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SNC362 Datasheet(PDF) 3 Page - SONiX Technology Company |
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SNC362 Datasheet(HTML) 3 Page - SONiX Technology Company |
3 / 11 page SNC362 Direct Drive Voice/Dual Tone Melody Controller 5 FUNCTION DESCRIPTIONS 5.1. Oscillator SNC362 accept RC type oscillator for system clock. The typical circuit diagram for oscillator is listed as follow. OSC VCC RC Oscillator 5.2. ROM SNC362 contains substantial 96K words (10-bit) internal ROM. Program, voices and other data are shared with this same 96K words ROM. 5.3. RAM SNC362 contains 128 nibbles RAM. The 128 nibbles RAM are divided into eight pages (page 0 to page 7, 16 nibbles RAM on each page). In our programming structure, users can easily define and locate RAM page in the program. For instance, users can use the instructions, PAGEn (n=0 to 7) to switch and indicate the RAM page. Besides, users can use direct mode, M0 ~ M15 in the data transfer type instructions, to access all 16 nibbles of each page. 5.4. Power Down Mode “End” instruction will power down SNC362 and enable IC to consume fewer current for power saving. (<3uA @VDD=3V and <5uA @VDD=5V) Please be aware that when the power down mode is activated in SNC362, any valid data transition (L H or H L) occurring on any input port (P1) or IO ports (P2 and P3) will lead SNC362 back to normal operation mode. 5.5. Sampling Rate Counter The unique sampling rate counter is designed in voice channel to be able to play diverse voices at different sample playing rates. The playing rate can be adaptively set up among from the wide ranges of 2.5KHz to 20KHz. This feature makes voice close to its original source and yield the better voice quality. Ver: 1.2 December 26, 2002 3 |
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