470 J4 connector
t(s) ^{7. Start the dSPIN Evaluation tool.}
duc 2.1
Obsolete ^{Product(s) - Obsolete Pro Caution:}
Daisy-chain mode
More EVAL6470 boards can be connected in daisy chain mode. This way you can control up
to eight motors using a single communication board (STEVAL-PCC009V2 only).
To drive two or more boards in daisy chain configuration:
1. Connect the interface board to the PC through the USB cable
2. If requested, install the interface board drivers
3. Verify interface board operation (check if the operation LED diode is turned on)
4. Connect the interface board 10-pin connector to the first EVAL6470 J10 connector
(SPI_IN) through the 10-pole flat cable
5. Open the JP2 jumper of EVAL6470
6. Connect the J11 connector (SPI_OUT) of the previous EVAL6470 to the J10 connector
(SPI_IN) of the next one through the 10-pole flat cable
7. Repeat point 5 and 6 for all the others board of the chain but the last one.
8. Check the JP2 jumpers of EVAL6470 boards: all the jumpers but the last one should be
opened
9. Check the JP7 jumpers of EVAL6470 boards: all the jumpers should be in the same
configuration (STCK or STBY)
Increasing the number of devices connected in chain could degrade SPI communication
performances. If communication issues are founded, try to reduce SPI clock speed.
Figure 6. Daisy chain configuration
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Doc ID 018622 Rev 1
9/11