D12320VF25V Datasheet, PDF (792/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
Inquiry and Selection States
The boot program returns information from the flash memory in response to the host's inquiry
commands and sets the device code, clock mode, and bit rate in response to the host's selection
command.
Inquiry and selection commands are listed below.
Table 17.61 Inquiry and Selection Commands
Command
H'20
Command Name
Supported Device Inquiry
H'10
H'21
Device Selection
Clock Mode Inquiry
H'11
H'22
Clock Mode Selection
Multiplication Ratio Inquiry
H'23
H'24
H'25
H'26
H'27
H'3F
H'40
H'4F
Operating Clock Frequency
Inquiry
User Boot MAT Information
Inquiry
User MAT Information Inquiry
Block for Erasing Information
Inquiry
Programming Unit Inquiry
New Bit Rate Selection
Transition to
Programming/erasing State
Boot Program Status Inquiry
Description
Inquiry regarding device codes and product
names of F-ZTAT
Selection of device code
Inquiry regarding numbers of clock modes and
values of each mode
Indication of the selected clock mode
Inquiry regarding the number of frequency-
multiplied clock types, the number of
multiplication ratios, and the values of each
multiple
Inquiry regarding the maximum and minimum
values of the main clock and peripheral clocks
Inquiry regarding the number of user boot MATs
and the start and last addresses of each MAT
Inquiry regarding the a number of user MATs
and the start and last addresses of each MAT
Inquiry regarding the number of blocks and the
start and last addresses of each block
Inquiry regarding the unit of programming data
Selection of new bit rate
Erasing of user MAT and user boot MAT, and
entry to programming/erasing state
Inquiry into the operated status of the boot
program
The selection commands, which are device selection (H'10), clock mode selection (H'11), and new
bit rate selection (H'3F), should be sent from the host in that order. These commands will
certainly be needed. When two or more selection commands are sent at once, the last command
will be valid.
Rev.7.00 Feb. 14, 2007 page 758 of 1108
REJ09B0089-0700