ADS1291
ADS1292
ADS1292R
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SBAS502A –DECEMBER 2011–REVISED MARCH 2012
RESP1: Respiration Control Register 1
Address = 09h
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
1
BIT 0
RESP_
DEMOD_EN1
RESP_MOD_
EN
RESP_PH3
RESP_PH2
RESP_PH1
RESP_PH0
RESP_CTRL
This register controls the respiration functionality. This register applies to the ADS1292R version only. For the
ADS1291 and ADS1292 devices, 02h must be written to the RESP1 register.
Bit 7
RESP_DEMOD_EN1: Enables respiration demodulation circuitry
This bit enables and disables the demodulation circuitry on channel 1.
0 = RESP demodulation circuitry turned off (default)
1 = RESP demodulation circuitry turned on
Bit 6
RESP_MOD_EN: Enables respiration modulation circuitry
This bit enables and disables the modulation circuitry on channel 1.
0 = RESP modulation circuitry turned off (default)
1 = RESP modulation circuitry turned on
Bits[5:2]
RESP_PH[3:0]: Respiration phase(1)
These bits control the phase of the respiration demodulation control signal.
RESP_PH[3:0]
0000
RESP_CLK = 32kHz
0° (default)
11.25°
RESP_CLK = 64 kHz
0° (default)
22.5°
0001
0010
22.5°
45°
0011
33.75°
67.5°
0100
45°
90°
0101
56.25°
112.5°
0110
67.5°
135°
0111
78.75°
157.5°
1000
90°
Not available
Not available
Not available
Not available
Not available
Not available
Not available
Not available
1001
101.25°
112.5°
1010
1011
123.75°
135°
1100
1101
146.25°
157.5°
1110
1111
168.75°
(1) The RESP_PH3 bit is ignored when RESP_CLK = 64 kHz.
Bit 1
Bit 0
Must be set to '1'
RESP_CTRL: Respiration control
This bit sets the mode of the respiration circuitry.
0 = Internal respiration with internal clock
1 = Internal respiration with external clock
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