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phyCORE-Z500P(T)
11.8 One-Wire Interface (X30)
The RJ11 connector X30 provides a connection to the phyCORE-Z500P(T) baseboard One-Wire
serial interface. This interface is realized by an serial to One-Wire converter DS2480B which is
connected to serial port 3 of the FTDI U14 which is connected at high-speed to USB port 7 of the
phyCORE-Z500P(T).
The One-Wire bus system was designed by Dallas Semiconductor and provides low-speed data,
signaling, and power over a single wire (a ground wire is also needed). One-Wire is similar in concept
to I²C, but with lower data rates and a much lower cost. It is typically used to communicate with small
inexpensive devices such as digital thermometers and weather instruments.
P
IN NUMBER
1
2
3
4
5
6
Table 14:
One-Wire connector
Note:
Many One-Wire devices operate within a voltage range of 2.8 V to 5.5 V. But there are also some
devices which only operate from 3 V to 3.7 V. Please refer to the datasheet of the One-Wire device
which should be used to avoid destruction.
58
S
F
IGNAL NAME
VCC5VA
Power supply for One-Wire
GND
1_WIRE_CON
GND
Not connected
Not connected
© PHYTEC Messtechnik GmbH 2009
UNCTION
Ground
Data
Ground
n/a
n/a
L-732e_0
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