CDK2000(2008) View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CDK2000
(Rev.:2008)

Fractional-N Clock Multiplier with Internal LCO

Cirrus Logic 

8.2.3

Auto R-Modifier Enable (AutoRMod)

Controls the automatic ratio modifier function.

AutoRMod

0

1

Application:

Automatic R-Mod State

Disabled.

Enabled.

“Automatic Ratio Modifier (Auto R-Mod)” on page 16

8.2.4

Auxiliary Output Disable (AuxOutDis)

This bit controls the output driver for the AUX_OUT pin.

AuxOutDis

0

1

Application:

Output Driver State

AUX_OUT output driver enabled.

AUX_OUT output driver set to high-impedance.

“Auxiliary Output” on page 19

CS2300-CP

8.2.5

PLL Clock Output Disable (ClkOutDis)

This bit controls the output driver for the CLK_OUT pin.

ClkOutDis

0

1

Application:

Output Driver State

CLK_OUT output driver enabled.

CLK_OUT output driver set to high-impedance.

“PLL Clock Output” on page 19

8.3 Device Configuration 1 (Address 03h)

7

RModSel2

6

RModSel1

5

RModSel0

4

Reserved

3

Reserved

2

1

0

AuxOutSrc1 AuxOutSrc0 EnDevCfg1

8.3.1

R-Mod Selection (RModSel[2:0])

Selects the R-Mod value, which is used as a factor in determining the PLL’s Fractional N.

RModSel[2:0]

000

001

010

011

100

101

110

111

Application:

R-Mod Selection

Left-shift R-value by 0 (x 1).

Left-shift R-value by 1 (x 2).

Left-shift R-value by 2 (x 4).

Left-shift R-value by 3 (x 8).

Right-shift R-value by 1 (÷ 2).

Right-shift R-value by 2 (÷ 4).

Right-shift R-value by 3 (÷ 8).

Right-shift R-value by 4 (÷ 16).

“Manual Ratio Modifier (R-Mod)” on page 16

DS843PP1

25

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