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參數(shù)資料
| 型號： | SM5859AF |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | compression and non compression type antishock memory controller |
| 中文描述： | 壓縮和非壓縮型抗休克內(nèi)存控制器 |
| 文件頁數(shù)： | 1/33頁 |
| 文件大小： | 173K |
| 代理商： | SM5859AF |
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NIPPON PRECISION CIRCUITS INC.
NIPPON PRECISION CIRCUITS-1
SM5859AF
compression and non compression type anti-
shock memory controller
Overview
- 2-channel processing
- Serial data input
2s complement, 16-bit/MSB first, rear-packed
format
- 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)
1
×
4M DRAM (1M
×
4 bits)
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
Digital attenuator
Full-bit setting
Soft attenuator function
Noiseless attenuation-level switching
(256- step switching in 23 ms max.)
Soft mute function
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)
- Reset signal noise elimination
Approximately 3.8
μ
s or longer (65 system
clock pulses) continuous LOW-level reset
- 44-pin QFP package (0.8 mm pin pitch)
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SM5864AP | Digital Audio D/A Converter |
| SM5865AM | D/A Converter |
| SM5865CM | D/A Converter for Digital Audio |
| SM5866AS | D/A Converter for DSD and PCM |
| SM5871A | CMOS LSI(Digital Audio D/A Converter) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SM5864AP | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Digital Audio D/A Converter |
| SM5865AM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:D/A Converter |
| SM5865BM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:D/A Converter for Digital Audio |
| SM5865CM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:D/A Converter for Digital Audio |
| SM5866AS | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:D/A Converter for DSD and PCM |
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