DSP56600FMSLASHAD datasheet(55/76 Pages) NXP

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DSP56652

Audio Serial Codec and Baseband Serial Codec Timing

Preliminary

MOTOROLA

DSP56652 Technical Data Sheet

2-13

AUDIO SERIAL CODEC AND BASEBAND SERIAL CODEC TIMING

The audio serial codec port (also called the serial audio port or SAP) and the

baseband serial codec port (also called the baseband port or BBP) have the same

timing specifications. The timing table uses the following acronyms to describe the

signal parameters:

tSSICC = BBP/SAP clock cycle time

TXC (SCKA/SCKB Pin) = Transmit clock

RXC (SC0A/SC0B or SCKA/SCKB Pin) = Receive clock

FST (SC2A/SC2B Pin) = Transmit frame sync

FSR (SC1A/SC1B or SC2A/SC2B Pin) = Receive frame sync

i ck = Internal clock

x ck = External clock

i ck a = Internal clock, asynchronous mode (Asynchronous

implies that TXC and RXC are two different clocks)

i ck s = Internal clock, synchronous mode (Synchronous implies

that TXC and RXC are the same clock)

bl = Bit length

wl = Word length

wr = Word length relative

Figure 2-8

QSPI Timings for CPHA = 1

SCK (CSPOL = 0)

MISO

SCK (CSPOL = 1)

PCS [4:0]

MOSI

MSB OUT

DATA

LSB OUT

MSB IN

DATA

LSB IN

MSB OUT

MSB IN

303

305

304

301

302

306

302

308

311

309

307

310

AA1686

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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