Ev2400 Ports - Texas Instruments EV2400 User Manual

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2.1 Overview
The EV2400 ports are shown in
NOTE: The additional power input 5-V port on the EV2400 must not be connected in normal
operation. Normal operation uses power from the USB port.
2.2 EV2400 Controller
The EV2400 controller is an MSP430F5529 running at 4 MHz. The controller firmware is stored in flash
memory and is executed by the core at power-up.
The controller communicates with target device(s) through either: a 2-wire SMBus communication port or
a 2-wire EEPROM I
protocols. CRC-8 checksum verification for the data packets prevents data corruption over the USB.
2.3 USB Interface (USB)
The interface board connects to a USB port (version 1.1 or later) on a host computer and is powered from
the port. All communication over the USB is human Interface device (HID) class. Drivers are built into
Windows and most of the operating systems.
®
2.4 HDQ Interface (HDQ)
This interface port is not currently supported.
2 2
2.5 I C Interface (I C)
This interface allows a host computer to interact with I
EEPROM through a 2-wire I
target device.
Pin
2.1
2.2
2.3
2.4
SLUU446B – June 2011 – Revised August 2014
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Figure 1.
Figure 1. EV2400 Ports
2
C port. The 2-wire SMBus communication port supports both SMBus and I
2
C interface. Connect the data, clock, and a ground reference (VSS) to a
Name
VSS Ground return/reference for I
2
SCL I C clock. Pulled up to 3.3 V with a 20-kΩ resistor. Uses bus acceleration in
positive direction to allow for larger pullup.
2
SDA I C data. Pulled up to 3.3 V with a 20-kΩ resistor. Uses bus acceleration in positive
direction to allow for larger pullup.
VOUT 2 Optional voltage output (future expansion)
Copyright © 2011–2014, Texas Instruments Incorporated
2
C interfaces, such as a battery monitor device and
Description
2
C interface.
EV2400 EVM Interface Board
Interfaces
2
C
3