C P 2 1 3 0 - E K
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Rev. 0.2
10.7. LED Headers (JP3, JP4, and JP5)
Headers JP3, JP4, and JP5 are provided to allow access to the GPIO pins on the CP2130. Place shorting blocks
on JP3, JP4, and JP5 to connect the GPIO pins to the ten green LEDs, D1–D10, and the one red LED, D11. These
LEDs can be used to indicate active communications through the CP2130. Table 5 lists the LED corresponding to
each header position.
10.8. SPI Loopback Header (JP6)
To short the SPI MOSI and MISO signals, install a shorting block on JP6. This shorting block should be removed
during normal SPI operation. See Table 6 for the SPI loopback header pin definitions.
10.9. ADC VDD Header (JP9)
This header provides access to the ADC VDD pin. Install a shorting block on JP9 to provide power to the ADC from
VIO. See Table 7 for the ADC VDD header pin definitions.
Table 5. JP3, JP4, and JP5 LED Header Locations
GPIO Pin
LED
Pins
GPIO.0 / CS0
D1
JP3[1:2]
GPIO.1 / CS1
D2
JP3[3:4]
GPIO.2 / CS2
D3
JP3[5:6]
GPIO.3 / CS3 / RTR
D4
JP3[7:8]
GPIO.4 / CS4 / EVTCNTR
D5
JP3[9:10]
GPIO.5 / CS5 / CLKOUT
D6
JP3[11:12]
GPIO.6 / CS6
D7
JP3[13:14]
GPIO.7 / CS7
D8
JP3[15:16]
GPIO.8 / CS8 / SPIACT
D9
JP3[17:18]
GPIO.9 / CS9 / SUSPEND
D10
JP4[1:2]
GPIO.10 / CS10 / SUSPEND
D11
JP5[1:2]
Table 6. SPI Loopback Header Pin Definitions
Pin #
Definitions
1
MISO
2
MOSI
Table 7. ADC VDD Header Pin Definitions
Pin #
Definitions
1
VIO
2
ADC VDD