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MSS2105-1 Datasheet(PDF) 6 Page - Mosel Vitelic, Corp |
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MSS2105-1 Datasheet(HTML) 6 Page - Mosel Vitelic, Corp |
6 / 27 page MOSEL VITELIC INC. 6/27 PID248*** 08/96 Specifications subject to change without notice, contact your sales representatives for the most recent information. MSS2105/S3205/S4305/S6605 preliminary Retrigger Trigger Retriggerable Trigger-m means the sentence-m addressed by Trigger-m could be retriggerred by other Triggers. It can be retriggerred by itself. Cycle Loop It is determined automativally by the sentences user defined at fabrication. Continue OKY & Home OKY This is a function belongs to OKY and determines the play sequence when the first OKY comes after any other trigger addressing. The "continue" preserves the sequence while the "home"rewinds to the very beginning. You will see a term S.W.A.I. in this data sheet, it means sequence when after interrupt by other trigger addressing. Smaple Rate There are some parameters are sample rate dependent. They aare debounce time, LED fix flash frequency and Stop pulse width. The numbers mentioned in this data sheet are based on 6 KHz sample rate typically, but just typical . Smaller Rosc playback quicker - higher pixel rate. MVI provides voice chip with very flat response for playback vs working voltage. Higher working voltage get slower playback but insignificantly. Stop Pulse Stop pulse is one of Status definition. This Stop pulse is not guaranteed when user defines the trigger behavior as Holdable. Key Priority The key priority defines which trigger is to be acknowledged when two or more triggers are being activated. For both KeyBoard and Matrix addressing modes, no key priority is guaranteed. It means when playing a sound, only one key is promised, further triggers is not guaranteed until when this sentence is accomplished and trigger is released. Terms To play words concatenated To play two words concatenated at cpu addressing mode, cpu should take care during the interval in between. When detecting the busy signal falls to low, the next word had better to start in within t PL. Because during this t PL interval, the Cout sounds silent but keeps at the center of full scale. The former word starts within t PL interval will start smoothly without abrupt potential change on current through speaker. Longer than the t PL interval the Cout begins ramp down interval, it is recommended to not start the former word. It does not sound bad, but ramp up starts at the ramp down interval is not preferred. Parallel chips Parallel chips share a speaker is not recommended at cpu addressing mode. Please don't use this solution. MVI offers 120" chip to replace this parallel chips solution. When user insists to adopt this solution due to no alternate, the cpu should take care when playing two words simultaneously or concatenated from two respective chips. As described, the silence hears nothing on speaker but there is signal potential appears on Cout output pin. There are four occurances to have potential signal on Cout but you hear nothing. With Two sources both have any one of above occurances, the summation will cause particular signal output and even noice. These four occurances are (1) silence from ramp up (2) silence from ramp down (3) silence from at middle data value either in-between sound or in interval t PL (4) silence form appended memory-less mute. To left sentence empty User may not define every sentence. But every sentence accessed by OKY must be defined, cannot be empty. This kind of mis-use always happens when customer define several not concatenated sentences under matrix addressing mode. At this time, OKY is not allowed to access or the error may occur due to there is empty sentence. Application Notes |
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