Renesas Synergy™ Platform
Target Board Kit S1JA (TB-S1JA)
R12UM0025EU0101 Rev.1.01
Page 7 of 31
Apr.21.20
4. TB-S1JA Hardware Details
4.1 Jumpers and DIP Switch Settings
4.1.1 Copper Jumpers
Copper jumpers are of two types, designated
trace-cut
and
solder-bridge
.
A
trace-cut
jumper
is provided with a narrow copper trace connecting its pads. The silk screen overlay
printing around a trace-cut jumper is a solid box. To isolate the pads, cut the trace between pads adjacent to
each pad, then remove the connecting copper foil either mechanically or with the assistance of heat. Once
the etched copper trace is removed, the trace-cut jumper is turned into a solder-bridge jumper for any later
changes.
A
solder-bridge jumper
is provided with two isolated pads that may be joined together by one of three
methods:
•
Solder may be applied to both pads to develop a bulge on each and the bulges joined by touching a
soldering iron across the two pads.
•
A small wire may be placed across the two pads and soldered in place.
•
A SMT resistor, size 0805, 0603, or 0402, may be placed across the two pads and soldered in place. A
zero-ohm resistor shorts the pads together.
The silk screen overlay printing around a solder-bridge jumper is a box with a gap in the lines adjacent to the
isolation region between the pads.
For any copper jumper, the connection is considered
closed
if there is an electrical connection between the
pads (default for trace-cut jumpers.) The connection is considered
open
if there is no electrical connection
between the pads (default for the solder-bridge jumpers.)
Figure 3. Copper Jumpers
4.1.2 Default Board Configuration
The following table describes the default settings for each jumper on the TB-S1JA Target Board. This
includes traditional pin jumpers (J
x
designation) and copper jumpers (E
x
designation.)
The Circuit Group for each jumper is the designation found in the board schematic. Functional details for
many of the listed jumpers may be found in Section 4.4, Connectivity and Settings, and section 4.6,
Additional Features.
Table 1. Default Jumper Settings
Location
Circuit Group
Default
Open/Closed
Function
J8
MCU Mode Config
Shunt on pins 1-2 Sets the MCU Mode to boot from Internal Flash
E18
12M Crystal
Open
Connects P213/XTAL on MCU to J2-21
E19
Open
Connects P212/EXTAL on MCU to J2-19
E23
Closed
Connects 12.000 MHz Crystal to MCU
E24
Closed
Connects 12.000 MHz Crystal to MCU
E1
3.3V Linear Regulator
Closed
Alternate 3.3 V source (+3V3JLOB)
E22
32K Crystal
Open
Connects P215/XCIN on MCU to J2-25
E25
Closed
Connects 32.768 kHz Crystal to MCU
E26
Closed
Connects 32.768 kHz Crystal to MCU
E27
Open
Connects P214/XCOUT on MCU to J2-23
E10
AVCC0-> +3V3MCU
Closed
Co3V3MCU to AVCC0
E11
AVSS0->GND
Closed
Connects Ground to AVSS1