www.ti.com

Default Device Setting

CDCE706

SCAS815A – OCTOBER 2005 – REVISED OCTOBER 2005

Table 2. Register Configuration Command Bitmap

Adr

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Byte 0

Revision Code

Vendor Identification

Byte 1

PLL1 Reference Divider M 9-Bit [7:0]

Byte 2

PLL1 Feedback Divider N 12-Bit [7:0]

Byte 3

PLL1 Mux

PLL2 Mux

PLL3 Mux

PLL1 Feedback Divider N 12-Bit [11:8]

PLL1 Ref

Dev M [8]

Byte 4

PLL2 Reference Divider M 9-Bit [7:0]

Byte 5

PLL2 Feedback Divider N 12-Bit [7:0]

Byte 6

PLL1 fvco

PLL2 fvco

PLL3 fvco

PLL2 Feedback Divider N 12-Bit [11:8]

PLL2 Ref

Selection

Selection

Selection

Dev M [8]

Byte 7

PLL3 Reference Divider 9-Bit M [7:0]

Byte 8

PLL3 Feedback Divider N [12-Bit 7:0]

Byte 9

PLL Selection for P0 (Switch A)

PLL3 Feedback Divider N 12-Bit [11:8]

PLL3 Ref

Dev M [8]

Byte 10

PLL Selection for P1 (Switch A)

Inp. Clock

Configuration Inputs S1

Configuration Inputs S0

Selection

Byte 11

Input Signal Source

PLL Selection for P3 (Switch A)

PLL Selection for P2 (Switch A)

Byte 12

Reserved

Power Down

PLL Selection for P5 (Switch A)

PLL Selection for P4 (Switch A)

Byte 13

Reserved

7-Bit Divider P0 [6:0]

Byte 14

Reserved

7-Bit Divider P1 [6:0]

Byte 15

Reserved

7-Bit Divider P2 [6:0]

Byte 16

Reserved

7-Bit Divider P3 [6:0]

Byte 17

Reserved

7-Bit Divider P4 [6:0]

Byte 18

Reserved

7-Bit Divider P5 [6:0]

Byte 19

Reserved

Y0 Inv. or

Y0 Slew-Rate Control

Y0 Enable or

Y0 Divider Selection (Switch B)

Non-Inv

Low

Byte 20

Reserved

Y1 Inv. or

Y1 Slew-Rate Control

Y1 Enable or

Y1 Divider Selection (Switch B)

Non-Inv

Low

Byte 21

Reserved

Y2 Inv. or

Y2 Slew-Rate Control

Y2 Enable or

Y2 Divider Selection (Switch B)

Non-Inv

Low

Byte 22

Reserved

Y3 Inv. or

Y3 Slew-Rate Control

Y3 Enable or

Y3 Divider Selection (Switch B)

Non-Inv

Low

Byte 23

Reserved

Y4 Inv. or

Y4 Slew-Rate Control

Y4 Enable or

Y4 Divider Selection (Switch B)

Non-Inv

Low

Byte 24

EEPIP [read

Y5 Inv or

Y5 Slew-Rate Control

Y5 Enable or

Y5 Divider Selection (Switch B)

only]

Non-Inv

Low

Byte 25

EELOCK

Spread Spectrum (SSC) Modulation

Frequency Selection for SSC

Selection

Byte 26

EEWRITE

7-Bit Byte Count

The internal EEPROM of CDCE706 is pre-programmed with a factory default configuration as shown below. This

puts the device in an operating mode without the need to program it first. The default setting appears after power

is switched on or after a power-down/up sequence until it is re-programmed by the user to a different application

configuration. A new register setting is programmed via the serial SMBUS Interface.

A different default setting can be programmed upon customer request. Contact a Texas Instruments sales or

marketing representative for more information.

12