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Using the Software: ADS1299 Control Registers and GUI

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GPIO and Other Registers tab

–

•

Analysis tab: Provides different ways to analyze captured data in the time or frequency domain, with a

series of related sub-tabs:

–

Scope tab

–

FFT tab

–

Histogram tab

•

Save tab: Provides options for saving data

5.2

Global Channel Registers

The first section under the Channel Registers→Global Channel Registers tab allows the user to

manipulate the entire ADS1299 configuration and lead-off registers. The Global Channel Registers box

includes Configuration Register 1 (controls daisy-chain/MRB mode, clock connection, and data rate);

Configuration Register 2 (controls internal test source amplitude and frequency); Configuration Register 3

(controls the reference buffer power-up/-down processes, the reference voltage, the bias drive

enable/disable, and the bias reference); and the Lead-Off Control Register (controls the comparator

threshold and the magnitude and frequency of the lead-off signal). shows the GUI panel to manipulate

these registers and the respective settings for each.

Figure 16. Channel Registers GUI for Global Registers

5.3

Channel Control Registers

The second section under the Channel Registers tab is the Channel Control Registers box. This panel

allows the user to uniquely configure the front-end MUX for each channel. Additionally, at the top of the

Channel Control Registers box is the option to globally set all channels to the same setting. The channel-

specific MUX is illustrated in Figure 17. The panel snapshot for the channel control registers is shown in

Figure 18. Figure 19 shows the register bit to control the switches which connect all channels negative

input to SRB1 pin. This bit is located in “GPIO and other registers” tab.

SLAU443 – May 2012

EEG Front-End Performance Demonstration Kit

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