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21.4
Usage Notes
1. SDIR Command
Once an SDIR command has been set, it remains unchanged until initialization by asserting
7567 or placing the TAP in the Test-Logic-Reset state, or until another command (other than
an H-UDI interrupt command) is written from the H-UDI.
2. SDIR Commands in Sleep Mode
Sleep mode is cleared by an H-UDI interrupt or H-UDI reset, and these exception requests are
accepted in this mode. In standby mode, neither an H-UDI interrupt nor an H-UDI reset is
accepted.
3. The H-UDI is used for emulator connection. Therefore, H-UDI functions cannot be used when
an emulator is used.
4. The SH7750 Series' H-UDI pins must not be connected to a boundary-scan signal loop on the
board.
Rev. 4.0, 04/00, page 711 of 850
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