Hardware Manual WBD-111 Details
WILIGEAR Page 7
Jumpers
Jumpers J1 and J2 provide access to processor's GPIO pins, TTL level serial port and USB port.
Jumpers are positioned to allow easy connection and stacking of optional daughterboards. They
have pin #1 marked with a small copper square on a PCB.
J1 Pin Connection J2 Pin Connection
1 Ground 12 USB0_DM
2 GPIO0_10 UART_TX 11 USB0_DP
3 GPIO0_11 UART_DTR 10 Ground
4 GPIO0_4 9 +3.3V
5 SYS_RESET# 8 GPIO0_15 UART_RI
6 GPIO0_20 7 GPIO0_14 UART_CTS
7 +9-18V 6 GPIO0_13 UART_RTS
8 Ground 5 GPIO0_12 UART_DSR
9 +1.2V 4 GPIO0_9 UART_RX
10 NC 3 GPIO0_8 UART_DCD
11 +2.5V 2 GPIO0_7
12 NC 1 GPIO0_6
Table 1 – J1 connections, layout as on PCB Table 2 – J2 connections, layout as on PCB
Jumper J3 may be used to directly connect external LEDs and external reset button to device. All LED
outputs have 330 Ohm current limiting resistors. Power and multicolor LEDs are supplied with 3.3V
when turned on. LAN activity LED (pin #5) is wired differently and turned on by “low” signal. External
reset button should be connected to SOFT_RST and ground pins.
J3 Pin Connection J3 Pin Connection
1 +3.3V 2 Ground
3 +3.3V power LED 4 R LED4
5 LAN activity LED, pull-low control 6 G LED4
7 NC 8 R LED3
9 10 GPIO1_28 SOFT_RST
Figure 2 – J3 connections, layout as on PCB
Jumper J4 allows alternative access to serial console pins, reset signal and onboard power.
For serial console connection TTL level to RS-232 converter is required. Generic cell phone USB data
cable based on Prolific PL2303HX chip may be used. Parameters for WBD-111 serial console access
are:
19200/8-N-1.
Connect data cable's:
RX wire to UART_TX pin,
TX wire to UART_RX pin,
GND ground wire to Ground pin on WBD-111 device.
Disassembly of data cable connector may be required to find out the wiring. Wires are color coded
and TX, RX, GND marks should be printed on a cable's PCB. Generally RX signal wire is white, TX is
blue and GND is black. Generic data cable schematics show TX wire connected to pin #1 and RX
wire to pin #5 of Prolific PL2303HX chip.
4Gon
www.4Gon.co.uk
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