C P 2 1 0 3 - E K
4
Rev. 0.4
6. Target Board
The CP2103 Evaluation Kit includes an evaluation board with a CP2103 device pre-installed for evaluation and pre-
liminary software development. Numerous input/output (I/O) connections are provided to facilitate prototyping using
the evaluation board. Refer to Figure 3 for the locations of the various I/O connectors.
J1
DB9 connector for RS232 interface
J2
UART signal access connector
J3
USB connector for USB interface
J4, J7
Power Connector
J5, J6
GPIO Access Connector
D0–D3
Green GPIO LEDs
D4
Red SUSPEND indicator LED
Figure 3. CP2103 Evaluation Board
6.1. LED Headers (J5, J6)
Connectors J5 and J6 are provided to allow access to the GPIO pins on the CP2103. Place shorting blocks on J5
and J6 to connect the GPIO pins to the four green LEDs D0 - D3. These LEDs can be used to indicate active
communications through the CP2103. Table 1 shows the LED corresponding to each header position.
6.2. Universal Serial Bus (USB) Interface (J3)
A Universal Serial Bus (USB) connector (J3) is provided to facilitate connections to the USB interface on the
CP2103. See Table 2 for the USB pin definitions.
Table 1. J5 and J6 LED Locations
LED
Pins
D0
J5[3:4]
D1
J5[1:2]
D2
J6[3:4]
D3
J6[1:2]
Table 2. USB Connector Pin Descriptions
Pin #
Description
1
VBUS
2
D-
3
D+
4
GND (Ground)
J1
CP2103
J3
SUSPEND
J4
J2
Pin 2
Pin 1
J5
J7
J6
D3
D2
D1
D0
_________
D4
RS232
Transceiver
