EV2300 Datasheet, PDF (3/18 Pages) Texas Instruments – EVM INTERFACE BOARD

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2.1 Overview
The EV2300 is enclosed and is provided as shown.
Interfaces
2.2 EV2300 Controller
The EV2300 controller is a bq8012 running at 4 MHz. The controller firmware is stored in flash memory
and is executed by the core at power-up after the boot ROM code verifies the integrity words.
The controller communicates with target device(s) through either: a 2-wire SMBus communication port, a
1-wire HDQ port, or a 2-wire E²PROM I²C port. The 2-wire SMBus communication port supports both
SMBus and I²C protocols.
2.3 USB Interface (USB)
The interface board connects to a USB port (version 1.1) on a host computer and is powered from the
port. All communication over the USB is proprietary and does not fit any USB-defined device classes.
Therefore communication with the device requires a loader and driver from Texas Instruments.
The loader enumerates the device (determines it is present on the USB), then loads the EV2300 controller
firmware for the USB interface. Once the firmware load is complete, the loader sends a command to the
USB interface IC to execute the new program and the loader driver exits. A new driver takes control and
enumerates the EV2300 and makes the device present to programs running on the host.
The installer for the USB EVB installs:
1. A loader driver
2. A binary to load onto the USB interface IC
3. An EV2300 controller driver for direct access to the device
4. An EV2300 DLL for application access to the device
SLUU159C – February 2005 – Revised January 2012
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EV2300 EVM Interface Board
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