sm5907af Seiko NPC Corp., sm5907af Datasheet

sm5907af

Manufacturer Part Number

sm5907af

Description

Compression And Non Compression Type Shock-proof Memory Controller

Manufacturer

Seiko NPC Corp.

Datasheet

1.SM5907AF.pdf (30 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

SM5907AF

Manufacturer:

NPC

Quantity:

20 000

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Download datasheet (382Kb)

The SM5907AF is a compression and non com-

pression type shock-proof memory controller LSI for

compact disc players. The compression level can

be set in 4 levels, and external memory can be

Overview

Features

NIPPON PRECISION CIRCUITS INC.

- 2-channel processing

- Serial data input

- System clock input

- Shock-proof memory controller

⋅ 2s complement, 16-bit/MSB first, right-justified

format

⋅ Wide capture function

⋅ 384fs (16.9344 MHz)

⋅ ADPCM compression method

⋅ 4-level compression mode selectable

⋅ 4 external DRAM configurations selectable

(up to 3 × speed input rate)

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

1 or 2 × 16M DRAM (4M × 4 bits, refresh

cycle = 2048 cycle)

1 or 2 × 4M DRAM (1M × 4 bits)

Ordering Information

SM5907AF

44-pin QFP

selected from 4 options (4M, 4M× 2, 16M, 16M× 2).

It operates from a 2.4 to 3.6 V supply voltage

range.

- Microcontroller interface

- Extension I/O

- +2.4 to +3.6 V operating voltage range

- Schmitt inputs

- Reset signal noise elimination

- 44-pin QFP package (0.8 mm pin pitch)

⋅ Serial command write and status read-out

⋅ Data residual detector:

⋅ Forced mute

15-bit operation, 16-bit output

Microcontroller interface for external control

using 5 extension I/O pins

All input pins (including I/O pins) except CLK

(system clock)

Approximately 3.8 µs or longer (65 system

clock pulses) continuous LOW-level reset

compression and non compression type

shock-proof memory controller

NIPPON PRECISION CIRCUITS-1

SM5907AF

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