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4 Connections
4.1 Connecting the Target System
4.1.1 Target Interface Connector
The 4-pin target interface connector (black) on the S5U1C17001H is used to input/output the debug signals from/to
the S1C processor on the target system. Use the target interface cable attached to the S5U1C17001H to connect
between this connector and the target system. This connection is always required to perform debugging. The pin
assignment of the 4-pin connector (black) on the S5U1C17001H is shown in the table below. For the debug pin
numbers on the S1C processor, refer to the technical manual of each model.
Table 4.1.1.1 Pin Assignment of the Target Interface Connector (Black)
4
3
2
1
• • • •
Target system
S1C processor Within 5 cm
DST2
DSIO
GND
DCLK
Place a 33 Ω resistor in series at a location
as close to the S1C processor as possible.
Notes: • Set the interface level (3.3V/1.8V/target input) using the DIP switches SW4 and SW5, and select
the CPU Core using the SW1 according to the target system before connecting the target system.
• The signals connected to the S5U1C17001H are very high-speed signals, so the connector on
the target system must be mounted within 5cm from the S1C processor. If there is more distance
between the connector and the S1C processor, the S5U1C17001H may not work properly.
• When wiring the S1C processor to the target connector for connecting the S5U1C17001H,
insert a 33W resistor in series between the S1C processor DSIO pin and the connector. This
resistor must be placed as close to the S1C processor as possible. Although the system
can operate without this 33W resistor, we recommend inserting this resistor to prevent
malfunctions. The other pins are connected directly. A low-level input to the DSIO pin issues
a forced break to set the S1C processor into debug mode. Although this signal is pulled up
through about 100kW internally, when not debugging, we recommend either removing the 33W
resistor to reduce noise and other problems or pulling this line up to the V
• Be sure to use the supplied 4-pin cable for connecting the target system to the S5U1C17001H.
Using another cable may cause a malfunction. If another cable must be necessarily used, do
not extend the target interface cable and connect the cable directly to the S5U1C17001H so
that the distance to the S1C processor on the target system will be shortest.
• The 4-pin connector does not have a projection for preventing reverse insertion. Check the
cable color (blue) of pin 1 to be sure the insertion of connector is proper when connecting it to
the target system.
S5U1C17001H USER MANUAL
(ICDMINI VER1.0 and VER1.1)
No.
Pin name
I/O
1
DCLK
I
2
GND
–
3
DSIO
I/O
4
DST2
I
4
3
2
1
Figure 4.1.1.1 Connecting the Target System
Seiko Epson Corporation
Pin function
Clock signal input pin for debugging
Power supply GND pin
Serial transfer I/O pin for debugging
Debug status signal input pin
Target interface cable
4
4
3
3
2
2
1
1
Blue
White
Target interface connector
4 Connections
S5U1C17001H
4
3
2
1
level.
DD
9
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