Section 17 Flash Memory
Rev. 3.00 Sep. 27, 2007 Page 633 of 758
REJ09B0243-0300
(5) Inquiry on frequency multipliers
In response to the inquiry on frequency multipliers, the boot program returns information on the
settable frequency multipliers or divisors.
Command
H'22
Command H'22 (1 byte): Inquiry on frequency multipliers
Response H'32
Size
No. of frequency
types
No. of multipliers
Multiplier
…
…
SUM
Response H'32 (1 byte): Response to the inquiry on frequency multipliers
Size (1 byte): The total length of the number of frequency types, number of multipliers, and
multiplier fields.
Number of frequency types (1 byte): The number of operating clocks for which multipliers
can be selected
(for example, if frequency multiplier settings can be made for the frequencies of the main
and peripheral operating clocks, the value should be H'02).
Number of multipliers (1 byte): The number of multipliers selectable for the operating
frequency of the main or peripheral modules
Multiplier (1 byte):
Multiplier: Numerical value in the case of frequency multiplication (e.g. H'04 for
×
4)
Divisor: Two’s complement negative numerical value in the case of frequency division
(e.g. H'FE [-2] for
×
1/2)
As many multiplier fields are included as there are multipliers or divisors, and
combinations of the number of frequency types are repeated as many times as there are
operating clocks.
SUM (1 byte): Checksum
Summary of Contents for SH7124 R5F7124
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Page 36: ...Section 1 Overview Rev 3 00 Sep 27 2007 Page 16 of 758 REJ09B0243 0300 ...
Page 68: ...Section 2 CPU Rev 3 00 Sep 27 2007 Page 48 of 758 REJ09B0243 0300 ...
Page 108: ...Section 5 Exception Handling Rev 3 00 Sep 27 2007 Page 88 of 758 REJ09B0243 0300 ...
Page 166: ...Section 7 User Break Controller UBC Rev 3 00 Sep 27 2007 Page 146 of 758 REJ09B0243 0300 ...
Page 724: ...Section 20 List of Registers Rev 3 00 Sep 27 2007 Page 704 of 758 REJ09B0243 0300 ...
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