AD5933 datasheet(13/20 Pages) AD

13 / 20 page

Preliminary Technical Data

AD5933

Rev. PrA | Page 13 of 20

CONTROL REGISTER

The AD5933 contains a 16 bit control register (address 80h and

81h) that set the AD5933 control modes. The five MSB’s of the

control register are decoded to provide control functions for

frequency sweep, power down and various other control

functions, defined in Table below. The other command

functions of the control register are explained on the following

pages.

Note: For error checking on the control register it is advised to

write one byte at a time with PEC enabled. This allows full error

checking to be completed before the control register is updated

and therefore ensures the control is not updated with incorrect

data. The Control register will power-up in the following state

xA000h (i.e. in Power-down)

Table 6. Control Register Map

Bit

D15

D14

D13

D12

D11

FREQUENCY SWEEP

D14

No Operation/ Exit Fuse Blow Mode

D13

Initialize Sensor with Start Frequency

D12

Start Frequency Sweep

D11

Increment Frequency

Repeat Frequency

Reserved.

Measure Temperature

Power Down

Standby Mode

D10

External Calibration Mode = “1”

Output Voltage

No Divide.

(Normal Mode = 2.0V)

Divide by 10

(200mv)

Divide by 5

(400mv)

Divide by 2

(1.0v)

Post Gain

“0” = Multiply X 5;

“1” = Multiply X 1.

Error Checking Enable = “1”; Disable=”0”

Reserved. Set to “0”

RESET

System Clock

Internal Oscillator

Reserved.

External Oscillator

PLL

RESERVED

AD5933 датащи(PDF) 13 Page - Analog Devices

AD5933 датащи(HTML) 13 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

датащи скачать

ссылки URL