CS22220 Wireless PCMCIA Controller

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DS557PP2

Rev. 3.0

www.cirrus.com

DACAVCC

Input

Analog power for DAC. This is 3.3V.

DACAGND

Input

Analog ground for DAC.

PLL and Clock Interface

There are three clock pins and five PLL power pins. There are a total of 8 signals in this interface.

XTAL_CLKIN

Input

44 MHz reference clock input/crystal clock input.

XTALOUT

Input

Reference crystal clock output.

XTRACLK

Input

Second clock input to the clock module. This input clock is used

depending on the clock configuration, which is determined by three

strapping pin values.

PLLAGND

Input

Analog PLL ground.

PLLAVCC

Input

Analog PLL power. This is 3.3V.

PLLDGND

Input

Digital PLL ground.

PLLDVCC

Input

Digital PLL power. This is 1.8V.

PLLPLUS

Input

Analog PLL ground.