器件名称: ST3020
功能描述: Audio Decoder/ Encoder
文件大小: 356.24KB 共13页
简 介:ST3020
Audio Decoder/ Encoder
P r e l i m i n a r y
Datasheet
Version 0.1 2007/06/20
Note: Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice. This is not a final specification. Some parameters are subject to change
ST3020
1
FEATURES
n DSP based voice/audio processor n Operation voltage
– Core logic: 2.25V~2.7V
n Speech 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
– I/O pads: 3.0V~3.6V n Voltage regulator for core logic n Low Voltage Reset (LVR)
_ 2.5V low voltage reset
n One PLL to generate high system frequency from a 3MHz source
_ 12M~30MHz PLL output
n Triple clock sources
_ Crystal......................................3MHz _ External input... … … … … … ......3MHz
n Low power down current
_Typical current: 3uA
n One 16-bit programmable Timer n One clocking output n One external interrupt
_ Edge/level trigger supported
n One 14-bit direct-drive DAC
– Maximum current: 145mA
n MCU interfaces
_ Parallel mode
n Two Serial PORT……
