SH7280 Datasheet, PDF (1452/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 26 Flash Memory
(2) State transitions
State transitions that can follow booting-up in USB boot mode are shown in figure 26.10.
Initiation in boot mode
(reset in boot mode)
Reception ^{of H'55}
2.
Waiting for inquiry-setting
commands
Reception of inquiry command
Response to inquiry command
Erasure of
whole user mat
3.
Enumeration
1.
Execution of inquiry-setting
command processing
Reception of READ, CHECK, etc. commands
4.
Waiting for programming
and erasure commands
Response to command
Execution of READ, CHECK
command processing
(Programming
complete)
(Erasure complete)
(Reception of
erasure-selection command)
(Reception of programming-selection command)
(Reception of data to be programmed)
Erase-block contains data.
Waiting for data
to be programmed
Figure 26.10 USB Boot Mode
Rev. 1.00 Jun. 26, 2008 Page 1422 of 1692
REJ09B0393-0100