msm9810 Oki Semiconductor, msm9810 Datasheet - Page 15

• Manufacturer Part Number: msm9810
• Description: 8-channel Mixing Oki Adpcm Type Voice Synthesis Lsi
• Manufacturer: Oki Semiconductor

¡ Semiconductor
output waveform has a step waveform synchronized with sampling frequency.
output can be selected by option.
is serial input interface. Either of the two interfaces can be selected with the SERIAL pin. The
parallel input interface is selected when SERIAL is at a "L" level.
commands using D7 to D0 (data buses) and control pins CMD, CS, WR, and RD. The internal
status register is used to check the status of the LSI.
commands using serial data input pin SD and serial clock input pin SI, and control pins CMD,
CS, WR, and RD.
or the serial input interface is selected.
6. Voice Output
The voice is output as 14-bit D/A converter output in stereo (LDAO, RDAO), with L/R in phase.
The output amplitude from the D/A converter has a maximum (16383/16384) ¥ V
The command option has been set for voice output. D/A converter output and voltage follower
7. Microcomputer Interface
There are two types of interface with microcomputer; one is parallel input interface and the other
The serial input interface is selected when SERIAL is at "H" level.
When the parallel input interface is selected, the MSM9810 is controlled by nine different
When the serial input interface is selected, the MSM9810 is controlled by nine different
The SO, SR3, SR2, SR1 and SR0 pins are used to check the status of the LSI.
The pins 21 to 28 function differently according to whether the parallel input interface is selected
The table 7-1 shows the pin names. See "PIN DESCRIPTIONS" for their functions.
Table 7-1 Difference between parallel input and serial input pins
Pin number
Parallel input
Serial input
D7
SD
21
D6
22
SI
D5
SO
23
UD
D4
24
SR3
D3
25
SR2
D2
26
SR1
D1
27
SR0
D0
28
DD
MSM9810
, and the
15/31