AT75C系列芯片解密及性能描述

来源：IC解密 DSP subsystem is an autonomous DSP-based computation block that coexists on-chip with other processors and functions. It is built around a 16-bit, fixedpoint, industry-standard OakDSPCore. Additionally, the DSP subsystem embeds all elements necessary to run complex DSP algorithms independently without any external resources.
   The self-contained subsystem contains the OakDSPCore itself, program memory,data memory, an on-chip emulation module and a flexible codec interface. These resources allow the subsystem to run complex DSP routines, such as V.34 modem emulation or state-of-the-art voice compression.
   The codec interface permits connection of any external industry-standard codec device, allowing the DSP subsystem to handle directly external analog signals such as telephone line or handset signals.Communication between the DSP subsystem and the on-chip ARM7TDMI™ core isachieved through a semaphore-operated dual-port mailbox.