E702289_SH7290 Datasheet, PDF (211/252 Pages) Renesas Technology Corp – SH7290 E10A Emulator

Notes: 1. Handling of the TCK, TMS, TDI, /TRST, /ASEBRKAK, ASEMD0, and /CA pins
depends on the use conditions of the Hitachi-UDI as follows:
(a) When the user system is used by connecting the emulator, the ASEMD0 pin
must be grounded. The /CA pin must be pulled up by a resistance of several
kilo-ohms. The TCK, TMS, TDI, /TRST, and /ASEBRKAK pins must be
pulled up by a resistance of several kilo-ohms to protect the devices.
(b) When the emulator is used and the user system is independently used,
the ASEMD0 pin should be switched on the board as the method of handling
this pin depends on whether the emulator is used or not. The /CA pin must be
pulled up by a resistance of several kilo-ohms. The TCK, TMS, TDI, and
/ASEBRKAK pins must be pulled up by a resistance of several kilo-ohms to
protect the devices. The /TRST pin must be pulled down by a resistance of
several kilo-ohms and controlled individually.
(c) When the user system is independently used without using the emulator and
Hitachi-UDI, the ASEMD0 and /CA pins must be pulled up by a
resistance of several kilo-ohms. It is recommended to pull up the
/ASEBRKAK pins by a resistance of several kilo-ohms.The /TRST pin must
be low for a certain period when the emulator is turned on whether the
H-UDI is used or not. Thus it is recommended to pull up by a resistance of
several kilo-ohms or ground the /TRST pin. It is recommended to pull up the
TCK, TMS, and TDI pins by a resistance of several kilo-ohms.
2. The /RESET signal in the user side is input to the /RESETP pin of the SH7290.
Connect this pin to the Hitachi-UDI port connector as the output from the user
system.
3. When the U standby function is not used, do not connect the /CA pin to the
Hitachi-UDI port connector.
4. To use the emulator, pull up the /CA pin by a resistance of several kilo-ohms,
whether the U standby function is used or not.
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