D12320VF25V Datasheet, PDF (795/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
Response H'06
• Response, H'06, (1 byte): Response to the clock mode selection command
ACK will be returned when the clock mode matches.
Error
H'91 ERROR
Response
• Error response, H'91, (1 byte): Error response to the clock mode selection command
• ERROR, (1 byte) : Error code
H'11: Checksum error
H'22: Clock mode error, that is, the clock mode does not match.
Even when the clock mode value is H'00 or H'01 for clock mode inquiry, clock mode selection
is performed for each value.
(5) Multiplication Ratio-Inquiry
The boot program will return the supported multiplication and division ratios.
Command H'22
• Command, H'22, (1 byte): Inquiry regarding multiplication ratio
Response H'32
Size
The
Num
ber of
Clock
The number of
Multiplica- ···
multiplication ratios tion ratio
···
SUM
• Response, H'32, (1 byte): Response to the multiplication ratio inquiry
• Size (1 byte): The amount of data that represents the clock sources, the number of
multiplication ratios, and the multiplication ratios
• A number of types (1 byte): The number of supported multiplied clock types
(e.g. when there are two multiplied clock types, which are the main and peripheral clocks, the
number of types will be H'02.)
• A number of multiplication ratios (1 byte): The number of multiplication ratios for each type
(e.g. the number of multiplication ratios to which the main clock can be set and the peripheral
clock can be set.)
• Multiplication ratio (1 byte)
⎯ Multiplication ratio: The value of the multiplication ratio (e.g. when the clock-frequency
multiplier is four, the value of multiplication ratio will be H'04.)
Rev.7.00 Feb. 14, 2007 page 761 of 1108
REJ09B0089-0700