TC9447F

TC9447F TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC9447F Single-Chip Audio Digital Signal Processor The TC9447F is a single-chip audio digital signal processor incorporating an AD/DA converter. The built-in program memory (ROM) can contain a range of application programs for concert hall acoustic field simulation, for digital filters such as equalizers, and for dynamic range control. In addition, the device includes 64kb of data delay RAM, making external RAM unnecessary. Features · · · · · · Incorporates a 1-bit Σ∆-type AD converter (two channels). THD: −82dB, S/N ratio: 95dB (typ.) Incorporates a 1-bit Σ∆-type DA converter (four channels). THD: −85dB, S/N ratio: 100dB (typ.) A ±10-dB attenuator is built into the DA converter output block (two channels only) Each port has a digital input/output (three lead-type) A built-in self-boot function automatically sets the coefficients and register values at initialization. Boot ROM Data bus Multiplier/adder Accumulator Program ROM Coefficient RAM Coefficient ROM Offset RAM Data RAM Operation speed · · · · : 1024 words × 18 bits : 24 bits : 24 bits × 16 bits + 43 bits → 43 bits : 43 bits (sign extension: 4 bits) : 1024 words × 32 bits : 320 words × 16 bits : 256 words × 16 bits : 64 words × 16 bits : 256 words × 24 bits : 44ns (510-step (approx) operation per cycle at fs = 44.1 kHz) The DSP block specifications are as follows: Weight: 1.57g (typ.) Interface buffer RAM : 32 words × 16 bits Incorporates data delay ...