Target Board Kit S3A1 (TB-S3A1)
Hardware Layout
R12UM0022EU0100 Rev.1.00
Page 13 of 36
Feb 6, 2018
Table 2 Device USB connector (J9)
USB device connector
TB-S3A1
Pin
Description
Signal/Bus
1
+5VDC, connected to a sense voltage 2/3 divider
to allow Main MCU sensing of Host presence
+5VUSB
P407/USB_VBUS = 2/3(5VUSB)
2
Data-
P915/USB_DM
3
Data+
P914/USB_DP
4
USB ID, jack internal switch, cable inserted
N.C.
5
Ground
GND
Connections in Table 2 are based on the condition of copper jumpers E16, E17, E20, E21, and
E30 matching their as-manufactured status. As-manufactured, E16 and E17 are closed, E20
and E21 are open, and E30 is closed.
Alternatively, the Device USB signals to the Main MCU may be connected to MCU Pin
Header J1. To enable this configuration, copper jumpers E16 and E17 should be open, E20
and E21 should be closed.
4.4.2
Debug USB
The DEBUG USB Micro-B connection jack connects the S124 J-Link MCU
to an external USB Host, FS capable, allowing re-programming and
debugging of the Main MCU firmware. Power for the Target Board may be
received from this connector.
The J-Link OB interface is multiplexed with the JTAG interface, and can collectively be referred to as the Programming
Interface. While the J-Link OB interface and the JTAG interface do not conflict, the J-Link OB signals may be isolated
from the programming interface by changing the associated copper jumpers.
J-Link Disconnect Copper Jumpers E32, E33, E34, E37, and E38 connect the J-Link signals
to the MCU programming interface. To isolate the J-Link signals from the JTAG interface,
the copper jumpers must be open. To allow use of the J-Link interface, each copper jumper
must be closed.
J-Link MCU Power Copper Jumper, E1, connects the main +3.3V power to the J-Link +3.3V
power. The default condition for E1 is closed, which connects the J-Link MCU power to the
main +3.3V power. If J-Link signals are disconnected, the power to the J-Link MCU should
also be removed by changing E1 to open.
Table 3 DEBUG USB connector (J11)
DEBUG USB Connector
TB-S3A1
Pin
Description
Signal/Bus
1
+5VDC
+5V_JUSB
2
Data-
U2 USB_DM (U2-18)
3
Data+
U2 USB_DP (U2-19)
4
USB ID, jack internal switch, cable
inserted
N.C.
5
Ground
GND
Three of the J-Link ports (P108, P109, and P300) conflict with the SPI interface, as shown in the following table.
Summary of Contents for S3A1
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Page 44: ...Renesas Synergy Platform Target Board Kit S3A1 TB S3A1 R12UM0022EU0100 ...
