SH7055S Datasheet, PDF (865/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Command H'52 Size Area Read address
Read size
SUM
 Command: H'52 (one byte): Memory read
 Size (one byte): Amount of data that represents the area, read address, and read size (fixed
at 9)
 Area (one byte)
H'00: User boot MAT
H'01: User MAT
An address error occurs when the area setting is incorrect.
 Read start address (four bytes): Start address to be read from
 Read size (four bytes): Size of data to be read
 SUM (one byte): Checksum
Response H'52 Read size
Data ...
SUM
 Response: H'52 (one byte): Response to memory read
 Read size (four bytes): Size of data to be read
 Data (n bytes): Data for the read size from the read address
 SUM (one byte): Checksum
Error response H'D2 ERROR
 Error response: H'D2 (one byte): Error response to memory read
 ERROR: (one byte): Error code
H'11: Sum check error
H'2A: Address error
The start address for reading is not in the MAT.
H'2B: Size error
The read size exceeds the MAT, the last address for reading calculated from the start
address for reading and the read size is not in the MAT, or read size is 0.
(4) User boot MAT sum check
The boot program will add the amount of data in user boot MATs and return the result.
Command H'4A
 Command: H'4A (one byte): Sum check of user boot MATs
Response H'5A Size MAT checksum
SUM
 Response: H'5A (one byte): Response to sum check of user boot MATs
 Size (one byte): Number of characters in checksum data (fixed at 4)
 MAT checksum (four bytes): Checksum of user boot MATs
The total amount of data is obtained in byte units.
 SUM (one byte): Checksum (for transmit data)
Rev.2.0, 07/03, page 827 of 960