ADS1291IRSMT datasheet(59/83 Pages) TI2

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ADS1291, ADS1292, ADS1292R

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SBAS502C – DECEMBER 2011 – REVISED APRIL 2020

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8.6.1.9 LOFF_STAT: Lead-Off Status (address = 08h)

This register stores the status of whether the positive or negative electrode on each channel is on or off. See the

Lead-Off Detection subsection of the ECG-Specific Functions section for details. Ignore the LOFF_STAT values

if the corresponding LOFF_SENS bits are not set to '1'.

'0' is lead-on (default) and '1' is lead-off. When the LOFF_SENS bits[3:0] are '0', the LOFF_STAT bits should be

ignored.

Figure 64. LOFF_STAT: Lead-Off Status

CLK_DIV

RLD_STAT

(read only)

IN2N_OFF

(read only)

IN2P_OFF

(read only)

IN1N_OFF

(read only)

IN1P_OFF

(read only)

Table 25. LOFF_STAT: Lead-Off Status Field Descriptions

Bit 7

Must be set to '0'

Bit 6

CLK_DIV : Clock divider selection

This bit sets the modultar divider ratio between fCLK and fMOD. Two external clock values are supported: 512 kHz and

2.048 MHz.

0 = fMOD = fCLK / 4 (default, use when fCLK = 512 kHz)

1 = fMOD = fCLK / 16 (use when fCLK = 2.048 MHz)

Bit 5

Must be set to '0'

Bit 4

RLD_STAT: RLD lead-off status

This bit determines the status of RLD.

0 = RLD is connected (default)

1 = RLD is not connected

Bit 3

IN2N_OFF: Channel 2 negative electrode status

This bit determines if the channel 2 negative electrode is connected or not.

0 = Connected (default)

1 = Not connected

Bit 2

IN2P_OFF: Channel 2 positive electrode status

This bit determines if the channel 2 positive electrode is connected or not.

0 = Connected (default)

1 = Not connected

Bit 1

IN1N_OFF: Channel 1 negative electrode status

This bit determines if the channel 1 negative electrode is connected or not.

0 = Connected (default)

1 = Not connected

Bit 0

IN1P_OFF: Channel 1 positive electrode status

This bit determines if the channel 1 positive electrode is connected or not.

0 = Connected (default)

1 = Not connected

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