ADIS16265 Просмотр технического описания (PDF) - Analog Devices

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ADIS16265

Programmable Digital Gyroscope Sensor

Analog Devices 

Data Sheet

Table 28. ALM_CTRL Bit Descriptions

Bits

Description (Default = 0x0000)

[15]

Rate-of-change enable for Alarm 2

(1 = rate of change, 0 = static level).

[14:12] Alarm 2 source selection.

000 = disable.

001 = power supply output.

010 = gyroscope output.

011 = not used.

100 = not used.

101 = auxiliary ADC input.

110 = temperature output.

111 = not used.

[11]

Rate-of-change enable for Alarm 1

(1 = rate of change, 0 = static level).

[10:8] Alarm 1 source selection (same as for Alarm 2).

[7:5] Not used.

[4]

Comparison data filter setting

(1 = filtered data, 0 = unfiltered data).

[3]

Not used.

[2]

Alarm output enable

(1 = enabled, 0 = disabled).

[1]

Alarm output polarity

(1 = active high, 0 = active low).

[0]

Alarm output line select

(1 = DIO2, 0 = DIO1).

Table 29. Alarm Configuration Example 1

DIN

Description

0xA922,

0xA817

ALM_CTRL = 0x2217.

Alarm 1 input = GYRO_OUT.

Alarm 2 input = GYRO_OUT.

Static level comparison, filtered data.

DIO2 output indicator, positive polarity.

0xA181,

0xA000

ALM_MAG1 = 0x8100.

Alarm 1 is true if GYRO_OUT > +18.755°/sec.

0xA33F,

0xA200

ALM_MAG2 = 0x3F00.

Alarm 2 is true if GYRO_OUT < −18.755°/sec.

ADIS16260/ADIS16265

Table 30. Alarm Configuration Example 2

DIN

Description

0xA9AA,

0xA804

ALM_CTRL = 0xAA04.

Alarm 1 input = GYRO_OUT.

Alarm 2 input = GYRO_OUT.

Rate-of-change comparison, unfiltered data.

DIO1 output indicator, negative polarity.

0xB601

SMPL_PRD = 0x0001.

Sample rate = 256 SPS.

0xA40A

ALM_SMPL1[7:0] = 0x000A.

Alarm 1 rate-of-change period = 3.906 ms.

0xA60A

ALM_SMPL2[7:0] = 0x000A.

Alarm 2 rate-of-change period = 3.906 ms.

0xA181,

0xA000

ALM_MAG1 = 0x8100.

Alarm 1 is true if GYRO_OUT changes more than

18.755°/sec over a period of 3.906 ms.

0xA30F,

0xA200

ALM_MAG2 = 0x0F00.

Alarm 2 is true if GYRO_OUT changes less than

18.755°/sec over a period of 3.906 ms.

PRODUCT IDENTIFICATION

Table 31 provides a summary of the registers that identify

the product: PROD_ID, which identifies the product type;

LOT_ID1 and LOT_ID2, the 32-bit lot identification code;

and SERIAL_NUM, which displays the 16-bit serial number.

All four registers are two bytes in length.

Table 31. Identification Registers

Register Name Address Description

LOT_ID1

0x52

Lot Identification Code 1

LOT_ID2

0x54

Lot Identification Code 2

PROD_ID

0x56

Product identification = 0x3F89 or

0x3F84

(0x3F89 = 16,265 decimal; 0x3F84 =

16,260 decimal)

SERIAL_NUM 0x58

Serial number

Rev. D | Page 17 of 20

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