CS22250 datasheet(15/32 Pages) CIRRUS

15 / 32 page

CS22250 Wireless 10BT Controller

15 of 32

DS551PP2

Rev. 3.0

www.cirrus.com

NRPD

Output

Radio power down enable.

This active low signal is used for power

management purposes for the radio circuitry.

RXCLK

Input

This is an input from base band processor. It is used to clock in received

data from base band processor.

MDRDY

Input

Receive data ready is an input signal from the baseband processor,

indicating a data packet is ready to be transferred to the MAC. The signal

returns to inactive state when there is no more receiver data or when the

link has been interrupted. This signal is sampled on the falling edge of

RXCLK and sampled at rising edge of RXCLK.

RXD

Input

Receive data is an input from the baseband processor transferring

demodulated header information and data in a serial format. The data is

frame aligned with MD_RDY. This signal is sampled on the falling edge

of RXCLK and sampled at rising edge of RXCLK.

DACAVCC

Input

Analog power for DAC. 3.3V.

DACAGND

Input

Analog ground for DAC.

RLQ

Output

Radio link quality is based on packet error rate.

Active low implies

packet received without errors. Note: lost packets arenot detected.

CS22250 Datasheet(PDF) 15 Page - Cirrus Logic