SNC11C 데이터 시트보기 (PDF) - Sonix Technology Co., Ltd

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SNC11C

One Channel Direct Drive Speech Controller

Sonix Technology Co., Ltd 

SNC11C

One Channel Direct Drive Speech Controller

5 FUNCTION DESCRIPTIONS

5.1. Oscillator

SNC11C accepts RC type oscillator for system clock. The typical circuit diagram for

oscillator is listed as follows.

OSC

VCC

RC Oscillator

5.2. ROM

SNC11C contains substantial 320K word (10-bit) internal ROM. Program, voices and

other data are shared with this same 320K word ROM.

5.3. RAM

SNC11C contains 64 nibble RAM. The 64 nibble RAM is divided into four pages (page

0 to page 3, 16 nibble 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 3) 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 SNC11C 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 SNC11C, any valid data transition (L H or H L)

occurring on any input port (P1) or IO ports (P2 and P3) will lead SNC11C 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: 1.3

3

June 8, 2005

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