MSM9810 View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

MSM9810

8-channel Mixing OKI ADPCM Type Voice Synthesis LSI

Oki Electric Industry 

¡ Semiconductor

MSM9810

9-1 START Command

The START command starts voice synthesis of the channel corresponding to the data stored in

the TMP register. Table 9-4 shows the correspondence between data input (D7-D0) and channels.

For serial input, the sequence of D7-D0 and serial input data is shown in Figure 8-2.

Table 9-4 Correspondence between D7-D0 and Channels

Data bus

D7 D6 D5 D4 D3 D2 D1 D0

Corresponding channel CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1

When the START command is input, data stored in the TMP register is set at the start register,

and voice synthesis processing starts. For example, when all “ 1” is written from the data bus to

the TMP register and the START command is input, all channels start voice synthesis

simultaneously.

Input the START command when the status signal (NCR or BUSY) of the channel to be started

is at “H”. When NCR is “L”, input is disabled.

Figure 9-1 shows the flowchart when the START command is input.

RD pulse input

NCRn="H"

NO

YES

Subcommand input

START command input

NCRn corresponding to each channel is output

to D7-D0

Check that D7-D0 corresponding to the channel

to start voice synthesis is "H".

After setting "H" to D7-D0 corresponding to the

channel to start voice synthesis from the data

bus, input the WR pulse. (Set CMD to "H".)

Figure 9-1 START Command Input Flow

9-2 STOP Command

The STOP command stops voice synthesis processing of the channel corresponding to data

stored in the TMP register. Table 9-5 shows the correspondence between data input (D7-D0) and

channels.

Table 9-5 Correspondence between D7-D0 and channels

Data bus

D7 D6 D5 D4 D3 D2 D1 D0

Corresponding channel CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1

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