8 Hardware Description
8.1 Overview
is the high-level block diagram of the CC2564MODNEM board. The oscillator is the default clock with
a frequency accuracy of 32.768 kHz + –250 ppm. The signals from the dual-mode
Bluetooth
CC2564 module
include UART, PCM, nSHUTD, and slow clock. The CC2564MODNEM board has the following connectors:
• EM (default)
• COM
The connectors can supply power to the CC2564MODN through either VBAT_EDGE or VBAT_MCU. For the EM
connector, the signals are controlled through level shifters. The hardware can be configured and modified to use
the slow clock from the connectors. The third connector, the debug header, can be used for testing. The I/Os of
the EM connector are at 3.3 V. The I/Os of the COM connector are at 1.8 V and require hardware modification.
The I/Os for the debug header connector are at 1.8 V and require hardware modification.
CC2564MODN
Slow Clock
VDD_IO
VBAT_MCU
VBAT
VBAT_EDGE
LDO
nSHUTD
nSHUTD
Slow Clock
Slow Clock
U.FL
Debug
Header
COM
Connector
Level
Shifters
EM
Connector
Oscillator
32.768-kHz
Antenna
PCM
UART
PCM
UART
Figure 8-1. CC2564MODNEM Block Diagram
8.2 Connectors
8.2.1 The EM Connector
The EM connectors can mount a variety of TI MCU platforms such as the MSP430 (MSP-EXP430F5529 and
MSP-EXP430F5438) and TM4C (DK-TM4C123G and DK-TM4C129X). The EM I/Os are at 3.3 V. The pin
assignments are for the CC2564MODN side. For example, MODULE_UART_RX refers to the receiving UART
RX pin on the CC2564MODN that connects to the UART TX pin on the MCU.
shows the EM
connector on the board.
shows the standard pinout.
Table 8-1. EM1 Connector Standard Pinout
Pin Number
EM Adaptor Assignment
Pin Number
EM Adaptor Assignment
1
GND
2
N/C
3
MODULE_UART_CTS
4
N/C
5
SLOW_CLK
6
N/C
7
MODULE_UART_RX
8
N/C
9
MODULE_UART_TX
10
N/C
Hardware Description
SWRU390A – AUGUST 2014 – REVISED AUGUST 2021
Dual-Mode Bluetooth
®
CC2564 Module Evaluation Board
9
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