Renesas M32R/ECU Series User Manual page 826

Appendix 4
M32R/ECU
(Note 1) RESET#
TRSYNC
TRDATA0–TRDATA7
EVENT0, EVENT1
SDIVCC
User board
Note 1: The RESET# related circuit and resistance-capacitance values must be determined
depending on the user board's system design conditions and the microcomputer's operating conditions.
Note 2: N-channel open-drain output is recommended for the RESET output of JTAG tools. For details, see JTAG tool specifications.
Notes: • Only if the JTRST pin is firmly tied to ground, the JTDO, JTDI, JTMS and JTCLK pins can be processed by either pullup or pulldown.
• Each of these pins must always be processed even when not using JTAG tools.
The same pullup/pulldown resistance values as when using JTAG tools may be used.
Figure 4.12.2 Notes on Board Design when Connecting JTAG Tools (for 255FBGA)
VCCE(5V)
10KΩ
33Ω
10KΩ
33Ω
JTDO
10KΩ
33Ω
JTDI
10KΩ
33Ω
JTMS
10KΩ
33Ω
JTCK
33Ω
JTRST
2KΩ
10KΩ
33Ω
DBI
33Ω
TRCLK
33Ω
33Ω
33Ω
0.1µF
VSS
Make sure wiring lengths are the same, and avoid bending wires as much as possible.
Be careful not to use through-holes within the wiring.
Appendix 4-21
SUMMARY OF PRECAUTIONS
Appendix 4.12 Precautions about JTAG
SDI connector (JTAG connector)
Power
RESET
TDO
TDI
TMS
TCK
TRST
GND
DBI
TRCLK
TRSYNC
TRDATA[0:7]
8
EVENT[0:1]
2
SDI trace
power supply
GND
When JTAG tools
connected
(Note 2)
When emulator connected
32180 Group User's Manual (Rev. 1.0)