ADIS16203SLASHPCBZ datasheet(13/28 Pages) AD

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ADIS16203

Rev. 0 | Page 13 of 28

DATA OUTPUT REGISTER ACCESS

The ADIS16203 provides access to two calibrated incline-angle

measurements (+360° and ±180° output formats), power supply

measurements, temperature measurements, and an auxiliary

12-bit ADC channel. This output data is continuously updating

internally, regardless of user read rates. The follow bit map describes

the structure of all output data registers in the ADIS16203.

MSB

LSB

D13

D12

D11

D10

The MSB holds the new data (ND) indicator. When the output

registers are updated with new data, the ND bit goes to a 1 state.

After the output data is read, it returns to a 0 state. The EA bit is

used to indicate an alarm condition, which could result from a

number of conditions, such as a power supply that is out of the

specified operating range. See the Alarms section for more details.

The output data is either 12 or 14 bits in length. For all of the 12-bit

output data, the D13 and D12 bits are assigned don’t care status.

The output data register map is located in Table 6 and provides all

of the necessary details for accessing each register’s data. Table 7

displays the output coding for the ±180° output data register,

INCL_180_OUT, and Figure 28 displays a timing diagram

example for reading this register.

Table 6. Data Output Register Information

Name

Function

Address

Resolution

(Bits)

Data

Format

Scale Factor

(per LSB)

SUPPLY_OUT

Power supply data

0x03, 0x02

Binary

1.22 mV

AUX_ADC

Auxiliary analog input data

0x09, 0x08

Binary

0.61 mV

TEMP_OUT

Sensor temperature data

0x0B, 0x0A

Binary

−0.47°C

INCL_OUT

Inclination data

0x0D, 0x0C

Binary

0.025°

INCL_180_OUT

±180° inclination data

0x0F, 0x0E

Twos complement

0.025°

Table 7. Output Coding Example, INCL_180_OUT1, 2

Acceleration Level

Binary Output

Hex Output

Decimal

+170.10°

01 1010 1001 0100

0x1A94

+6804

+93.05°

00 1110 1000 1010

0x0E8A

+3722

+0.625°

00 0000 0001 1001

0x0019

+25

0.00°

00 0000 0000 0000

0x0000

−0.625

11 1111 1110 0111

0x3FE7

−25

−93.05°

11 0001 0111 0110

0x3176

−3722

−170.10°

11 1100 0001 1000

0x256C

−6804

1 Two MSBs have been masked off and are not considered in the coding.

2 Nominal sensitivity (0.025°/LSB) and zero offset null performance are assumed.

ADDRESS = 001111

ADDRESS = 001111 OR 0x0F

DATA = 1000111010001010

NEW DATA, NO ALARM, INCL_180_OUT = +93.05°

DOUT

SCLK

DIN

W/R BIT = 0

Figure 28. SPI Sequence Reading INCL_OUT When Incline Angle = 93.05°

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