LC75055PE(2014) Просмотр технического описания (PDF) - ON Semiconductor

Номер в каталоге

Компоненты Описание

производитель

LC75055PE
(Rev.:2014)

Car Audio DSP

ON Semiconductor 

(7) Input timing chart

BRCK

LRCK

DATA

LC75055PE

tBCH

tBCY

tBCL

tLRH tLRSU

tDH

tDS

LRCK Cycle Time

BCLK Cycle Time

Parameter

BCLK pulse width “H”

BCLK pulse width “L”

LRCK setup time to BCLK rising edge

LRCK hold time to BCLK rising edge

DATA setup time to BCLK rising edge

DATA hold time to BCLK rising edge

symbol

-

tBCY

tBCH

tBCL

tLRSU

tLRH

tDS

tDH

Conditions

BCLK : 64FS

BCLK : 32FS

Min

Typ

8

512

256

60

60

30

30

30

30

Max

96

6144

3072

Unit

kHz

kHz

nsec

nsec

nsec

nsec

nsec

nsec

(8) Sampling rate Converter (SRC)

The sampling rate converter converts the sampling frequency into internal 44.1kHz or 48kHz for IIS digital input. It is

decided which frequency it is converted into by crystal to use.

In the case of 44.1kHz

Crystal oscillator is 11.2896MHz (44.1kHz × 256)

In the case of 48kHz:

Crystal oscillator is 12.288MHz (48kHz × 256)

Setting of the control information is necessary. About the setting method, it is shown in software specification.

1) Input sampling frequency

2) Output sampling frequency

3) number of the channels:

8kHz to 96kHz

44.1kHz or 48kHz

4 stereo channel (8 channel)

It takes 2782fs (based on fs of either slow input or output) period after starting input and output of the digital audio

before SRC output is stable (THD+N is stable). Because noise may occur during this period, please do mute

processing.

No.A2168-17/26

Share Link: