Figure 8-3. Jumper Configuration; Figure 8-4. Clock Input - Texas Instruments CC2564MODN User Manual

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8.3.3 Slow Clock
8.3.3.1 Clock Inputs
The slow clock can come from an internal or external source. The CC2564MODNEM lets you place the slow
clock on the board (the default setting) or source it from an external source. The CC2564MODN connects to the
SLOW_CLK_IN and can be a digital signal in the range of 0 V to 1.8 V. The frequency accuracy of the slow clock
must be 32.768 kHz + –250 ppm for Bluetooth use (according to the Bluetooth specification).
EM
Connector
Slow Clock
SWRU390A – AUGUST 2014 – REVISED AUGUST 2021
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CC2564MODN
U.FL

Figure 8-3. Jumper Configuration

Level
Shifters
Slow Clock
Oscillator
32.768-KHz
Slow Clock
(Default)
COM
Connector
Slow Clock

Figure 8-4. Clock Input

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Antenna
RF Interface
(Default)
RF Interface
CC2564MODN
SLOW_CLK_IN
®
Dual-Mode Bluetooth CC2564 Module Evaluation Board
Hardware Description
13