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SM5859AF PDF预览

SM5859AF

更新时间: 2024-01-21 15:31:29
品牌 Logo 应用领域
NPC 内存控制器消费电路商用集成电路
页数 文件大小 规格书
33页 172K
描述
compression and non compression type antishock memory controller

SM5859AF 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:QFP, QFP44,.5SQ,32Reach Compliance Code:unknown
风险等级:5.76商用集成电路类型:CONSUMER CIRCUIT
JESD-30 代码:S-PQFP-G44端子数量:44
最高工作温度:85 °C最低工作温度:-40 °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:3/5 V
认证状态:Not Qualified子类别:Other Consumer ICs
最大压摆率:13 mA表面贴装:YES
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:0.8 mm端子位置:QUAD
Base Number Matches:1

SM5859AF 数据手册

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SM5859AF  
compression and non compression type anti-  
shock memory controller  
NIPPON PRECISION CIRCUITS INC.  
Overview  
The SM5859 is a compression and non compres-  
sion type anti-shock memory controller LSI for com-  
pact disc players. The compression level can be set  
in 4 levels, and external memory can be selected  
from 4 options (1M, 1M×2, 4M, 4M×2). Digital atten-  
uator, soft mute and related functions are also  
incorporated. It operates from a 2.7 to 5.5 V wide  
supply voltage range.  
Features  
- 2-channel processing  
Digital attenuator  
- Serial data input  
Full-bit setting  
2s complement, 16-bit/MSB first, rear-packed  
format  
Soft attenuator function  
Noiseless attenuation-level switching  
(256- step switching in 23 ms max.)  
Soft mute function  
- System clock input  
384fs (16.9344 MHz)  
- Anti-shock 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  
4 external DRAM configurations selectable  
2×4M DRAM (1M×4 bits)  
Mute ON in 23 ms max.  
Direct return after soft mute release  
Forced mute  
- Extension I/O  
Microcontroller interface for external control  
using 5 extension I/O pins  
- +2.7 to +5.5 V wide operating voltage range  
- Schmitt inputs  
All input pins (including I/O pins) except CLK  
(system clock)  
1×4M DRAM (1M×4 bits)  
- Reset signal noise elimination  
Approximately 3.8 µs or longer (65 system  
clock pulses) continuous LOW-level reset  
- 44-pin QFP package (0.8 mm pin pitch)  
2×1M DRAM (256K×4 bits)  
1×1M DRAM (256K×4 bits)  
- Compression mode selectable  
- Microcontroller interface  
Serial command write and state read-out  
Data residual quantity detector:  
15-bit operation, 16-bit output  
NIPPON PRECISION CIRCUITS-1  

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