RX610 Group
26. ROM (Flash Memory for Code Storage)
R01UH0032EJ0120 Rev.1.20
Page 885 of 1006
Feb 20, 2013
(6) Operating Clock Frequency Inquiry
In response to an operating clock frequency inquiry command sent from the host, the RX610 returns the minimum and
maximum frequencies for each clock.
Command
23h
Response
33h
Size
Clock type
count
Minimum frequency
Maximum frequency
Minimum frequency
Maximum frequency
:
:
Minimum frequency
Maximum frequency
SUM
[Legend]
Size (1 byte):
Total number of bytes in the clock type count, minimum frequency, and maximum
frequency fields
Clock type count (1 byte): Number of clock types (for example, 02h indicates two clock types; that is, a system clock
and a peripheral clock)
Minimum frequency (2 bytes):
Minimum value of the operating frequency (for example, 07D0h indicates 20.00
MHz).
This value should be calculated by multiplying the frequency value (MHz) to two
decimal places by 100.
Maximum frequency (2 bytes):
Maximum value of the operating frequency represented in the same format as the
minimum frequency
SUM (1 byte):
Checksum