TDA7590_09 Datasheet, PDF (1/42 Pages) STMicroelectronics – Digital signal processing IC for speech and audio applications

TDA7590
Digital signal processing IC for speech and
audio applications
Features
■ 24-bit, fixed point, 120 MIPS DSP core
■ Large on-board memory (128KW-24 bit)
■ Host access to internal RAM through
expansion port
■ Access to external RAM (16Mw) through
expansion port
■ Integrated stereo, 18-bit Sigma-DELTA A/D
and 20-bit D/A converters
■ Programmable CODEC sample rate up to 48 kHz
■ On-board PLL for core clock and converters
■ External Flash/SRAM memory bank
management
■ I²C and SCI serial interface for external control
■ 2 enhanced synchronous serial interface (ESSI)
■ JTAG interface
■ Host interface
■ 144-pin TQFP, 0.50 mm pitch
■ Automotive temperature range
(from -40 °C to +85 °C)
Applications
■ Real time digital speech and audio processing:
– speech recognition
– speech synthesis
– speech compression
– echo canceling
– noise canceling
– MP3 decoding
TQFP144
Description
The TDA7590 is a high performances, fully
programmable 24-bit, 120 MIPS. Digital signal
processor (DSP), designed to support several
speech and audio applications, as automatic
speech recognition, speech synthesis, MP3
decoding, echo and noise cancellation.
Nevertheless, the embedded CODECs bandwidth
and the generic processing engine allow to
proceed also full-band audio signals. The large
amount of on-chip memory (128 Kwords),
together with the 16 Mwords external memory
addressable and the 32 general purpose I/O pins
permit to build a DSP-system avoiding the usage
of an additional microcontroller.
The presence of serial and parallel interfaces
allows easy connection with external devices
including CODECs, DSPs, microprocessors and
personal computers.
In particular, the debug/JTAG interface permits the
on-chip emulation of the firmware developed.
Further, the presence of the timers and watchdog
block makes TDA7590 suitable for PWM
processing and allows the integration of a system
watchdog.
Table 1. Device summary
Order code
Package
E-TDA7590
E-TDA7590TR
TQFP144 (20x20x1.0 exposed pad down)⁽¹⁾
1. In ECOPACK® package (see Section 9: Package information on page 40).
Packing
Tray
Tape and reel
January 2009
Rev 2
1/42
www.st.com
1