ST3024 Просмотр технического описания (PDF) - Sitronix Technology Co., Ltd.
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ST3024 Datasheet PDF : 13 Pages
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1 FEATURES
nDSP based voice/audio processor
nOperation voltage
– Core logic: 2.25V~2.7V
– I/O pads: 3.0V~3.6V
nVoltage regulator for core logic
nLow Voltage Reset (LVR)
_ 2.5V low voltage reset
nOne PLL to generate high system
frequency from a 3MHz source
_ 12M~30MHz PLL output
nTriple clock sources
_ Crystal..................................3MHz
_ External input...… … … … ......3MHz
nLow power down current
_Typical current: 3uA
nOne 16-bit programmable Timer
nOne clocking output
nOne external interrupt
_ Edge/level trigger supported
nOne 14-bit direct-drive DAC
– Maximum current: 145mA
nMCU interfaces
_ Parallel mode
nTwo Serial PORT interfaces(SP)
_ Programmable data length from 8-bit to
16-bit
_ I2S, Left/Right Justified interfaces to external
DAC/ADC
ST3024
nSpeech playback/recorder
_ Low Bit Rate Compression (LBRC)
_ 1.2K/1.6K/2.4Kbps@8KHz playback
_ 1.6K/2.2K/3.3Kbps@11.025KHz playback
_ AB-repeat
_ Time stretch (speed up x 2, speed down x 2)
_ Combine syllable
_ Encryption
_ Audio Playback (CBR, VBR – all bit rates)
_ Forward/backward play, AB-repeat
_ Spectrum gain
_ Time stretch (speed up x 1.5, speed down x
1.5)
_ Combine syllable
_ Encryption
_ Wav Playback
_ Forward/backward play, AB-repeat
_ Wav Record {(MS-ADPCM(3.8:1)}
_ Software AGC
_ Motion-JPEG playback
_ JPEG-baseline decoder
_ RS-Word, RS-PY
_ TTS
2 GENERAL DESCRIPTION
The ST3024 is a highly integrated and cost-effective DSP based audio processor for various
consumer applications. It consists of one powerful DSP for advanced voice decoder and encoder
algorithms of natural speech with less memory. It provides low bit rate compression (LBRC) for voice
playback, audio playback, motion-JPEG playback, and JPEG-baseline decoder.
System clock comes from 3MHz crystal or external input.
ST3024 has 32 I/Os and these can be either GPIO or functional pins. Each pin can be programmed
to input or output. One external interrupt pin can be requested by external devices.
One internal 16-bit DAC can provide significant volume equipping with internal amplifier. For
particular application or recorder, two general audio interfaces are supported to interface with
external DAC/ADC. Audio interface can be configured to I2S or Left/Right Justified compatible
mode.
There are parallel interface to connect with different MCUs.
Preliminary Ver 0.1
Page 2/13
2007/06/20
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