ADAS1000-4BSTZ datasheet(60/80 Pages) AD

60 / 80 page

ADAS1000-3/ADAS1000-4

Data Sheet

Table 30. Respiration Control Register (RESPCTL) Address 0x03, Reset Value = 0x0000001

REE

Default

Bit

Name

Function

[23:17]

Reserved

Reserved, set to 0.

R/W

RESPALTFREQ

Setting this bit to 1 makes the respiration waveform on the GPIO3 pin periodic every cycle. Use in

conjunction with RESFREQ to select drive frequency.

0 (default) = periodic every N cycles (default).

1 = periodic every cycle.

R/W

RESPEXTSYNC

Set this bit to 1 to drive the MSB of the respiration DAC out onto the GPIO3 pin. This signal can be

used to synchronize an external generator to the respiration carrier. It is a constant period only

when RESPALTFREQ = 1.

0 (default) = normal GPIO3 function.

1 = MSB of RESPDAC driven onto the GPIO3 pin.

R/W

RESPEXTAMP

For use with an external instrumentation amplifier with respiration circuit. Bypasses the on-chip

amplifier stage and input directly to the ADC. See

Figure 69.

0 (default) = disabled.

1 = enabled.

R/W

RESPOUT

Selects external respiration drive output. RESPDAC_RA is automatically selected when RESPCAP = 1

0 (default) = RESPDAC_LL and RESPDAC_RA.

1 = RESPDAC_LA and RESPDAC_RA.

R/W

RESPCAP

Selects source of respiration capacitors.

0 (default) = use internal capacitors.

1 = use external capacitors.

R/W

0000

[11:8]

RESPGAIN [3:0]

Respiration in amp gain (saturates at 10).

0000 (default) = ×1 gain.

0001 = ×2 gain.

0010 = ×3 gain.

…

1000 = ×9 gain.

1001 = ×10 gain.

11xx = ×10 gain.

R/W

RESPEXTSEL

Selects between EXT_RESP _LA or EXT_RESP_LL paths. Applies only if the external respiration is

selected in RESPSEL. EXT_RESP_RA is automatically enabled.

0 (default) = EXT_RESP_LL.

1 = EXT_RESP_LA.

R/W

[6:5]

RESPSEL [1:0]

Set leads for respiration measurement.

00 (default) = Lead I.

01 = Lead II.

10 = Lead III.

11 = external respiration path.

R/W

[4:3]

RESPAMP

Set the test tone amplitude for respiration drive signal.

00 (default) = amplitude/8.

01 = amplitude/4.

10 = amplitude/2.

11 = amplitude.

R/W

[2:1]

RESPFREQ

Set frequency for respiration.

RESPFREQ

RESPALTFREQ = 0

RESPALTFREQ = 1 (periodic)

00 (default)

56 kHz

64 kHz

54 kHz

56.9 kHz

52 kHz

51.2 kHz

50 kHz

46.5 kHz

R/W

RESPEN

Enable respiration.

0 (default) = respiration disabled.

1 = respiration enabled.

ADAS1000-4 model only, ADAS1000-3 model does not contain this feature.

Rev. B | Page 60 of 80

ADAS1000-4BSTZ 数据表(PDF) 60 Page - Analog Devices

ADAS1000-4BSTZ 数据表(HTML) 60 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

数据表下载