8.3.5.1 EM Configuration
The EM connector allows configuration of the CC2564MODN as either the master or slave. The default
configuration is a master role for the module through the EM connectors.
To change the direction of the PCM so the module is configured as the slave, do the following:
1. Connect resistor R18.
2. Remove resistor R19 on the U4 level shifter. (See
for the positions of the resistors.)
Figure 8-8. Resistors to Change the Direction of PCM
The board can also be set up to use audio features. To use audio features, the R11 resistor must be
disconnected (DNI) on the U4 level shifter. (See
for the positions of the resistors.)
Figure 8-9. R11 DNI to Enable Audio Features
8.3.5.2 COM Configuration
To configure the COM connector, pull the resistors connected to U4 high to switch the direction on the level
shifter. The signal in the COM connector can be configured to run in either direction without any changes to the
board components.
Hardware Description
16
Dual-Mode Bluetooth
®
CC2564 Module Evaluation Board
SWRU390A – AUGUST 2014 – REVISED AUGUST 2021
Copyright © 2021 Texas Instruments Incorporated