HD64F2168 Datasheet, PDF (716/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Response H'06
• Response, H'06, (1 byte): Response to the device selection command
ACK will be returned when the device code matches.
Error response H'90 ERROR
• Error response, H'90, (1 byte): Error response to the device selection command
ERROR : (1 byte): Error code
H'11: Sum check error
H'21: Device code error, that is, the device code does not match
(c) Clock Mode Inquiry
The boot program will return the supported clock modes in response to the clock mode inquiry.
Command H'21
• Command, H'21, (1 byte): Inquiry regarding clock mode
Response H'31 Size Number of modes Mode ···
SUM
• Response, H'31, (1 byte): Response to the clock-mode inquiry
• Size (1 byte): Amount of data that represents the number of modes and modes
• Number of clock modes (1 byte): The number of supported clock modes
H'00 indicates no clock mode or the device allows to read the clock mode.
• Mode (1 byte): Values of the supported clock modes (i.e. H'01 means clock mode 1.)
• SUM (1 byte): Checksum
(d) Clock Mode Selection
The boot program will set the specified clock mode. The program will return the selected clock-
mode information after this setting has been made.
The clock-mode selection command should be sent after the device-selection commands.
Command H'11 Size Mode SUM
• Command, H'11, (1 byte): Selection of clock mode
• Size (1 byte): Amount of data that represents the modes
• Mode (1 byte): A clock mode returned in reply to the supported clock mode inquiry.
• SUM (1 byte): Checksum
Response H'06
• Response, H'06, (1 byte): Response to the clock mode selection command
ACK will be returned when the clock mode matches.
Rev. 3.00, 03/04, page 676 of 830