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參數資料
| 型號： | MSM6789 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | SBC Solid-State Recorder IC |
| 中文描述： | 西南貝爾固態(tài)記錄器集成電路 |
| 文件頁數： | 1/53頁 |
| 文件大小： | 813K |
| 代理商： | MSM6789 |
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Semiconductor
MSM6789A/6789L
MSM6789A/6789L
GENERAL DESCRIPTION
The MSM6789A/6789L, an improved version of MSM6788, is a solid-state recorder developed using
the Sub Band Coding (SBC) method.
Just like MSM6788, the MSM6789A/6789L has a stand-alone mode and a microcontroller interface
mode. In the stand-alone mode, record/playback conditions can be selected from pins and the
MSM6789A/6789L can be controlled by a simple drive timing. In the microcontroller interface mode,
record/playback can be controlled by commands from the microcontroller, and more functions are
available than in the stand-alone mode.
The MSM6789A/6789L can directly drive serial voice ROM as external memory as well as serial
register or general-purpose DRAM* (1-bit
￥
or 4-bit
￥
type selectable) as external memories, which
allows a recording and playback circuit with fixed messages to be built easily. The method from
microcontroller is the same as the MSM6788.
* Only for MSM6789A
Difference between MSM6788 and MSM6789A
MSM6788
Unavailable
No
No
MSM6789A
Available
Yes
Yes
General DRAM
Unvoiced-part elimination function
PCM playback
SBC method:
The SBC method divides voice frequencies into five bands and codes the component for each of
the bands separately, as shown below.
SBC Solid-State Recorder IC
Note:
This data sheet explains a stand-alone mode and a microcontroller interface mode, separately.
ch 1
ch 2
ch 3
ch 4
ch 5
1
2
f (Hz)
3
0
kHz
Gain
@f
s
=8.0 Hz
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| MSM6882-3 | 2400/1200 bps Single Chip MSK Modem |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MSM6789A | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:SBC Solid-State Recorder IC |
| MSM6789L | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:SBC Solid-State Recorder IC |
| MSM6791 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DRAM Interface IC |
| MSM6794 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DOT MATRIX LCD DRIVER WITH 128-CHANNEL RAM |
| MSM67P620 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:HIGH PERFORMANCE CMOS 16-BIT SINGLE CHIP MICROCONTROLLER |
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