SM5844

更新时间： 2024-09-30 22:50:15

品牌	Logo	应用领域
NPC		转换器
页数	文件大小	规格书
26页	279K
描述
Asynchronous Sample Rate Converter

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中文翻译

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数据手册

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SM5844 数据手册

SM5844AF

NIPPON PRECISION CIRCUITS LTD.

Asynchronous Sample Rate Converter

OVERVIEW

APPLICATIONS

The SM5844AF is

digital audio signal,

■ Digital audio equipment, sample rate conversion

(audiovisual ampliﬁers, CD-R, DAT, MD and 8

mm VTRs)

■ Commercial recording/editing equipment, sample

rate conversion

asynchronous sample rate converter LSI. It reads 16

or 20-bit word length input data, and writes 16, 18,

or 20-bit word length output data. It also features a

built-in digital deemphasis ﬁlter and digital

attenuator.

■ Input data jitter elimination

The SM5844AF operates from a 5 V supply, and is

available in 44-pin QFPs.

PINOUT

FEATURES

Functions

■ Left/right-channel processing (stereo)

■ Input sample rate (fsi) ranges

• 24 to 48 kHz (256fsi mode)

• 27 to 55 kHz (384fsi mode)

■ Output sample rate (fso) range

• 20 to 100 kHz

VSS

BCKI

RSTN

LRCI

TST2N

TST1N

STATE

ICLK

ICKSL

IFM1

IFM2

IISN

OW20N

■ Sample rate conversion ratio (fso/fsi)

• 0.5 to 2.0 times

■ Asynchronous input and output timing (clock

inputs)

■ System clock inputs (input and output clocks

independent)

• 256fsi or 384fsi input system clock

• 256fso or 384fso output system clock

■ Deemphasis ﬁlter

PACKAGE DIMENSIONS

Unit: mm

• IIR-type ﬁlter

44-pin QFP

• 44.1, 48 or 32 kHz

■ Digital attenuator

• 11-bit data for 1025 levels

• Smooth, incremental attenuation change

• +12 dB gain shift function

■ Direct mute function

12.80 0.30

10.00

■ Through mode operation

• Input to output direct

■ Output data clocks (LRCO, BCKO)

• External input (slave mode)

• Output system clock generated internally

(master mode)

■ CMOS-level input/outputs

■ 5 V (standard) single supply

■ 44-pin QFP

0.60 0.20

0.35 0.10

0.80

■ Molybdenum-gate CMOS process

NIPPON PRECISION CIRCUITS—1

12 3 4 5 6 7...26

中文翻译

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