AD73460 Просмотр технического описания (PDF) - Analog Devices

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AD73460

Six-Input Channel Analog Front End

Analog Devices 

Address (Binary)

000

001

010

011

100

101

110

111

Name

CRA

CRB

CRC

CRD

CRE

CRF

CRG

CRH

Table VI. Control Register Map

Description

Control Register A

Control Register B

Control Register C

Control Register D

Control Register E

Control Register F

Control Register G

Control Register H

Type

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Width

8

8

8

8

8

8

8

8

AD73460

Reset Setting (Hex)

0x00

0x00

0x00

0x00

0x00

0x00

0x00

0x00

Table VII. Control Word Description

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

C/D R/W DEVICE ADDRESS REGISTER ADDRESS

REGISTER DATA

Control

Bit 15

Bit 14

Bits 13–11

Bits 10–8

Bits 7–0

Frame

CONTROL/DATA

READ/WRITE

DEVICE ADDRESS

REGISTER ADDRESS

REGISTER DATA

Description

When set high, it signifies a control word in Program or Mixed Program/Data Modes. When

set low, it signifies an invalid control word in Program Mode.

When set low, it tells the device that the data field is to be written to the register selected by

the register field setting provided the address field is zero. When set high, it tells the device

that the selected register is to be written to the data field in the serial register and that the new

control word is to be output from the device via the serial output.

This 3-bit field holds the address information. Only when this field is zero is a device selected.

If the address is not zero, it is decremented and the control word is passed out of the device

via the serial output.

This 3-bit field is used to select one of the eight control registers on the AD73460.

This 8-bit field holds the data that is to be written to or read from the selected register pro-

vided the address field is zero.

CONTROL REGISTER A

Table VIII. Control Register A Description

7

6

RESET DC2

5

DC1

4

DC0

3

SLB

2

RES

1

0

MM DATA/PGM

Bit Name

0

DATA/PGM

1

MM

2

Reserved

3

SLB

4

DC0

5

DC1

6

DC2

7

RESET

Description

Operating Mode (0 = Program; 1 = Data Mode)

Mixed Mode (0 = OFF; 1 = Enabled)

Must Be Programmed to Zero (0)

SPORT Loop-Back Mode (0 = OFF; 1 = Enabled)

Device Count (Bit 0)

Device Count (Bit 1)

Device Count (Bit 2)

Software Reset (0 = OFF; 1 = Initiates Reset)

REV. A

–15–

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