ADIS16210PCBZ datasheet(14/20 Pages) AD

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ADIS16210

Rev. A | Page 14 of 20

SYSTEM TOOLS

The ADIS16210 provides control registers for the following

system level functions: global commands (including self test),

input/output functions, device identification, status/error flags,

and flash memory management.

GLOBAL COMMANDS

The GLOB_CMD register (Table 28) provides an array of single

write commands. Set the assigned bit to 1 to activate each func-

tion. Proper execution of each command depends on the power

supply being within normal limits and no SPI communication,

during the process times listed in Table 28.

Table 28. GLOB_CMD (Base Address = 0x3E), Write Only

Bits

Description

Process Time1

[15:8]

Not used

N/A2

[7]

Software reset

33.7 ms

[6]

User register save to flash memory

28.0 ms

[5]

Flash memory test

31.3 ms

[4]

Clear DIAG_STAT register

93 μs

[3]

Restore factory default configuration

68.6 ms

[2]

Self test

53.7 ms

[1]

Power-down

N/A2

[0]

Not used

N/A2

1 This indicates the typical duration of time between the command write and

the device returning to normal operation.

2 N/A means not applicable.

Software Reset

Set GLOB_CMD[7] = 1 (DIN = 0xBE80) to execute an internal

reset, which flushes all data and restores the register values to

the values that are stored in nonvolatile flash memory.

User Register Save to Flash Memory

Set GLOB_CMD[6] = 1 (DIN = 0xBE40) to back up all of the

current register settings into nonvolatile flash memory.

Flash Memory Test

Set GLOB_CMD[5] = 1 (DIN = 0xBE20) to execute the internal

flash memory test routine, which computes a check sum verifi-

cation of all flash memory locations that are not configurable

through user commands.

Self Test

Set GLOB_CMD[2] = 1 (DIN = 0xBE04) to execute an internal

test routine that exercises the sensors and signal processing circuit,

then writes the pass/fail result to Bit 5 of the DIAG_STAT register.

Power-Down

Set GLOB_CMD[1] = 1 (DIN = 0xBE02) to put the device into

sleep mode. Use the SLP_CNT register to establish the duration

of the sleep period. For example, set SLP_CNT[7:0] = 0x64

(DIN = 0xBA64) to set the sleep period to 50 seconds. Set

SLP_CNT[7:0] = 0x00 (DIN = 0xBA00) to establish the sleep

period as indefinite. Indefinite sleep mode requires one of the

three actions to wake up: negative assertion of the CS line (22.3 ms

wake-up time), a negative assertion of the RST line (33.8 ms

recovery time), or a power cycle (156 ms start-up time).

Table 29. SLP_CNT (Base Address = 0x3A), Read/Write

Bits

Description (Default = 0x0000)

[15:8]

Not used

[7:0]

Binary, sleep time, 0.5 seconds/LSB

0x00 = indefinite sleep mode

INPUT/OUTPUT FUNCTIONS

The DIO_CTRL register (Table 30) provides configuration

control options for the two digital I/O lines. Bits[5:4] and Bit 1

assign the function and active polarity for DIO2. Bits[3:2] and

Bit 0 assigned the function and polarity for DIO1.

Table 30. DIO_CTRL (Base Address = 0x36), Read/Write

Bits

Value

Description (Default = 0x0007)

[15:6]

Not used

[5:4]

DIO2 function selection

General-purpose

Data ready

Alarm indicator

Busy signal

[3:2]

DIO1 function selection

General-purpose

Data ready

Alarm indicator

Busy signal

[1]

DIO2 polarity

Active high

Active low

[0]

DIO1 polarity

active high

active low

Data Ready Indicator

The data ready signal pulses to its inactive state when loading

fresh data into the output registers, then back to its active state

when the register update process completes, as shown in Figure 21,

which shows the factory default operation. Set DIO_CTRL[7:0] =

0x13 (DIN = 0xB613) to change the data ready assignment to

DIO2 with a positive polarity.

ACTIVE

INACTIVE

DIO1

Figure 21. Data Ready Operation, DIO_CTRL[7:0] = 0x05

Alarm Indicator

Set DIO_CTRL[7:0] = 0x27 (DIN = 0xB627) to configure DIO2 as

an alarm indicator with an active high polarity. The alarm indicator

transitions to its active state when the acceleration or system data

exceeds the threshold settings in the ALM_MAG_x registers. Set

GLOB_CMD[4] = 1 (DIN = 0xBF10) to clear the DIAG_STAT

error flags and restore the alarm indicator to its inactive state.

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