wts701 Winbond Electronics Corp America, wts701 Datasheet - Page 44

• Manufacturer Part Number: wts701
• Description: Winbond Single-chip Text-to-speech Processor
• Manufacturer: Winbond Electronics Corp America

The user has the choice of enabling interrupts to signal the host when there is free space in the
internal buffer. When all text data has been sent, the user must indicate this by:
When conversion has been terminated using either of these commands, another CONV command
cannot be sent until conversion is completed and the chip enters the WAIT state.
Notes
Once the WTS701 has synthesized the contents of the text buffer, it will enter the WAIT state. In this
state the audio interface is still active. To disable the audio interface and return to the IDLE state an
IDLE command is sent. The WAIT state can be detected either through polling of the CNVT bit or
enabling of the ICNV interrupt. An example of the flow for a conversion is shown in
flow here assumes that the COM register is set such that the WTS701 generates an IBUF interrupt at
the 75 percent buffer level (64 free bytes) and that the ICNV interrupt is enabled.
1. Sending a FIN (Finish) command
2. Sending an EOT (ASCII 0x1A) character as the last byte of a CONV command
1. Buffer length limit:
2. Undefined characters:
(MANDARIN UNICODE/Big5 0x00 0x1A)
The max. character length of a white-space-bounded string is 53. The exceeding characters
will be truncated.
All the undefined characters will be deleted (prior to the word pronounciation process). The
defined characters range from ‘0x00’ to 0x7A’ excluding ‘0x22’, ‘0x3C’, ‘0x3E’ and ‘0x60’.
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Figure
WTS701
11. The