r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 983

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

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In response to the inquiry on frequency multipliers, the boot program returns information on the
settable frequency multipliers or divisors.
Command
Response
 Command H'22 (1 byte): Inquiry on frequency multipliers
 Response H'32 (1 byte): Response to the inquiry on frequency multipliers
 Size (1 byte): The total length of the number of operating clocks, number of multipliers,
 Number of operating clocks (1 byte): The number of operating clocks for which multipliers
 Number of multipliers (1 byte): The number of multipliers selectable for the operating
 Multiplier (1 byte):
 SUM (1 byte): Checksum
Inquiry on frequency multipliers
and multiplier fields.
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).
frequency of the main or peripheral modules
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 multipliers and multiplier fields are repeated as many times
as there are operating clocks.
H'22
H'32
No. of multipliers
…
SUM
Size
Multiplier
No. of operating
clocks
…
Rev. 1.00 Sep. 21, 2007 Page 957 of 1124
Section 22 Flash Memory
REJ09B0402-0100