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. Command Data and Subcommand Data

In parallel input, command data and subcommand data are controlled by the data bus of D7-D0

pins and by CMD, CS and WR control pins. In serial input, command data and subcommand data

are controlled by data input/output of SD, SI and SO pins and by CMD, CS and WR control pins.

This LSI reads data to the internal register (TMP register) by executing the subcommand, and

transfers data of the TMP register to the register of each command function and executes data by

executing the command.

A subcommand and command are distinguished by the level of the CMD pin. “H” level indicates

a subcommand, and “L” level indicates a command.

Table 9-1 shows the command data list, Table 9-2 shows details of C2-C0 of Table 9-1 (channel

specification), and Table 9-3 shows subcommand data list corresponding to command data.

Table 9-1 Command Data List

D7 D6 D5 D4 D3 D2 D1 D0

Function

1 START

2 STOP

3 LOOP

4 OPT

5 MUON

6 FADR

0 0 0 0 0 X X X Starts playback of the channel for which data stored in the register is "H".

0 0 0 0 1 X X X Stops playback of channel for which data stored in the register is "H".

0 0 0 1 0 X X X Repeats playback of channel for which data stored in the regiter is "H".

0 0 0 1 1 X X X Changes option by command.

0 0 1 0 0 C2 C1 C0 Inserts silence corresponding to the length of data stored in the register.

0 0 1 0 1 C2 C1 C0 Transfers phrase address stored in the register to the phrase register

of the specified channel.

7 DADR 0 0 1 1 0 C2 C1 C0 This command internally transfers the 7-byte start and stop address,

the value of sampling frequency and playback algorithm which are

stored in the TMP register.

8 CVOL

0 0 1 1 1 C2 C1 C0 Changes volume of the specified channel to the volume of data stored

in the register.

9 PAN

0 1 0 0 0 C2 C1 C0 Changes volume of the right and left D/A converter to volume of data

stored in the register.

(X - - - don’t care. For C1, C2 and C0, see Table 9-2.)

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