Board Description
4-12
AT91SAM9M10-G45-EK User Guide
6495B–ATARM–21-Apr-10
Figure 4-10.
USB Port
4.2.6.5
Ethernet 10/100 (EMAC) Port
The port is compatible with IEEE
®
Standard 802.3.
The SAM9M10-G45-EK is equipped with a Davicom DM9161AEP 10/100 Mbps Fast Ethernet Physical
Layer TX/FX Single Chip Transceiver. It contains the entire physical layer functions of 100BASE-TX as
defined by IEEE 802.3u, including the Physical Coding Sublayer (PCS), Physical Medium attachment
(PMA), Twisted Pair Physical Medium Dependent Sublayer (TP-PMD), 10BASE-TX Encoder/Decoder
(ENC/DEC), and Twisted Pair Media Access Unit (TPMAU).
The Ethernet interface integrates an RJ45 connector with an embedded transformer, and three status
LEDs.
The Ethernet interface provides two selectable modes, MII or RMII (Reduced MII), for 100Base-TX or
10Base-TX. The MII and RMII interfaces are capable of both 10Mb/s and 100Mb/s data rates as
described in the IEEE 802.3u standard. The signals used by MII and RMII interfaces are described in the
table below.
5V
3
V
3
PD2
PD4
PD1
HDMA
HDPA
PD
3
HDMB
HDPB
PD2
8
PB19
U
S
B HO
S
T/DEVICE INTERFACE
U
S
B HO
S
T INTERFACE
(ENA)
(ENB)
(FLGA)
(FLGB)
(VBU
S
)
(IDU
S
B)
C171
10p
C171
10p
R96
6
8
k
R96
6
8
k
R95
47k
R95
47k
+
C170
33u
+
C170
33u
C169
100n
C169
100n
J12
G
3
505-4NBT1
S
1W
J12
G
3
505-4NBT1
S
1W
1
4
5
2
3
6
SHIELD
J14
G
3
515-09010101-00
VBUS
DM
DP
ID
GND
U
S
B-A
J14
G
3
515-09010101-00
1
2
3
4
5
7
6
+
C16
8
33u
+
C16
8
33u
R97
47k
R97
47k
L14
220ohm
a
t 100MHz
L14
220ohm
a
t 100MHz
1
2
C167
100n
C167
100n
MN17
AIC1526-0G
S
MN17
AIC1526-0G
S
ENA
1
FLGA
2
ENB
4
OUTA
8
GNG
6
FLGB
3
IN
7
OUTB
5
L1
3
220ohm
a
t 100MHz
L1
3
220ohm
a
t 100MHz
1
2
C172
100n
C172
100n
