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4.2.12. Asynchronous Serial Ports
Serial Port Signals
Request to Send handshake line for serial port 4
Clear to Send handshake line for serial port 4
Request to Send handshake line for serial port 5
Clear to Send handshake line for serial port 5
Reference Schematic
C116 0.1UF/25V/4
C94 0.1UF/25V/4
U15
SP3232ECY -L
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2-OUT
7
R2-IN
8
R2-OUT
9
T2-IN
10
T1-IN
11
R1-OUT
12
R1-IN
13
T1-OUT
14
GND
15
VCC
16
C96
0.1UF/25V/4
C105 0.1UF/25V/4
+5V_VCC
C95
0.1UF/25V/4
RS232_RX2
RS232_TX2
CN15
HK_DF11-12S-PA66H
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
RS232_CTS#5
RS232_RX5
RS232_TX5
RS232_RTS#5
UART2_TX13
+5V_VCC
RS232_TX1
RS232_RX1
UART2_RX13
RS232_CTS#5
RS232_RX5
RS232_TX5
RS232_RTS#5
UART5_CTS#13
UART5_RTS#13
C97 0.1UF/25V/4
U16
SP3232ECY -L
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2-OUT
7
R2-IN
8
R2-OUT
9
T2-IN
10
T1-IN
11
R1-OUT
12
R1-IN
13
T1-OUT
14
GND
15
VCC
16
C113
0.1UF/25V/4
C119 0.1UF/25V/4
C117 0.1UF/25V/4
+5V_VCC
C118
0.1UF/25V/4
UART5_RX13
UART5_TX13
RS232_RX2
RS232_TX2
C121 0.1UF/25V/4
RS232_RX1
RS232_TX1
UART1_RX13
UART1_TX13
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