1 Chip Audio Digital Signal Processor

TC9496AF is the 1 chip audio DSP which built in 24-bits, a 22.5 MIPS DSP core, 3 ch AD converter, 5 ch DA converter, and electronic volume for trims, and corresponds to a Multi-speaker system.

It is possible to realize many application, such as sound field control-hall simulation, for example-, digital filter for equalizers, dynamic range control, KARAOKE and something.

Features

● Incorporates 3 ch AD converter, 2 ch is 1 bit Σ-∆ type AD

converter for HiFi-Audio and 1 ch is 16 bit Multi-bit type AD

converter for Microphone.

2 ch HiFi-ADC (1 bitΣ-∆ type) S/N: 96dB (typ.)

1 ch Mic. ADC (16 bit Multi-bit type) S/N: 80dB (typ.)

● Incorporates 1 bitΣ-∆ type DA converter, and the attenuator for trims is built in each DAC output. In case of the

use which does not use a trim, It is possible to output the analog signal of DAC directly.

5 ch DAC (1 bitΣ-∆ type) S/N: 96dB (typ.)

Attenuator for trim 0dB to −24dB (1dB step)

● Each port has a digital input/output.

● A built-in self-boot function automatically sets the coefficients and register values at initialization.

Moreover, four kinds of boot data can be chosen by pin setup.

Boot ROM: 1024 word × 18 bit

● The DSP block specification are as follows:

Data bus: 24 bit

Multiplier/adder: 24 bit × 16 bit + 43 bit → 43 bit

Accumulator: 43 bit (sign extension: 4 bit)

Program ROM: 2048 word × 32 bit

Coefficient RAM: 448 word × 16 bit

Coefficient ROM: 256 word × 16 bit

Offset RAM: 64 word × 16 bit

Data RAM: 256 word × 24 bit

Operation speed: 44 ns (510-step (approx.) operation per cycle at fs = 44.1 kHz)

Interface buffer RAM: 32 word × 16 bit

● Incorporates data delay RAM of 64 kbit.

Delay RAM: 4096 word × 16 bit (64 kbit)

● The microcontroller interface can be selected between TOSHIBA original 3 line type and I2C bus format.

● CMOS silicon structure supports high speed.

● The package is a 100-pin flat package.