SAA7346 Datasheet | NXP Semiconductors

INTEGRATED CIRCUITS DATA SHEET SAA7346 Shock absorbing RAM addresser Preliminary specification File under Integrated Circuits, IC01 July 1994 Philips Semiconductors Philips Semiconductors Preliminary specification Shock absorbing RAM addresser Features - Absorbs shocks from x, y and z directions - Absorbs rotational shocks - Absorbs multiple shocks per second - Interfaces directly to pact disc decoders SAA7345, SAA7347 and SAA7370 - Multi-speed I2S-bus input with single-speed I2S-bus output - Controls 1 or 4 MBit of external Dynamic Random Access Memory (DRAM) - Easy serial interface for munication with mon microcontrollers - Software selectable shock detectors - By-pass/power-down mode - Kill interface for DAC deactivation - Can be used for: - ‘sampling’ part of a disc - to reduce access pauses between jumps - to deliver a programmable delay - to generate a fixed audio rate from Constant Angular Velocity (CAV) discs. QUICK REFERENCE DATA SYMBOL VDD IDD fclk fi(clk) fo(clk) Tamb Tstg PARAMETER supply voltage supply current clock frequency I2S input word clock frequency I2S output word clock frequency operating ambient temperature storage temperature - - 44.1 44.1 - 40 - 65 MIN. 3.3 12 16.9344 88.2 88.2 - - TYP. 5.0 - - 176.4 176.4 +85 +150 GENERAL DESCRIPTION The SAA7346 can be used to make a CD player insensitive to shocks. To do this, SAA7346 operates closely with a standard 1 Mbit or 4 Mbit DRAM. Audio data is stored inside the DRAM and during shocks the data of the DRAM can be played. The SAA7346 functions as a customized DRAM controller with serial I/O and on-board shock...