Custom Audio Electronics PP54 EVO, Руководство пользователя

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1 8
RS232 SERIAL INTERFACE
Female RJ45 connector
J5
1 RTS (out) When +VRS232, device is ready to receive data
2 CTS
3 DTR (in) During reception, takes the values -VRS232 and +VRS232 depending on data
4 GND
5 DSR
6 RXD (in) During reception, takes the values -VRS232 and +VRS232 depending on data
7 TXD
(out)
During transmission, takes the values -VRS232 and + VRS232 depending on data
8 DTR (in) During reception, takes the values -VRS232 and + VRS232 depending on data
Given the presence of the RS232 standard, logic value “0” corresponds to the voltage value +VRS232 (voltage value
b3 Vdc and +15 Vdc) and logic value “1” corresponds to the voltage value -VRS232 (voltage value between -3
Vdc and -15 Vdc.
The following picture shows an example of connection between the device and a personal computer using an 8 pin RJ45
male and a 9 pin RS232 serial connector.
DEVICE PC
DCD
RXD
TXD
GND
DSR
CTS
DTR
TXD
RXD
GND
DTR
RTS
RTS
CTS
D
B9
1
2
3
4
5
6
7
8
9
R
J4
5
1
2
3
4
5
6
7
8
When use a serial cable, we recommend the installation of a ferrite core on the power supply cable.
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