REV. 0

AD73360L

–11–

Table IV. Control Word Description

15

14

13

12

11

10

9876543210

C/

D

R/

W

DEVICE ADDRESSS

REGISTER ADDRESS

REGISTER DATA

Control

Frame

Description

Bit 15

Control/

Data

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.

Bit 14

Read/

Write

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.

Bits 13–11

Device Address

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.

Bits 10–8

Register Address

This 3-bit field is used to select one of the eight control registers on the AD73360L.

Bits 7–0

Register Data

This 8-bit field holds the data that is to be written to the selected register provided the device

address field is zero.

Table III. Control Register Map

Address (Binary)

Name

Description

Type

Width

Reset Setting (Hex)

000

CRA

Control Register A

R/

W

8

0x00

001

CRB

Control Register B

R/

W

8

0x00

010

CRC

Control Register C

R/

W

8

0x00

011

CRD

Control Register D

R/

W

8

0x00

100

CRE

Control Register E

R/

W

8

0x00

101

CRF

Control Register F

R/

W

8

0x00

110

CRG

Control Register G

R/

W

8

0x00

111

CRH

Control Register H

R/

W

8

0x00

Table V. Control Register A Description

7

654321

0

RESET

DC2

DC1

DC0

SLB

RES

MM

DATA/

PGM

Bit Name

Description

0

DATA/

PGM

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

1

MM

Mixed Mode (0 = OFF; 1 = Enabled)

2

Reserved

Must Be Programmed to Zero (0)

3

SLB

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

4

DC0

Device Count (Bit 0)

5

DC1

Device Count (Bit 1)

6

DC2

Device Count (Bit 2)

7

RESET

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

CONTROL REGISTER A