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SM5859AF Datasheet

Part Number SM5859AF
Manufacturers Nippon Precision Circuits Inc
Logo Nippon Precision Circuits Inc
Description compression and non compression type antishock memory controller
Datasheet SM5859AF DatasheetSM5859AF Datasheet (PDF)

SM5859AF compression and non compression type antishock memory controller NIPPON PRECISION CIRCUITS INC. Overview The SM5859 is a compression and non compression type anti-shock 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, 1M×2, 4M, 4M×2). Digital attenuator, soft mute and related functions are also incorporated. It operates from a 2.7 to 5.5 V wide supply voltage range. Features - 2-channe.

  SM5859AF   SM5859AF






compression and non compression type antishock memory controller

SM5859AF compression and non compression type antishock memory controller NIPPON PRECISION CIRCUITS INC. Overview The SM5859 is a compression and non compression type anti-shock 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, 1M×2, 4M, 4M×2). Digital attenuator, 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 - 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 .


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