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EVM Hardware and Software Setup
9
SLUU258B – November 2007 – Revised July 2017
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Copyright © 2007–2017, Texas Instruments Incorporated
bq2022A Evaluation Software
11. After installing the USB drivers for EV2300, double-click on the Setup.exe icon that is under the
Software/bq2022A Evaluation Software folder.
12. Follow the instructions on screen during the installation of evaluation software.
13. The setup program installs a Windows application group.
7.2
Hardware Connection
The bq2022AEVM has three hardware components. :
1. The bq2022AEVM circuit module
2. The PC interface board, (EV2300 – purchased separately)
3. The PC
Use the following steps to configure the hardware for interface to the PC:
1. Connect the HPA125 board with the EV2300 PC interface board using
Table 4
as a pin connection
guide.
2. Connect the USB cable to the EV2300 and the PC USB port.
The bq2022AEVM is now set up for normal operation.
Table 4. Wire Connection
bq2022AEVM (HPA125 Rev. B)
EV2300
SDQ
HDQ
VSS
GND
PROG
VOUT
To program the EPROM of bq2022AEVM, a 12-V pulse must be generated on the SDQ line. The HPA125
board has an additional circuit included that permits generating this pulse when using a power supply set
to 12 V and the VOUT output of the EV2300. The evaluation software controls this pulse for EPROM
programming.
When programming the EPROM, it is expected that a 12-V supply must be connected to the HPA125
board at the 12-V input terminal of the HPA125 board. Ensure that the ground of the power supply is
connected to VSS of the board.
A jumper (J3) must be connected when using the EPROM programming circuit.
7.2.1
Normal Operation
Normal operation includes performing any of the ROM commands, reading the 1 K-bit EPROM and
reading the EPROM Status Memory.
7.2.2
EPROM Programming
To program EPROM registers, a 12-V pulse must be sent across the SDQ line after sending the code
0x5A during a write command. See the bq2022A data sheet (
SLUS724
) for a specific description of
EPROM programming requirements. When programming EPROM registers, the following must be
ensured:
•
J3 jumper is connected.
•
VOUT output of EV2300 is connected to PROG input of HPA125 board.
•
Power supply set to 12 V is connected across the 12 V and VSS inputs of HPA125 board.
