ml2216 Oki Semiconductor, ml2216 Datasheet - Page 33

• Manufacturer Part Number: ml2216
• Description: Oki Adpcm2 Algorithm-based Speech Synthesis Lsi
• Manufacturer: Oki Semiconductor

7. MUON Command
MUON command is a 2-byte command. This command is used to insert silence between the 2 playback phrases.
The command first sets the MUON command, and next sets the silence time length. MUON command should be
input during the NCR signal of the playback is on the “H” level.
The silence length (M7 to M0) can be set in 252 steps between 20 ms and 1024 ms in 4 ms intervals.
Following is the equation to set the silence time length:
However, please set silent length (M7 to M0) as 04h or more.
T
The timing diagram shown below is a case of inserting a silence of 20 ms between the 2 phrases of address (F7 to F0
= 01H) and address (F7 to F0 = 01H).
When the PLAY command is input, the address control of phrase 1 ends, the phrase playback starts, and the NCR
signal goes “H” level. The MUON command is input after this NCR signal changes to the “H” level. After the
MUON command input, the NCR signal remains at “L” level up to the end of phrase 1 playback, and the device
enters into a state waiting for the phrase 1 playback to end.
When the phrase 1 playback finishes, the silence playback starts, and NCR signal goes “H” level. The PLAY
command that specified the next playback phrase 1 is input after this NCR signal has changed to the “H” level.
After the PLAY command input, the NCR signal once again returns to “L” level and the device enters the state
waiting for phrase 1 address control and the end of silence playback.
When the silence playback finishes, the phrase 1 playback starts, the NCR signal goes “H” level, and the device
enters a state in which it is possible to input the next PLAY or MUON command.
BUSY signal remains “L” level from input of the phrase 1 PLAY command up to the end of phrase 1 playback.
OKI Semiconductor
mu
status
AOUT
BUSY
NCR
SPM
= (2
SCK
SPP
• command
CS
DI
7
× (M7) + 2
Address management
1V
1/2VDD
1/2VDD
Command
PLAY command
standby
2
6
M7
nd
× (M6) + 2
0
byte
M6
1
5
× (M5) + 2
MUON command
M5
1
1
st
Waiting for playback to end
byte
M4
1
4
Playback
× (M4) + 2
t
cm
M3
MUON command
−
2
nd
M2
3
byte
−
× (M3) + 2
M1
−
Waiting for silence playback to end
PLAY command
2
× (M2) + 2
M0
−
1
st
Silence playback
byte
1 byte
2 bytes
t
cm
1
PLAY command
× (M1) + 2
2
nd
byte
ML2216/ML22P16
0
FEDL2216FULL-03
× (M0) + 1) × 4 ms
Playback
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