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SAMA5D3 Xplained [USER GUIDE]
Atmel-11269D-ATARM-SAMA5D3-Xplained-XPLD-User Guide_07-Sep-15
4.2.10 Ethernet 10/100 Port
The SAMA5D3 Xplained board features a MICREL PHY device (KSZ8081RNB) operating at 10/100 Mb/s. The
board supports RMII interface modes. The Ethernet interface consists of two pairs of low-voltage differential pair
signals designated from GRX± and GTX± plus control signals for link activity indicators. These signals are routed
to the 10/100 BaseT RJ45 connector (J13).
For monitoring and control purposes, a LED functionality is added on the RJ45 connectors to indicate activity, link,
and speed status information for the corresponding ports.
For more information about the Ethernet controller device, refer to the MICREL KSZ8081RNB controller
manufacturer's datasheet.
Figure 4-13.
RMII Ethernet Schematic
4.2.11 Indicators
Two LEDs are available on the SAMA5D3 Xplained board. Both can be software-controlled by the user.
The red LED indicates that power is applied to the board (by default). It can be controlled via software.
The blue LED is mainly controlled by one GPIO line.
Figure 4-14.
LED Indicators Schematic
ETH1_XO
ETH1_XI
ETH1_XO
ETH1_XI
ETH1_LED0
ETH1_LED0
TX+
TX+
TX-
RX+
RX-
RX-
RX+
TX-
ETH1_LED1
ETH1_LED1
VDDIOP1
VDDIOP0
VDDIOP0
E1_AVDDT
VDDIOP0
EARTH_ETH1
EARTH_ETH1
GND_ETH1
VDDIOP0
EARTH_ETH1
GND_ETH1
VDDIOP0
NRST [4,5,9,11]
ETH1_PC2 [7]
ETH1_PC3 [7]
ETH1_PC0 [7]
ETH1_PC5 [7]
ETH1_PC6 [7]
ETH1_PC7 [7]
ETH1_PC4 [7]
ETH1_PC8 [7]
ETH1_PC9 [7]
PB12 [7]
ETH1_PC1 [7]
10Base-T/100Base-TX
ACT
LINK
+
C148
10uF
+
C148
10uF
L19
180ohm at 100MHz
L19
180ohm at 100MHz
1
2
MN9
KSZ8081RNB
MN9
KSZ8081RNB
RXC/B-CAST_OFF
19
CRS/CONFIG1
29
COL/CONFIG0
28
TXD1
25
TXD0
24
TXEN
23
RXD3/PHYAD0
13
RXD2/PHYAD1
14
RXD1/PHYAD2
15
RXD0/DUPLEX
16
RXDV/CONFIG2
18
RXER/ISO
20
MDC
12
MDIO
11
INTRP/NAND
21
VDDA_3V3
3
VDDIO
17
RESET
32
TXP
7
TXM
6
RXP
5
RXM
4
VDD_1V2
2
GND
1
PADDLE
33
TXC
22
TXD2
26
TXD3
27
REXT
10
XO
8
XI
9
LED0/NWAYEN
30
LED1/SPEED
31
R1
16
10K
R1
16
10K
+
C146
10uF
+
C146
10uF
R1
20
10K
R1
20
10K
+
C144
10uF
+
C144
10uF
C139
100nF
C139
100nF
R114
10K
R114
10K
R115
10K
R115
10K
C147
20pF
C147
20pF
C140
100nF
C140
100nF
C141
2.2uF
C141
2.2uF
R79
470R
R79
470R
Y4
25MHz
Y4
25MHz
1
2
3
4
C142
100nF
C142
100nF
R80
470R
R80
470R
C149
20pF
C149
20pF
R76
6.49k/1%
R76
6.49k/1%
C143
100nF
C143
100nF
R75
1K
R75
1K
C145
100nF
C145
100nF
R74
1K
R74
1K
R113
10K
R113
10K
R81
0R
R81
0R
R78
10K
R78
10K
L20
180ohm at 100MHz
L20
180ohm at 100MHz
1
2
R77
10K
R77
10K
R1
17
10K
R1
17
10K
R1
18
10K
R1
18
10K
1
2
3
6
4
5
7
8
75
75
75
75
1nF
TD+
TD-
CT
NC
RD-
CT
TX+
TX-
RX+
RX-
RD+
Left Green LED
Right yellow LED
J13
13F-64GYD2PL2NL
1
2
3
6
4
5
7
8
75
75
75
75
1nF
TD+
TD-
CT
NC
RD-
CT
TX+
TX-
RX+
RX-
RD+
Left Green LED
Right yellow LED
J13
13F-64GYD2PL2NL
1
2
7
8
3
6
5
4
9
10
11
12
13
14
15
16
R1
19
10K
R1
19
10K
PE23
PE24
3V3
PE[0..31]
[4,7,8,11]
LED
D3
RED
D3
RED
R34
470R
R34
470R
R33
100K 1%
R33
100K 1%
Q2
IRLML2502
Q2
IRLML2502
1
3
2
R32
470R
R32
470R
D2
BLUE
D2
BLUE
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