wts701 Winbond Electronics Corp America, wts701 Datasheet - Page 42

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

WTS701
RESET
The WTS701 processor is initialized to the RESET state when Vcc is first applied to the part.
After a reset condition the device enters the POWER DOWN state. All configuration registers are
initialized to their default values after issuing the PWUP command.
Once the WTS701 is active and a hardware reset is applied on the RESET pin, the WTS701 will be in
IDLE state, and all configuration registers will return to their default values.
POWER DOWN
In this state, the power consumption of the WTS701 is minimal. All analog outputs are tristate, the
crystal interface is deactivated and the microcontroller is stopped. The only commands valid in the
Power Down mode are PWUP, SCLC and RDST. All configuration registers will return to their default
values after issuing the PWUP command.
IDLE
The idle state is first entered with the PWUP command. In this state, the micro-controller is running
and the device is ready to respond to further commands. From the IDLE state, the device can go to
the active CONVERT state or the POWER DOWN state.
CONVERT
This state is initiated by the CONV command. The text located in the internal buffer is converted into
speech and played back to the analog or digital interface according to the state of the configuration
registers. Once the active conversion has finished, the device enters the WAIT state.
WAIT
Once a conversion has finished, the device enters the WAIT state. In this state, audio outputs are still
active. To deactivate, audio outputs and return to the IDLE state an IDLE command is issued.
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