ADS1198 datasheet(80/110 Pages) TI

80 / 110 page

ADS1294, ADS1294R, ADS1296, ADS1296R, ADS1298, ADS1298R

SBAS459K – JANUARY 2010 – REVISED AUGUST 2015

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9.6.1.16 RESP: Respiration Control Register (address = 16h) (reset = 00h)

This register provides the controls for the respiration circuitry; see the Respiration section for details.

Figure 89. RESP: Respiration Control Register

RESP_ DEMOD_EN1

RESP_MOD_ EN1

RESP_PH[2:0]

RESP_CTRL[1:0]

R/W-0h

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset

Table 32. Respiration Control Register Field Descriptions

Bit

Field

Type

Reset

Description

RESP_DEMOD_EN1

R/W

Enables respiration demodulation circuitry (ADS129xR only;

for ADS129x always write 0)

This bit enables and disables the demodulation circuitry on

channel 1.

0 = RESP demodulation circuitry turned off

1 = RESP demodulation circuitry turned on

RESP_MOD_EN1

R/W

RESP_MOD_EN1: Enables respiration modulation circuitry

(ADS129xR only; for ADS129x always write 0)

This bit enables and disables the modulation circuitry on channel

0 = RESP modulation circuitry turned off

1 = RESP modulation circuitry turned on

RESERVED

R/W

Reserved

Always write 1h

4:2

RESP_PH[2:0]

R/W

Respiration phase(1)

000 = 22.5°

001 = 45°

010 = 67.5°

011 = 90°

100 = 112.5°

101 = 135°

110 = 157.5°

111 = N/A

1:0

RESP_CTRL[1:0]

R/W

Respiration control

These bits set the mode of the respiration circuitry.

00 = No respiration

01= External respiration

10 = Internal respiration with internal signals

11 = Internal respiration with user-generated signals

(1)

RESP_PH[2:0] phase control bits only for internal respiration (RESP_CTRL = 10) and external respiration (RESP_CTRL = 01) modes

when the CONFIG4.RESP_FREQ[2:0] register bits are 000b or 001b.

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