Datasheet

Hardware Overview

2.2.3 16-bit 28-pin Starter Development Board Connector J2

The two converter stage sections of the Daughter Board can be controlled using the

16-bit 28-pin Starter Development Board. Table 2-1 lists all of the power and signal

connections on the Daughter Board J2 connector to the user interface with the 16-bit

28-pin Starter Development Board. See Figure A-6 for the location of this connector.

TABLE 2-1: SIGNAL AND POWER CONNECTION FOR 16-BIT 28-PIN

STARTER DEVELOPMENT BOARD (J2)

Pin Number

Primary

Assignment Primary Use

1 NC Not Connected

2 AN0 Analog Input 0 (Buck Converter 1 current)

3 AN1 Analog Input 1 (Buck Converter 1 voltage)

4 AN2 Analog Input 2 (Buck Converter 2 current)

5 AN3 Analog Input 3 (Buck Converter 2 voltage)

6 AN4 Analog Input 4 (Input Voltage)

7 NC Not Connected

SS Ground reference for logic and I/O pins

9 NC Not Connected

10 NC Not Connected

11 NC Not Connected

12 NC Not Connected

13 V

DD Positive supply for logic and I/O pins

14 NC Not Connected

15 RB15 PMBUSAUX2

16 RB5 PMBUSAUX1

17 SCL SCL/TX

18 SDA SCL/RX

19 V

SS Ground reference for logic and I/O pins

20 VDD +3.3V_DIG

21 PWM3H PWM Boost Converter

22 I/O Load

23 PWM2H PWM 2 High Output (Buck Converter 2)

24 PWM2L PWM 2 Low Output (Buck Converter 2)

25 PWM1H PWM 1 High Output (Buck Converter 1)

26 PWM1L PWM 1 Low Output (Buck Converter 1)

27 NC Not Connected

28 +9V Input Voltage for two buck stages