SH7280 Datasheet, PDF (1550/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 29 User Debugging Interface (H-UDI)
29.5 Usage Notes
1. An H-UDI command, once set, will not be modified as long as another command is not set
again from the H-UDI. If the same command is to be set continuously, the command must be
set after a command (BYPASS mode, etc.) that does not affect chip operations is once set.
2. In software standby mode, this LSI stops operation and does not accept any H-UDI command.
To retain the TAP status before and after software standby mode, keep TCK high before
entering software standby mode.
Rev. 1.00 Jun. 26, 2008 Page 1520 of 1692
REJ09B0393-0100