DRV2605EVM-BT Datasheet, PDF (8/34 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – evaluation kit for the DRV2605 ERM and LRA Haptic Driver.

Hardware Overview
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5.4 LSR Bluetooth Module (CC2541 Inside)
The TiWi-uB1 module with the TI-CC2541 chip inside it, handles the communication link between the
DRV2605EVM-BT and the iOS device. The module is used to talk to the onboard devices (primarily over
I²C), change LED settings, and maintain a steady communication channel. The module is FCC certified
(ID: TFB-BT2). Complete documentation on the certification is available at: http://www.lsr.com/wireless-
products/tiwi-ub1.
Table 1. Port Mapping LSR-CC2541 BLE Module
Port Name
P0 0
P0 1
P0 2
P0 3
P0 4
P0 5
P0 6
P0 7
P1 0
P1 1
P1 2
P1 3
P1 4
P1 5
P1 6
P1 7
P2 0
P2 1
P2 2
P2 4
P2 3
Description
Push switch (optional GPIO/pairing switch)
—
Accelerometer interrupt (optional)
LED 1-o-Clock
LED 2-o-Clock
LED 3-o-Clock
Haptic Driver Enable
LED 4-o-Clock
LED 12-o-Clock
—
LED 5-o-Clock
LED 6-o-Clock
LED 7-o-Clock
LED 8-o-Clock
LED 9-o-Clock
LED 10-o-Clock
LED 11-o-Clock
DD
DC
Crystal Oscillator
Crystal Oscillator
5.5 Debug Header
A new firmware download is possible by connecting a CC Debugger to the on-board header, J1. The
pinout for the debug header is listed on the schematic. Although not all ten pins are required to flash the
CC2541 module, they are available on the board to maintain compatibility with the CC Debugger. More
information is available in Section 7 .
5.6 USB Connector
The USB connector is installed on the DRV2605EVM-BT for an additional power supply than a battery
source. There is no communication enabled over the USB.
5.7 Testpoints
The testpoints give exclusive access to the I²C lines compatible with user friendly 100-mil spacing
headers. They can be used to connect external microcontrollers. The TRG testpoint can be used to
provide PWM input to the DRV2605. See Section 5.11 to learn more about converting the audio signal to
haptic effects.
8
DRV2605EVM-BT User's Guide
Copyright © 2014, Texas Instruments Incorporated
SLOU391 – May 2014
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