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Description of the Command Codes
3-30
5) The MSP53C691 stops speaking the phrase and pulls OUTRDY low to
send a nibble back to the master. The master must read the nibble from
the MSP53C691.
6) The MSP53C691 pulls OUTRDY low three more times sending a total of
four nibbles (0, 0, 5, and 5), indicating the successful stop of the speaking
of the phrase and the command.
7) The MSP53C691 then pulls INRDY low and waits for another command
from the master.
The sequence of events for stopping speaking CELP/MELP or FM while
playing mixed mode is as follows:
1) The MSP53C691 pulls INRDY low while speaking a phrase requesting a
command or speech or FM data.
2) The master sends a command header 0x5 to the MSP53C691. The
DATA/COMMAND line is pulled low while sending the header to indicate
a command.
DATA LINES
DATA4
DATA3
DATA2
DATA1
DATA0
0
0
1
0
1
Command header set
3) The MSP53C691 pulls INRDY low again requesting the level 1 command.
4) The master sends the level 1 command 0x2 to the MSP53C691 if it is
ready to stop speaking CELP/MELP but must continue playing FM.
DATA LINES
DATA4
DATA3
DATA2
DATA1
DATA0
0
0
0
1
0
Level 1 command sent
The master sends the level 1 command 0x3 to the MSP53C691 if it is ready
to stop playing FM but must continue speaking CELP/MELP.
DATA LINES
DATA4
DATA3
DATA2
DATA1
DATA0
0
0
0
1
1
Level 1 command sent
5) The MSP53C691 stops speaking the phrase or FM and pulls OUTRDY
low to send a nibble back to the master. The master must read the nibble
from the MSP53C691.
Summary of Contents for MSP53C691
Page 1: ...MSP53C691 Speech Synthesizer December 2000 MSDS Speech User s Guide SPSU020 ...
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