OTP语音芯片资料.doc

LXB20? Description LXB20 is a 20 Sec Easy Use Speech IC .It Support PWM or DAC voice output with high quality speech , There are 20 second Voice Length under 6 KHz sampling and 4 bit hardware compression. Its internal built-in a oscillator for system clock without an external resistor. Maximum 63 voice groups. One Group contain several steps(voice section ); Maximum 700 steps for all the Groups. Each Step can be define Trigger Mode, Output Status, Voice Section, Mute length, I/O Type Simple Programming Function. User can select 8bit / 5bit / 4bit data compression. Support three mode trigger IC (Stand Alone, Serial Trigger Mode, CPU Command Mode ). Easy use development system is for function selection and voice combination . PC download the ROM code by the USB Port . ? Functions ? ? ? ? ? ? ? ? ? ? MAX voice file : 700 MAX Trigger Groups : 63 Power On Trigger Group :1 MAX Step : 700 Signal step mute length : 0.64 s ( 6k sample rate ) Operating Voltage range: 2.4V ~ 3.6V Total Voice Duration : 20” (120K Samples) I/O pin : 4 Voice output : PWM or DAC Sequential Key : TG1 - 32 Groups. TG2 - 29 Groups. TG3,TG4- 1 Group Debounce time : 50 us or 10 ms On/Off function : only for all TG PIN Sequential Key for Volume control function. Step can change Trigger I/O Type, Trigger Mode Output Status. Hardware Trigger Group Repeat function. Simple Programming Function : ? (a) Write data to working register. ? (b) Working Register Increasing. ? (c) Step Jump by Working Register / Volume Status. ? ? ? ? ? ? V. 2.02 1 7/26/2010 LXB20 ● Three Mode Trigger IC : - Key Stand-alone Trigger Mode : A. Edge/Level B. Hold/Unhold C. Retrigger/Irretrigger - Serial Trigger Mode : Combinations of TG1 and TG2 to trigger maximum 63 Voice Group. - CPU Command Mode : User command through TG1,TG2,TG3 TG4 with serial CPU Interface to control the Multi-Playback function. ● Output status (for each Output pin): A. Stand by Status. (High/Low Status) B. Busy Low Active. C. Busy High Active. D. LED Flash a