DatasheetsPDF.com

SM5902AF

Nippon Precision Circuits Inc
Part Number SM5902AF
Manufacturer Nippon Precision Circuits Inc
Description compression and non compression type shock-proof memory controller
Published Apr 7, 2005
Detailed Description SM5902AF NIPPON PRECISION CIRCUITS INC. compression and non compression type shock-proof memory controller Overview Th...
Datasheet PDF File SM5902AF PDF File

SM5902AF
SM5902AF


Overview
SM5902AF NIPPON PRECISION CIRCUITS INC.
compression and non compression type shock-proof memory controller Overview The SM5902 is a compression and non compression 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 - 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-voltage 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 µs or longer (65 system clock pulses) continuous LOW-level reset - Digital audio interface (DIT) - 44-pin QFP package (0.
8 mm pin pitch) Ordering Information SM5902AF 44pin QFP NIPPON PRE...



Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)