ADIS16265ACCZ(RevPrA) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADIS16265ACCZ
(Rev.:RevPrA)

Programmable Low Power Gyroscope

Analog Devices 

ADIS16260/ADIS16265

Preliminary Technical Data

PROGRAMMING AND CONTROL

CONTROL REGISTER OVERVIEW

The ADIS16260/ADIS16265 offer many programmable features

controlled by writing commands to the appropriate control

registers using the SPI. Table 8 provides a summary of these

control registers, which controls the operation of the following

parameters:

• Calibration

• Global commands

• Operational control

• Sample rate

• Power management

• Digital filtering

• Dynamic range

• DAC output

• Digital I/O

• Operational status and diagnostics

• Self-test

• Status conditions

• Alarms

CONTROL REGISTER STRUCTURE

The ADIS16260/ADIS16265 uses a temporary, RAM-based

memory structure to facilitate the control registers displayed in

Table 8. The start-up configuration is stored in a flash memory

structure that automatically loads into the control registers

during the start-up sequence. Each nonvolatile register has a

corresponding flash memory location, for storing the latest

configuration contents. Since flash memory has endurance

limitations, the contents of each nonvolatile register must be

manually stored to flash (note that the contents of the control

register contents are only nonvolatile when they are stored to

flash). The manual flash update command, made available

in the COMMAND register, provides this function. The

ENDURANCE register provides a counter that allows for

memory reliability management against the 20,000-write cycle

specification.

Table 8. Control Register Memory Map

Register Name Type Volatility

Address

GYRO_OFF

R/W Nonvolatile 0x15, 0x14

GYRO_SCALE R/W Nonvolatile 0x17, 0x16

0x18 to 0x1F

ALM_MAG1

R/W Nonvolatile 0x21, 0x20

ALM_MAG2

R/W Nonvolatile 0x23, 0x22

ALM_SMPL1 R/W Nonvolatile 0x25, 0x24

ALM_SMPL2 R/W Nonvolatile 0x27, 0x26

ALM_CTRL

R/W Nonvolatile 0x29, 0x28

AUX_DAC

GPIO_CTRL

MSC_CTRL

SMPL_PRD

SENS/AVG

SLP_CNT

STATUS

COMMAND

0x2A to 0x2F

R/W Volatile

0x31, 0x30

R/W Volatile

0x33, 0x32

R/W Nonvolatile1 0x35, 0x34

R/W Nonvolatile 0x37, 0x36

R/W Nonvolatile 0x39, 0x38

R/W Volatile

0x3B, 0x3A

R

Volatile

W N/A

0x3D, 0x3C

0x3F, 0x3E

Bytes

2

2

8

2

2

2

2

2

Function

Gyroscope bias offset factor

Gyroscope scale factor

Reserved

Alarm 1 amplitude threshold and polarity

Alarm 2 amplitude threshold and polarity

Alarm 1 sample period

Alarm 2 sample period

Alarm control register

6

Reserved

2

Auxiliary DAC data

2

Auxiliary digital I/O control register

2

Miscellaneous control register

2

ADC sample period control

2

Defines the dynamic range (sensitivity setting)

and the number of taps for the digital filter

2

Counter used to determine length of power-

down mode

2

System status register

2

System command register

Reference Table

Table 9, Table 10

Table 11, Table 12

Table 31, Table 32

Table 35, Table 36

Table 33, Table 34

Table 37, Table 38

Table 39,

Table 40

Table 21, Table 22

Table 23, Table 24

Table 26, Table 27

Table 15, Table 16

Table 19, Table 20

Table 17, Table 18

Table 28, Table 29

Table 13, Table 14

1 The contents of the upper byte are nonvolatile; the contents of the lower byte are volatile.

Rev. PrA | Page 12 of 19

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