3069RF-ZTAT Datasheet, PDF (667/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Reset
Bit-Rate-Adjustment
State
Inquiry/Selection
wait
Transition to
Programming/erasing
Inquiry
Selection
Operations for
Inquiry
Operations for
Selection
Operations for Erasing
User MATs and User
Boot MATs
Programming/erasing
selection wait
Programming
Operations for
Programming
Erasing
Operations for
Erasing
Checking
Operations for
Checking
Figure 18.23 Boot Program States
• Bit-Rate-Adjustment state
The bit rate is calculated by measuring the period of transfer of a low-level byte (H'00) from the
host. The bit rate can be changed by the command for a new bit rate selection. After the bit rate
has been adjusted, the boot program enters the inquiry and selection state. The bit-rate-adjustment
sequence is shown in figure 18.24.
Rev. 5.0, 09/04, page 645 of 978