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MSS2105-1 Datasheet(PDF) 4 Page - Mosel Vitelic, Corp |
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MSS2105-1 Datasheet(HTML) 4 Page - Mosel Vitelic, Corp |
4 / 27 page MOSEL VITELIC INC. 4/27 PID248*** 08/96 Specifications subject to change without notice, contact your sales representatives for the most recent information. MSS2105/S3205/S4305/S6605 preliminary Cout This pin can drive speaker through a transistor. Cout is tristate during standby. Cout has zero current output when sound data is zero. Cout has full current output when sound data is the highest. Cout has half of full current output when sound is silence at middle data value. Cout has half of full current output when playing sound at appended memory-less mute. The bypass Cout Resistor is used to bypass the audio output current from Cout. This bypassing extra current to ground gives a way to prevent the saturation of audio waveform amplified by transistor. This Resistance is 470 ohm typically. It always is not very small. Or user can let it open if the transistor has a fair beta value. A transistor with beta value 150 is sufficient for typical applications. Larger beta value get larger sound but may have the amplified waveform saturated. 8 ohm speaker is recommended. The speaker characeristics and housing impacts the loudness very much. Vout1, Vout2 They are tristate during standby state. These two pins can drive buzzer directly. The piezo buzzer used should have its resonant frequency at the center of your sound frequency domain or you are unable to play your sound good by this buzzer. For instance, you have your sound spans over frequency from 100 Hz through 1 KHz. A buzzer with resonant frequency at 300 Hz will play this sound good. A buzzer with resonant frequency at 1 KHz will distort the sound very much because that most of the energy of the playback sound is unable to be played by this buzzer. TG0, TG1, TG2, TG3, TG4, TG5, TG6 These 7 pins have 4 ways to perform. The lst way (KBD addressing 1): When user defines less than 11 sentences, a Vss pulse wider than t T applied to TG0 plays sentence 2, TG1 plays sentence 3,..., TG6 plays sectence 8. Of course, the fabrication should be masked as Keyboard addressing. The 2nd way (KBD addressing 2): When user defines more than 10 sentences, he can access the first ten sentences by way 1st. To access the 11st sentence or higher, these 7 pins are played as the S-tree. TG6 means 8, TG5 means 7, ..., TG0 means 2. Of course, the fabrication should be masked as Keyboard addressing. The 3rd way (Matrix addressing ): To coorperate with TG7 as well as 7 ROWn pins Signals (ROW0 through ROW6), they form an 8x7 matrix in 56 cross points. The touch of a cross point activates a trigger signal to play repectively sentence. Of course, the fabrication should be masked as matrix addressing. The 4th way (CPU addressing): They are 7-bit high-true addresses to specify the section to be played among 128. TG6 is the MSB while TG0 is the LSB. They should meet the address hold time required, t H. Of course, the fabrication should be masked as cpu addressing. TG7 This pin has 4 ways to perform. The 1st way (KBD addressing 1): When user defines less than 11 sentences, a Vss pulse wider than t T applied to TG7 plays sentence 9. Of course, the fabrication should be masked as Keyboard addressing. The 2nd way (KBD addressing 2): When user defines more than 10 sentences, he can access the first ten sentences by way 1st. To access the 11st sentence or higher, this TG7 means number 9 of S-tree. Of course, the fabrication should be masked as Keyboard addressing. The 3rd way (Matrix addressing ): To coorperate with 7 TGn pins (TG0 through TG6) as well as 7 ROWn pins (ROW0 through ROW6), they form an 8x7 matrix in 56 cross points. The touch of a cross point activates a trigger signal to play repectively sentence. Of course, the fabrication should be masked as matrix addressing. The 4th way (CPU addressing): Address Strobe. Its rising edge latches the 7-bit addresses and starts the playing. Its falling edge stops immediately the playing sound, activates (or keeps) the busy output to be high, activates the audio output to stay at center value, activates the LED output. Its width should be wide enough as t W. Of course, the fabrication should be masked as cpu addressing. ROW0, 1, 2, 3, 4, 5, 6 These 7 pins have 3 ways to perform. The 1st way (KBD addressing 1): When user defines less than 11 sentences, a Vss pulse wider than t T applied to ROW6 plays sentence 1, ROW5 plays sectence 0. Of course, the fabrication should be masked as KeyBoard addressing. The 2nd way (KBD addressing 2): When user defines more than 10 sentences, of |
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