Overview
The LC83015E is a digital signal processor IC designed for medium- and high-class home audio systems, such as AV amplifiers, mini, super-mini and car audio component systems.
FEATUREs
• 80 ns cycle time at fs = 48kHz (256 cycles/fs)
• Dual-Harvard architecture allows single-cycle stereo signal integration and playback, with two of each of the following.
· 24 × 16-bit fixed decimal point multiplier.
· 32-bit arithmetic operation and 24-bit arithmetic logic operation ALU/shifter.
· 32-bit accumulator.
· 8 × 32-bit temporary storage registers.
· 64 × 24-bit internal data RAM.
· 128 × 16-bit internal coefficient RAM.
· 304 × 16-bit internal coefficient ROM.
• Large program memory.
· 1024 × 32-bit standard program ROM.
· 256 × 32-bit user program RAM.
• Standard program ROM.
· Sound-field simulation library.
Auditorium simulation.
Stereo, 3-band graphic equalizer.
12-band spectrum analyzer.
· Karaoke function library.
Pitch shift (realized in program RAM)
Vocal mute.
Microphone echo.
• Coefficient ROM.
· Logarithmic conversion coefficients.
• Audio interface.
· 2 input channels compatible with a variety of formats.
· 3 output channels compatible with a variety of 32/64fs formats.
• External memory interface.
· DRAM interface.
120 ns (maximum) RAS access time.
1Mbyte (256Kbyte × 4) or 256Kbyte (64Kbyte × 4).
1 or 2 units.
· SRAM/ROM interface.
100 ns (maximum) address access time.
1Mbyte (128Kbyte × 8) or 256Kbyte (32Kbyte × 8).
1 unit.
· Pseudo-SRAM interface.
70 ns (maximum) CE access time.
1Mbyte (128Kbyte × 8) or 256Kbyte (32Kbyte × 8).
1 unit.