...........continued
Pin No
Mnemonic
PIO
Signal Description
11
WP
PA12
Write Protect
12
SHIELD
–
GROUND
3.4.6
Communication Interfaces
This section describes the signals and connectors related to the ETH and USB communication interfaces.
3.4.6.1
Ethernet 10/100 (GMAC) Port
The on-board ATSAMA5D27-WLSOM1 module integrates a 10/100 Mbps Ethernet Phy (KSZ8081RNA) allowing
direct connection to any 10/100 Mbps Ethernet-based Local Area Network, for full interaction with local servers and
wide area networks such as the Internet.
ETH signals from the WLSOM1 are connected to a RJ45 MagJack. Additionally, for monitoring and control purposes,
a LED functionality is carried on the RJ45 connector to indicate link status.
Figure 3-12. Ethernet 10/100 Interface Schematic
470R
0402
5%
R67
EARTH_ETH
GND_ETH
VDD_3V3
EARTH_ETH
EARTH_ETH
ETH_TX_P
ETH_TX_N
ETH_RX_P
ETH_RX_N
i
ETHERNET
ETH_LED0
GND
GND_ETH
0R
0402
R69
0.1uF
10V
0402
C2
0.1uF
10V
0402
C1
120R
BLM18PG121SN1D
FB5
DIFF100
DIFF100
DIFF100
DIFF100
TD+
TD-
RD-
RD+
TCT
RCT
1nF
75R
75R
75R
75R
TX+
TX-
RX+
RX-
Green
Yellow
1
2
3
4
5
6
7
8
Right
Lift
3
1
2
5
6
4
10
9
8
SH
D
11
12
JD2-0010NL
J6
CON RJ-45 JD2-0010NL
100Ω ±5Ω differential trace impedance
Routing top or bottom
ATSAMA5D27-WLSOM1-EK1
Baseboard Components
©
2019 Microchip Technology Inc.
User Guide
DS50002931A-page 15
