CS2100-OTP(2008) Ver la hoja de datos (PDF) - Cirrus Logic

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CS2100-OTP
(Rev.:2008)

Fractional-N Clock Multiplier

Cirrus Logic 

6.1.2

CS2100-OTP

Auxiliary Output Source Selection (AuxOutSrc[1:0])

Selects the source of the AUX_OUT signal.

AuxOutSrc[1:0]

00

01

10

11

Application:

Auxiliary Output Source

RefClk.

CLK_IN.

CLK_OUT.

PLL Lock Status Indicator.

“Auxiliary Output” on page 18

Note: When set to 11, the AuxLockCfg global parameter sets the polarity and driver type (“AUX PLL

Lock Output Configuration (AuxLockCfg)” on page 23).

6.1.3

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 15

6.2 Ratio 0 - 3

The four 32-bit User Defined Ratios are stored in the CS2100’s one time programmable memory. See “Out-

put to Input Frequency Ratio Configuration” on page 14 and “Calculating the User Defined Ratio” on

page 25 for more details.

6.3 Global Configuration Parameters

6.3.1

Clock Skip Enable (ClkSkipEn)

This parameter enables clock skipping mode for the PLL and allows the PLL to maintain lock even when

the CLK_IN has missing pulses.

ClkSkipEn

0

1

Application:

PLL Clock Skipping Mode

Disabled.

Enabled.

“CLK_IN Skipping Mode” on page 11

Note: fCLK_IN must be < 80 kHz to use this feature.

22

DS841PP1

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