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參數(shù)資料
| 型號(hào)： | SM5902AF |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | compression and non compression type shock-proof memory controller |
| 中文描述： | 壓縮和非壓縮式防震內(nèi)存控制器 |
| 文件頁(yè)數(shù)： | 1/40頁(yè) |
| 文件大?。?/td> | 312K |
| 代理商： | SM5902AF |
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NIPPON PRECISION CIRCUITS INC.
NIPPON PRECISION CIRCUITS-1
SM5902AF
compression and non compression type
shock-proof memory controller
Overview
- 2-channel processing
- Serial data input
2s complement, 16-bit/MSB first, right-justified
format
Wide capture function
(up to 3
×
speed input rate)
- System clock input
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
4 external DRAM configurations selectable
1
×
16M DRAM (4M
×
4 bits, refresh cycle =
2048 cycle)
1
×
or 2
×
4M DRAM (1M
×
4 bits)
1
×
1M DRAM (256k
×
4 bits)
DRAM at 5V operation is usable for Low-volt-
age operation
- Compression mode selectable
- Microcontroller interface
Serial command write and status read-out
Data residual detector:
15-bit operation, 16-bit output
Digital attenuator
8-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
- +2.4 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
- Digital audio interface (DIT)
- 44-pin QFP package (0.8 mm pin pitch)
The SM5902 is a compression and non compres-
sion type shock-proof memory controller LSI for
compact disc players. The compression level can
be set in 4 levels, and external memory can be
selected from 4 options (1M, 4M, 4M
×
2, 16M).
Digital attenuator, soft mute and related functions
are also incorporated. It operates from a 2.4 to 5.5
V wide supply voltage range.
Features
Ordering Information
SM5902AF
44pin QFP
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SM5903BF | compression and non compression type shock-proof memory controller |
| SM5903CF | compression and non compression type anti-shock memory controller |
| SM5904BF | compression and non compression type shock-proof memory controller |
| SM5904CF | compression and non compression type |
| SM5905AF | compression and non compression type shock-proof memory controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SM5903BF | 制造商:NPC 制造商全稱(chēng):Nippon Precision Circuits Inc 功能描述:compression and non compression type shock-proof memory controller |
| SM5903BF_00 | 制造商:NPC 制造商全稱(chēng):Nippon Precision Circuits Inc 功能描述:compression and non compression type shock-proof memory controller |
| SM5903CF | 制造商:NPC 制造商全稱(chēng):Nippon Precision Circuits Inc 功能描述:compression and non compression type anti-shock memory controller |
| SM5904BF | 制造商:NPC 制造商全稱(chēng):Nippon Precision Circuits Inc 功能描述:compression and non compression type shock-proof memory controller |
| SM5904CF | 制造商:NPC 制造商全稱(chēng):Nippon Precision Circuits Inc 功能描述:compression and non compression type |
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