ADIS16354SLASHPCBZ datasheet(14/28 Pages) AD

14 / 28 page

ADIS16354

Rev. 0 | Page 14 of 28

DATA OUTPUT REGISTER ACCESS

The ADIS16354 provides access to a full 6DOF set of calibrated

motion measurements, power supply measurements, tempera-

ture measurements, and an auxiliary 12-bit ADC channel. This

output data is continuously updated internally, regardless of user

read rates. Table 6 describes the structure of all ADIS16354

output data registers.

Table 6. Output Register Bit Map

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 indicates a system error or an alarm condition that

can result from various conditions, such as a power supply out-

of-range condition. See the Status and Diagnostics section for

more details. The output data is either 12 bits or 14 bits in

length. For the 12-bit output data, Bit D13 and Bit D12 are

assigned don’t-care status.

The output data register map is located in Table 7 and provides

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

Table 8 displays the output coding for the gyroscope output

registers and Table 9 provides the output coding for the accelera-

tion registers. Figure 29 provides an example of an SPI read

cycle for the XGYRO_OUT register.

Table 7. Data Output Register Information

Name

Function

Addresses

Data

Length

Data Format

Scale Factor

(per LSB)

SUPPLY_OUT

Power supply measurement

0x03, 0x02

12 bits

Binary

1.8315 mV

XGYRO_OUT

X-axis gyroscope output measurement

0x05, 0x04

14 bits

Twos complement

0.07326 °/s1

YGYRO_OUT

Y-axis gyroscope output measurement

0x07, 0x06

14 bits

Twos complement

0.07326 °/s1

ZGYRO_OUT

Z-axis gyroscope output measurement

0x09, 0x08

14 bits

Twos complement

0.07326 °/s1

XACCL_OUT

X-axis acceleration output measurement

0x0B, 0x0A

14 bits

Twos complement

0.4672 mg

YACCL_OUT

Y-axis acceleration output measurement

0x0D, 0x0C

14 bits

Twos complement

0.4672 mg

ZACCL_OUT

Z-axis acceleration output measurement

0x0F, 0x0E

14 bits

Twos complement

0.4672 mg

XTEMP_OUT2

X-axis gyroscope sensor temperature measurement

0x11, 0x10

12 bits

Twos complement

0.1453°C

YTEMP_OUT2

Y-axis gyroscope sensor temperature measurement

0x13, 0x12

12 bits

Twos complement

0.1453°C

ZTEMP_OUT2

Z-axis gyroscope sensor temperature measurement

0x15, 0x14

12 bits

Twos complement

0.1453°C

AUX_ADC

Auxiliary analog input data

0x17, 0x16

12 bits

Binary

0.6105 mV

1 Assumes that the scaling is set to 300°/s.

2 Typical condition, 25°C = 0 LSB.

Table 8. Output Coding Example, XGYRO_OUT, YGYRO_OUT, and ZGYRO_OUT1, 2

Rate of Rotation

±300°/s Range

±150°/s Range

±75°/s Range

Binary Output

Hexadecimal Output

Decimal

80°/s

40°/s

20°/s

00 0100 0100 0100

0x0444

1092

40°/s

20°/s

10°/s

00 0010 0010 0010

0x0222

546

0.07326°/s

0.03663°/s

0.018315°/s

00 0000 0000 0001

0x0001

0°/s

00 0000 0000 0000

0x0000

−0.07326°/s

−0.03663°/s

−0.018315°/s

11 1111 1111 1111

0x3FFF

−1

−40°/s

−20°/s

−10°/s

11 1101 1101 1110

0x3DDE

−546

−80°/s

−40°/s

−20°/s

11 1011 1011 1100

0x3BBC

−1092

1 The binary output includes the data bits for the output registers, which, in this case, are D0 to D13, per Table 6. Bits assigned EA and ND are not included.

2 Zero offset null performance is assumed.

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