Datasheet

www.ti.com

Hardware Overview

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

C), 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 Description

P0 0 Push switch (optional GPIO/pairing switch)

P0 1 —

P0 2 Accelerometer interrupt (optional)

P0 3 LED 1-o-Clock

P0 4 LED 2-o-Clock

P0 5 LED 3-o-Clock

P0 6 Haptic Driver Enable

P0 7 LED 4-o-Clock

P1 0 LED 12-o-Clock

P1 1 —

P1 2 LED 5-o-Clock

P1 3 LED 6-o-Clock

P1 4 LED 7-o-Clock

P1 5 LED 8-o-Clock

P1 6 LED 9-o-Clock

P1 7 LED 10-o-Clock

P2 0 LED 11-o-Clock

P2 1 DD

P2 2 DC

P2 4 Crystal Oscillator

P2 3 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 I

C 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.

SLOU391–May 2014 DRV2605EVM-BT User's Guide

Submit Documentation Feedback