SC-614

The SC-614 is a low-cost, mixed-signal processor that combines a speech synthesizer, general-purpose I/O, onboard ROM, and direct speaker-drive in a single package. The computational unit utilizes a powerful new DSP which gives the SC-614 unprecedented speed and computational flexibility compared with previous devices of its type. The SC-614 supports a variety of speech and audio coding algorithms, providing a range of options with respect to speech duration and sound quality.

The SC-614 consists of a micro-DSP core, embedded program, and data memory, and a self-contained clock generation system. General-purpose periphery is comprised of 64 bits of partially configurable I/O.

The core processor is a general-purpose 16-bit microcontroller with DSP capability. The basic core block includes computational unit (CU), data address unit, program address unit, two timers, eight level interrupt processor, and several system and control registers. The core processor gives the SC-614 break-point capability in emulation.

The processor is Harvard type for efficient DSP algorithm execution. SC-614 requires separate program and data memory blocks to permit simultaneous access. It is configured in 32K 17-bit words.

The total ROM space is divided into two areas:
1. The lower 2K words are reserved by Sensory for the purposes of a built-in self-test
2. The upper 30K is for user program/data