SAA7712H Sound Effects DSP

The SAA7712H provides for digital signal processing power in TV systems and home theatre systems. A DSP core is equipped with digital inputs and outputs, a 5-band parametric equalizer accelerator, a digital co-processor Interface and a Delay Line memory. This architecture accommodates on-chip standard sound processing, incredible surround, Dolby Pro Logic Surround and other surround sound processing algorithms. The architecture also supports co-processing, e.g. to add to the processing power of the internal DSP core or for multi-channel surround decoding. All settings and parameters are controlled by an IC-bus Interface The available Interfaces support a high application flexibility. The DSP core communicates over 32 dedicated Registers The selected digital input is master for the data rate of the DSP core. This input CAN be selected among 2 slave IS-bus inputs. The 4 outputs from the core are passed through 4 DACs and then routed to 4 output pins. Two master IS-bus outputs and two master IS-bus inputs CAN serve as an IS-bus co-processor Interface Eight of the remaining Registers are used for Communication with the hardware equalizer, and eight for Communication with the Delay Line memory. All IS-bus inputs and outputs support the Philips IS-bus format as well as 16, 18 and 20-bit LSB-justified formats.
By NXP Semiconductors