Atmel Ethernet1 Xplained Pro [USER GUIDE]
Atmel-42226A-Atmel-Ethernet1-Xplained-Pro-UserGuide_092014
Ethernet1 Xplained Pro Hardware Overview
Headers and Connectors
Ethernet1 Xplained Pro Extension Header
Ethernet1 Xplained Pro implements one Xplained Pro Standard Extension Header marked with EXT in
silkscreen. This header makes it possible to connect the board to any Xplained Pro MCU board. The pin-out
definition for the extension header can be seen in Table 1-3 Ethernet1 Xplained Pro Specific Extension Header.
Table 1-3. Ethernet1 Xplained Pro Specific Extension Header
Pin numbers Name Description
1 ID Communication line to the ID chip.
2 GND Ground.
3 NC
4 NC
5 PME Power Management Event, active low.
6 nRST Reset line for Ethernet, active low.
7
NC
8 NC
9 INTRN Interrupt request from Ethernet, active low.
10 NC
11 NC
12 NC
13 NC
14 NC
15 SPI_SS_A Ethernet chip select signal, connected to CSN pin of Ethernet chip.
16 SPI_MOSI Master out slave in line of Ethernet, connected to SI pin of Ethernet chip.
17 SPI_MISO Master in slave out line of Ethernet, connected to SO pin of Ethernet chip.
18 SPI_SCK Clock line of Ethernet, connected to SCLK pin of Ethernet chip.
19 GND Ground.
20 VCC Target supply voltage.
Peripherals
Ethernet Controller
Ethernet1 Xplained Pro features a single-port Ethernet controller which consists of a 10/100 physical layer
transceiver (PHY), a MAC, and a Serial Peripheral Interface (SPI). The part number of the Ethernet controller is
KSZ8851SNL from Micrel, INC. The connections to Ethernet are shown in Table 1-4 Ethernet Controller
Connections.
