LC78845Q 查看數據表（PDF） - SANYO -> Panasonic

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产品描述 (功能)

比赛名单

LC78845Q

Sample Rate Converter for Digital Audio

SANYO -> Panasonic 

LC78845Q

Data

B0 to B3

A0 to A3

D0

D1

D2

D3

D4

D5 to D7

INITB = H

SPSEL = L

LSI selection

Address

MKSEL

FSEL1

FSEL2

MUTE

STOP

—

INITB = L

—

—

L

L

L

H

L

H

The data and the signals correspond as listed in the tables. Since the external pins (MKSEL etc.) set by the serial

input are unused, applications must assure that these pins do not become floating. If initialization is performed, set

the initial values listed in the table.

5. Muting

A soft muting function is applied to the data if the MUTE pin (pin 40) is set high when data with a 32 or 48 kHz

sampling frequency is input. The input signal values are gradually attenuated so that the data reaches –∞ 1024/fs

(seconds) later. When the soft muting function is turned off, the amplitude becomes the same as that of the input

1024/fs (seconds) later.

For input data with a 44.1 sampling frequency, the data is forcibly set to 0 on the next rising edge of the LRCK

signal after the MUTE signal goes from low to high. Similarly, data is output on the next rising edge of the LRCK

signal after the MUTE signal goes from high to low.

6. Initialization

When power is first applied, the LSI must be initialized when the pin settings are changed. Initialization is performed

by holding INITB (pin 2) low for at least 1 µs in the state where the MCK1 signal is input after the power supply

voltage has stabilized.

No. 5236-9/10

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