C P 2 11 0 - E K
6
Rev. 0.3
7.2. Universal Serial Bus (USB) Interface (P2)
A Universal Serial Bus (USB) connector (P2) is provided to facilitate connections to the USB interface on the
CP2110. See Table 2 for the USB pin definitions.
7.3. UART Signals (P1, J1)
An RS-232 transceiver circuit and DB9 connector (P1) are provided on the evaluation board to connect the CP2110
virtual serial port to external serial devices. See Table 3 for the RS-232 P2 pin descriptions. The J1 connector is
provided to facilitate direct access to the CP2110’s UART signals. Shorting blocks on J1 are required to connect
the UART signals to P2. See Table 4 for J1 pin descriptions.
Table 2. USB Connector Pin Descriptions
Pin #
Description
1
VBUS
2
D–
3
D+
4
GND (Ground)
Table 3. RS-232 Pin Descriptions
Pin
Signal
CP2110
Direction
Description
2
RXD
Input
Receive Data
3
TXD
Output
Transmit Data
5
GND
Ground
7
RTS
Output
Request to Send
8
CTS
Input
Clear to Send
Table 4. J1 Pin Descriptions
Pins
Signal
CP2110
Direction
Description
1-2
TXD
Output
Transmit Data
3-4
RXD
Input
Receive Data
5-6
RTS
Output
Request to Send
7-8
CTS
Input
Clear to Send
