SM5904CF

更新时间： 2024-01-26 06:29:24

品牌	Logo	应用领域
NPC		消费电路商用集成电路
页数	文件大小	规格书
35页	262K
描述
compression and non compression type

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技术参数
数据手册

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SM5904CF 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	QFP, QFP44,.5SQ,32	Reach Compliance Code：	unknown
风险等级：	5.78	Is Samacsys：	N
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	S-PQFP-G44
JESD-609代码：	e0	端子数量：	44
最高工作温度：	70 °C	最低工作温度：	-10 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QFP
封装等效代码：	QFP44,.5SQ,32	封装形状：	SQUARE
封装形式：	FLATPACK	电源：	3 V
认证状态：	Not Qualified	子类别：	Other Consumer ICs
最大压摆率：	18 mA	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	0.8 mm	端子位置：	QUAD
Base Number Matches：	1

SM5904CF 数据手册

SM5904CF

compression and non compression type

shock-proof memory controller

NIPPON PRECISION CIRCUITS INC.

Overview

The SM5904CF is a compression and non com-

pression type shock-proof memory controller LSI for

compact disc players. The compression level can

be set in 4 levels, and external 4M DRAM can be

connected to expand the memory to 4M bits. Digital

attenuator, soft mute and related functions are also

incorporated. It operates from a 2.5 to 3.3 V supply

voltage range.

Features

- 2-channel processing

Data residual detector:

- Serial data input

15-bit operation, 16-bit output

Digital attenuator

2s complement, 16-bit/MSB first, right-justified

format

8-bit setting

- Wide capture function

Soft attenuator function

(up to 3 × speed input rate)

- System clock input

Noiseless attenuation-level switching

(256- step switching in 23 ms max.)

Soft mute function

384fs (16.9344 MHz)

- Shock-proof memory controller

ADPCM compression method

4-level compression mode selectable

4-bit compression mode 2.78 s/Mbit

5-bit compression mode 2.22 s/Mbit

6-bit compression mode 1.85 s/Mbit

Full-bit non compression mode 0.74 s/Mbit

External DRAM configurations usable

2 × 4M DRAM (1M × 4 bits)

Internal and External 4M DRAM

1 × 4M DRAM (1M × 4 bits)

Only Internal 4M DRAM

Mute ON in 23 ms max.

Direct return after soft mute release

Forced mute

- Extension I/O

Microcontroller interface for external control

using 4 extension I/O pins

- +2.5 to + 3.3 V operating voltage range

- Schmitt inputs

All input pins (including I/O pins) except CLK

(system clock)

- Reset signal noise elimination

Approximately 3.8 µs or longer (65 system

clock pulses) continuous LOW-level reset

- Digital audio interface (DIT)

- 44-pin QFP package (0.8 mm pin pitch)

- Compression mode selectable

- Microcontroller interface

Serial command write and status read-out

Ordering Information

SM5904CF 44pin QFP

NIPPON PRECISION CIRCUITS-1

12 3 4 5 6 7...35

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