Netzer pin map

Pins of pin header JP1

Name Description
INT GPIO pins
CLK
MI
MO
CS
IO4
IO5
IO3
VA2 Connection for Power-over-Ethernet. That is the center tap of the Ethernet coil between RJ45 pins 3 and 6.
VB2 Connection for Power-over-Ethernet. This pin is directly connected to the network jack of Netzer (RJ45 pins 7 and 8).

Pins of pin header JP2

Name Description
RST Use this pin to reset Netzer. The signal is low active (this means 0 resets Netzer). The Reset signal can also be used for waking up Netzer from sleep mode (after shut down). The pin is optional and can be left open.
3V3 Pin for power supply. Minimum voltage is 3.1 V. Maximum voltage is 3.6 V.
GND Ground potential.
IO0 GPIO pins
IO1
IO2
TX
RX
VA1 Connection for Power-over-Ethernet. That is the center tap of the ethernet coil between RJ45 pins 1 and 2.
VB1 Connection for Power-over-Ethernet. This pin is directly connected to the network jack of Netzer (RJ45 pins 4 and 5).

Power-over-Ethernet (PoE)

The four connections VA1, VA2, VB1 and VB2 are connections from the network socket where a Power-over-Ethernet supply can be connected to.

PoE example circuit

The image shows an example circuit. Here the PoE supply AG9033 of Silver Telecom is used.

Overview over all GPIO signals

Here only some common informations are shown. The implemented functionality of a single IO depends on the single project.

Netzer Name ID PIC Pin Maximum output current Maximum input voltage Functionality
SPI_INT j RC2 25 mA 5,5 V Interrupt pin of the SPI slave module, PWM capable
SPI_CLK k RC3 25 mA 5,5 V Clock line of the SPI module or I2C module
SPI_MI l RC4 25 mA 5,5 V Data input of the SPI module, data line of the I2C module
SPI_MO m RC5 25 mA 5,5 V Data output of the SPI module
SPI_CS i RF7 2 mA 5,5 V Select input of the SPI slave module
RX h RC7 25 mA 5,5 V UART Receive line
TX g RC6 25 mA 5,5 V UART Send line
IO0 a RB0 25 mA 5,5 V Interrupt capable input
IO1 b RB1 25 mA 5,5 V Interrupt capable input
IO2 c RB2 25 mA 5,5 V Interrupt capable input
IO3 d RD1 8 mA 5,5 V PWM capable
IO4 e RA2 2 mA 3,3 V ADC capable
IO5 f RA3 2 mA 3,3 V ADC capable

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