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RX72T CPU Card
6.4
Connecting the Serial Communication
The product communicates with the UART via the serial communication connectors. There are three serial
communication connectors: CN4, CN6, and CN7. Table 6-5 lists their pin assignments. Use CN6 when using a tool
such as waveform display in conjunction with the INV-BRD.
Table 6-5 Pin Assignments of Serial Communication Connectors (CN2, CN4, CN6)
Connector No.
CN2
SCI5
(DNF)
CN4
SCI8
(DNF)
CN6
SCI6
6.5
Hall Sensor Signal Input
The product is equipped with a Hall sensor signal input connector. Using this connector, it is possible to input the Hall
sensor signal from the motor supplied with the Motor RSSK directly to the product. The signal input to the product is
pulled up to 5 V and passed through an RC filter before being input to the RX72T. Table 6-6 lists the pin assignments
of the Hall sensor signal input connector, and Table 6-7 lists connector information.
Table 6-6 Pin Assignments of Hall Sensor Signal Input Connector (CN5)
Pin No.
Pin Function
1
5V
2
GND
3
HALL_U_1
4
HALL_V_1
5
HALL_W_1
Part
Connector (CN5)
R12UZ0031EJ0100 Rev.1.00
Feb. 21, 2019
Pin No.
1
2
3
4
1
2
3
4
1
2
3
4
Table 6-7 Hall Sensor Signal Input Connector Information
Product No.
B5B-XH-A
Pin Function
5V
RX72T transmit side
RX72T receive side
GND
5V
RX72T transmit side
RX72T receive side
GND
5V
RX72T transmit side
RX72T receive side
GND
RX72T Connection Pins
VCC
VSS
P23/IRQ11
P24/IRQ4
P25/IRQ10
Manufacturer
J.S.T. Mfg. Co. Ltd.
User's Manual
RX72T Connection Pins
VCC
PB5/TXD5/CTX0
PB6/RXD5/CRX0
VSS
VCC
PC1/ TXD8
PC0/ RXD8
VSS
VCC
PB0/TXD6
PB1/RXD6
VSS
Page 15 of 29
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