描述 Description

GPF16, a single-chip integrating multi-processors, equips μ'nSP? (16-bit CPU developed by Sunplus Technology) and 16-channel Sound Processor Unit (SPU) for electronic pianos, portable Karaoke or other similar products. With the 16-bit CPU running up to 27MHz, most of the voice compression algorithms can be utilized with MIDI synthesizer applications simultaneously. Furthermore, it has up to 32 programmable I/Os and 64K-word ROM for electronic instrument applications. Its low power consumption offers the potentials to be used in battery-powered products.The GPF16 provides not only the high-speed performance and high quality of 16 channels synthesizer, but it also integrates several powerful tools into the development system, such as development system with C language, assembly compiler, linker, source debugger functions and project management tools.

特性 Features

? μ'nSP? 16-bit CPU
? Equips 16-channel Sound Processor Unit (SPU) for MIDI synthesis applications
? 64K-word ROM for both programs and sound fonts (tone colors)
? 2K-word working RAM for programming or delay buffers
? 16-bit stereo DAC
? ADPCM sound fonts real-time decoding logic for each channel
? 7-bit Master volume control
? Max. 256 piece-wise slope with repetition for envelope control
? Variable sampling rates play back for sound fonts (tone colors) wave table samples
? Beat event IRQ and Envelope IRQ for MIDI event control
? Channel release control logic
? Built-in PLL to generate 27MHz internal clock with external 6MHz crystal
? 32768Hz real time counter
? Two 16-bit timers/counters (Programmable and Auto Reload)
? 32 general I/Os can be programmed bit by bit
? 13 interrupt sources: SPU, Timer, Timebase, External Input, Key wakeup…, etc.
? Key wakeup capability
? Built-in watchdog function