CHAPTER 3 CAUTIONS ON DESIGNING TARGET SYSTEM
User’s Manual U16348EJ1V0UM
22
3.1
IE Connector (Target System Side)
The following shows the recommended circuit example of the target system required when connecting the IE-
70000-MC-NW-A and the pin assignment of the IE connector (on the target system side).
3.1.1 Recommended circuit example when NB85E Type.B core is used
Figure 3-1 shows the recommended circuit example of the IE connector (on the target system side).
Figure 3-1. Recommended Connection Circuit Example (NB85E Type.B)
A1
B13
A12
A13
B11
B12
B1-B10
A2
A3
A4
A5
A6
A8
A9
A7
A10
Note 1
Note 2
Note 2
Note 2
Note 3
A11
TRCCLK
V
DD
GND
TRCDATA0
TRCDATA1
TRCDATA2
TRCDATA3
TRCEND
DCK
DMS
DDI
DDO
DRST(-)
DCK
DMS
DDI
DDO
DBINT
DRST(-)
(Open)
(Open)
(Open)
(Open)
(Reserved)
(Reserved)
(Reserved)
(Reserved)
+3.3 V
External event
detection
device, etc.
50 k
Ω
4.7 k
Ω
+3.3 V
NB85E (Type.B)
IE connector
Note 4
(target system side)
22
Ω
Notes 1.
The clock pattern length must be as short as possible and shielded by GND. The pattern length
should be 100 mm or less.
2.
The pattern length must be as short as possible. The pattern length should be 100 mm or less.
3.
Recommended 3.3 V buffer products:
SN74LVC541A (manufactured by TI) or TC74LCX541F
(manufactured by Toshiba)
4.
Recommended products: 8830E-026-170S, 8830E-026-170L manufactured by KEL Corporation
Remarks 1
. V
DD
(pin B13) of the IE connector (on the target system side) is used to detect whether the
power of the target system is on.
2.
The DBINT pin is optional. It is not required to be prepared as an external pin unless a debug
interrupt has to be externally input.
