ADIS16080

Rev. 0 | Page 12 of 16

CONTROL REGISTER

The control register on the ADIS16080 is a 12-bit, write-only

register. Data is loaded from the DIN pin on the falling edge of

SCLK. The data is transferred on the DIN line at the same time

that the conversion result is read from the part. The data

transferred on the DIN line dictates the configuration for the

next conversion.

This requires 16 serial clocks for every data transfer. Only the

information provided on the first 12 falling clock edges (after

CS falling edge) is loaded to the control register.

MSB denotes the first bit in the data stream. The DIN Bit

Stream bit map shows the analog input channel selection

options.

Table 5. Channel Selection

Analog Input Channel

ADD1

ADD0

Gyroscope

0

0

Temperature Sensor

0

1

AIN1 Input

1

0

AIN2 Input

1

1

DIN Bit Stream

MSB (11)

LSB (0)

WRITE

LOW

DONTC

DONTC

ADD1

ADD0

HIGH

HIGH

DONTC

DONTC

LOW

CODING

Table 6. Analog Input Channel Selection Options

Bit

Mnemonic

Comment

s

11

WRITE

The value written to this bit of the control register determines whether the following 11 bits are loaded to the

control register or not. If this bit is a 1, the following 11 bits are written to the control register. If it is a 0, the

remaining 11 bits are not loaded to the control register, and it remains unchanged.

10

LOW

This bit should be low.

9, 8

DONTC

Don’t care.

7, 6

ADD1, ADD0

These two address bits are loaded at the end of the present conversion sequence and select which analog input

channel is to be converted in the next serial transfer. The selected input channel is decoded as shown in Table 5.

The address bits corresponding to the conversion result are output on DOUT prior to the 12 bits of data. The next

channel to be converted is selected by the mux on the 14th SCLK falling edge.

5, 4

HIGH

These bits should be high.

3, 2

DONTC

Don’t care.

1

LOW

This bit should be low.

0

CODING

This bit selects the type of output coding used for the conversion result. If this bit is set to 0, the output coding for

the part is twos complement. If this bit is set to 1, the output coding from the part is straight binary (for the next

conversion).