h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 473

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

(b) Device Selection
The boot program will set the supported device to the specified device code. The program will
return the selected device code in response to the inquiry after this setting has been made.
• Command, H'10, (one byte): Device selection
• Size (one byte): Amount of device-code data
• Device code (four bytes): Device code (ASCII code) returned in response to the supported
• SUM (one byte): Checksum
• Response, H'06, (one byte): Response to the device selection command
• Error response, H'90, (one byte): Error response to the device selection command
(c) Clock Mode Inquiry
The boot program will return the supported clock modes in response to the clock mode inquiry.
• Command, H'21, (one byte): Inquiry regarding clock mode
• Response, H'31, (one byte): Response to the clock-mode inquiry
• Size (one byte): Amount of data that represents the number of modes and modes
• Number of clock modes (one byte): The number of supported clock modes
• Mode (one byte): Values of the supported clock modes (i.e. H'01 means clock mode 1.)
• SUM (one byte): Checksum
Command
Response
Error response
Command
Response
This is fixed at 2
device inquiry
ACK will be returned when the device code matches.
ERROR
H'00 indicates no clock mode or the device allows to read the clock mode.
H'10
H'06
H'21
H'31
: (one byte): Error code
H'11: Sum check error
H'21: Device code error, that is, the device code does not match
H'90
Size
Size
ERROR
Number of modes
Device code
Mode
SUM
Rev. 2.00, 03/04, page 441 of 534
···
SUM