TT6297 Datasheet | Unknown Manufacturer

TT6297/TT6298 .. 4-CHANNEL ADPCM VOICE SYNTEHSIS LSI GENERAL DESCRIPTION The TT6297/TT6298 is a 4-channel mixing ADPCM voice synthesis LSI which offers one sound outputs with 4 channels . The TT6297/TT6298 can access an external voice data ROM for sound effects or speech voice. The maximum external ROM size is 16M/8M - 8 bit and can direct access. The TT6297/TT6298 has an 4-channel synthesis stage which allows the simultaneous playback of four different channels. It is used to have a voice with BGM (Back Ground Music) effect, instrumental sound, echo effect etc. Features - - - - - - - Advance ADPCM algorithm Number of bits/sample: 4 24 address lines (TT6297), 23 address lines (TT6298)for external ROM 8-bit control bus for mode setting External memory capacity 128Mbit for TT6297/64Mbit for TT6298 Interface with mon CPU and MPU Clock frequency with Sampling frequency: (clock 1 MHz to 4 MHz) - At 1.088 MHz clock DAO : 8 k Hz - At 2.176 MHz clock DAO : 16 k Hz - At 4.352 MHz clock DAO : 32 k Hz Number of words: 511 maximum Vocalization time:TT6297 :64 minutes maximum (at 8 k Hz, sample rate) TT6298 :32 minutes maximum (at 8 k Hz, sample rate) Sound output channel (DAO with 4 channels) Built-in DA converter: 12-bit DAO output format: A-class Voice level attenuation: Od B~-24d B on each channel (9steps) with -3d B/step Advance low power CMOS process 5 V or 3.3 V single power supply 48-pin plastic SSOP - - - - - - - - - 07’/06/11 Page 1 of 18 Ver :1.0 TT6297/TT6298 .. BLOCK DIAGRAM 07’/06/11 Page 2 of 18 Ver :1.0 TT6297/TT6298 .. PIN...