Atmel Evaluation Kit for the SAM4E Series of Flash Microcontrollers ATSAM4E-EK ATSAM4E-EK Data Sheet
Product codes
ATSAM4E-EK
SAM4E-EK User Guide
42067A
−SAM4E−01/2013
13
4.3.8 RS485
As noticed above the USART1 is shared with the RS485 port, connected to the transceiver MN6 and output to the 3-
point connector J6. The design includes selectable jumpers for RS485 bus termination resistors selection (JP10, JP12,
and JP13).
point connector J6. The design includes selectable jumpers for RS485 bus termination resistors selection (JP10, JP12,
and JP13).
Figure 4-7. RS485.
PA25
JP13
R52
DNP
PA21_485
JP10
R50
0R
R48
0R
R51
120R
J6
1
2
3
R47
0R
R45
DNP
R46
10K
C52
100nF
100nF
R49
0R
MN6
ADM3485ARZ
ADM3485ARZ
RO
1
RE
2
DE
3
DI
4
VCC
8
GND
5
A
6
B
7
+3V3
+3V3
+3V3
FGND
JP12
TXD1
RXD1
CTS1
RTS1
PA22
RS 485
PA24
4.3.9 Ethernet MAC 10/100 (EMAC)
The EMAC module implements a 10/100 Ethernet MAC compatible with the IEEE
®
802.3 standard using an address
checker, statistics and control registers, receive and transmit blocks, and a DMA interface.
The Atmel SAM4E-EK is equipped with a MICREL KSZ8051MNL 10/100 Mbps Fast Ethernet Physical Layer
transceiver. It contains the entire physical layer functions of 100BASE-TX as defined by IEEE 802.3u.
transceiver. It contains the entire physical layer functions of 100BASE-TX as defined by IEEE 802.3u.
The Ethernet interface provides MII for 100Base-TX or 10Base-TX. The MII interfaces are capable of both 10Mb/s and
100Mb/s data rates as described in the IEEE 802.3u standard. The Ethernet interface integrates an RJ45 connector
with an embedded transformer, and two status LEDs.
100Mb/s data rates as described in the IEEE 802.3u standard. The Ethernet interface integrates an RJ45 connector
with an embedded transformer, and two status LEDs.
Figure 4-8. Ethernet block.
FGND
ETH1_XI
ETH1_XO
Y4
25MHz
25MHz
1
2
3
4
C79
100nF
R108
4.7K
R107
4.7K
+3V3
+3V3
R111
0R
C86
22pF
R109
470R
R112
0R
C76
100nF
100nF
R110
470R
GND_ETH
RXDV
RJ45 ETHERNET CONNECTOR
C77
2.2uF
At the De-Assertion of Reset:
PHY ADD[2:0]:001
CONFIG[2:0]:000,Mode:MII
Duplex Mode:Half Duplex
Isolate Mode:Disable
Speed Mode:100Mbps
Nw ay Auto-Negotiation:Enable
PHY ADD[2:0]:001
CONFIG[2:0]:000,Mode:MII
Duplex Mode:Half Duplex
Isolate Mode:Disable
Speed Mode:100Mbps
Nw ay Auto-Negotiation:Enable
ETH PHY
C82
100nF
C85
22pF
GND_ETH
R85
22R
R104
22R
GND_ETH
R105
22R
R86
22R
R87
22R
R88
22R
R89
22R
R90
22R
R91
22R
R92
22R
R93
22R
R94
22R
R96
22R
R98
22R
COL
E1_RXCK
RXER
E1_CRS
TXD3
R84
22R
C78
100nF
100nF
TXD2
1
2
3
6
4
5
7
8
75
75
75
75
1nF
TD+
TD-
CT
NC
RD-
CT
TX+
TX-
RX+
RX-
RD+
J20
J00-0061
1
2
7
8
3
6
5
4
13 14
9
10
11
12
RXC
TXD0
TXD1
E1_COL
PD3
PD14
PD7
PD2
RXD0
PD12
RXD3
PD[0..31]
PD11
FGND
ETH1_XO
R99
22R
RXM
RXP
TXP
+3V3
TXM
CT_TX
CT_RX
L5
220ohm at 100MHz
1
2
RXD2
NRST
C81
10uF
10uF
C83
10uF
10uF
+3V3
TXC
ETH1_XI
R100
22R
MN9
KSZ8051MNL
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
RR4
4.7k
1 2 3 4
5
6
7
8
PD16
PD4
PD15
E1_TXCK
TXEN
PD1
PD28
PD9
PD5
PD6
PD8
E1_RXDV
PD0
E1_TX0
E1_RX1
E1_RX0
E1_MDC
E1_MDIO
E1_TXEN
INT_ETH1
E1_RXER
+3V3
RR3
4.7k
1 2 3 4
5
6
7
8
E1_TX1
C84
100nF
E1_TX2
FGND
PD10
E1_TX3
E1_RX2
E1_RX3
PD13
RXD1
CRS
R103
22R
E1_AVDDT
R106
6.49K
R102
4.7K
R101
4.7K