SH7211 Datasheet, PDF (1042/1228 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family

Section 24 User Debugging Interface (H-UDI)
24.5 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 and H-UDI module standby state, all of the functions in the H-UDI
cannot be used. To retain the TAP status before and after standby mode, keep TCK high before
entering standby mode.
Rev. 2.00 May. 08, 2008 Page 1018 of 1200
REJ09B0344-0200