HD6417706 Datasheet, PDF (575/709 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

Data loaded into the output pin boundary scan register in the Capture-DR state is not used for
external circuit testing (it is replaced by a shift operation).
The instruction code is 0000.
21.5.2 Notes for Boundary Scan
1. Boundary scan mode does not cover clock-related signals (EXTAL, EXTAL2, XTAL,
XTAL2, CKIO).
2. Boundary scan mode does not cover reset-related signals (RESETP, RESETM, CA).
3. Boundary scan mode does not cover H-UDI-related signals (TCK, TDI, TDO, TMS, TRST).
4. When a boundary scan test is carried out, ensure that the CKIO clock operates constantly.
The CKIO frequency range is as follows:
Minimum: 1 MHz
Maximum: Maximum frequency for respective clock mode specified in the CPG section
Set pins MD[2:0] to the clock mode to be used.
After powering on, wait for the CKIO clock to stabilize before performing a boundary scan
test.
5. Fix the RESETP pin low.
6. Fix the CA pin high, and the ASEMD0 pin low.
21.6 Usage Note
1. An H-UDI command other than an H-UDI interrupt, once set, will not be modified as long as
another command is not re-issued from the H-UDI. An H-UDI interrupt command, however,
will be changed to a bypass command once set.
2. Because chip operations are suspended in standby mode, H-UDI commands are not accepted.
However, the TAP controller remains in operation at this time.
3. The H-UDI is used for emulator connection. Therefore, H-UDI functions cannot be used when
using an emulator.
21.7 Advanced User Debugger (AUD)
The AUD is a function exclusively for use by an emulator. Refer to the User's Manual for the
relevant emulator for details of the AUD.
Rev. 4.00, 03/04, page 529 of 660