Switching between crystal oscillator/ceramic oscillator and built-in RC oscillator is set in the Speech LSI Utility used when creating voice code data. Please see "188.8.131.52.10. User setting Parameter Dialog (ML22(Q)53x/62x/66x)" in the Speech LSI Utility User's Manual. Please select “Source clock oscillation” here. Please select “X'tal” when using an external clock.
Version information can be added to the sound code data. Please refer to "4.2.11. User setting Parameter Dialog Box(ML22 (Q) 53x / 62x / 66x)" in the Speech LSI Utility User's Manual. 8-bit information can be added with "Speech ROM Information" in the upper left.
The added information can be read with the RDVER command.
The checksum cannot be confirmed on the Speech LSI Utility screen. It is described at the end of the information file (xxx.inf) generated when Create ROM is performed. The following is an example of the checksum at the end of the information file. In this case, the checksum is "6BF7H".
There are three ways to write to the built-in flash during mass production.
(1) Write and ship at Lapis factory (2) Write by the customer with a third-party flash writer (write using the flash memory interface) (3) Write using the clock synchronous serial interface of the MCU command interface
For details on the flash memory rewrite function, refer to "Function description" and "Flash memory rewrite function" in the data sheet.
For RIFF Wave files (* .wav), the bit precision corresponds to 16bit or 8bit. It does not support 24bit. Please refer to "2.3.1. Input Files" of the Speech LSI Utility User's Manual for the readable format.