MSM6789A/6789L SBC Solid-State Recorder ICThe
MSM6789A MSM6789L , an improved version of MSM6788, is a solid-state recorder
developed using the Sub Band Coding (SBC) method.
Just like MSM6788, the MSM6789A MSM6789L 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 MSM6789L 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 MSM6789L CAN directly drive serial voice ROM as external memory as
well as serial Register or general-purpose DRAM* (1-bit x or 4-bit x 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 br /> By Oki Semiconductor
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