This user guide introduces the Atmel® SAMA5D2 Xplained Ultra evaluation kit
(SAMA5D2-XULT) and describes the development and debugging capabilities for
applications running on the Atmel | SMART SAMA5D2 ARM
®
Cortex®-A5-based
embedded microprocessor unit (eMPU).
Scope
This guide provides details on the SAMA5D2-XULT. It is made up of five main
sections:
Section 1. describes the evaluation kit content and its main features.
Section 2. provides instructions to power up the SAMA5D2-XULT board.
Section 3. provides information on obtaining sample code and technical
support.
Section 4. provides an overview of the SAMA5D2-XULT board.
Section 5. describes the SAMA5D2-XULT board components.
Relative Humidity0 to 90% (non-condensing)
Dimensions: Main board135 × 88 × 20 mm
RoHS statusCompliant
Board IdentificationSAMA5D2 XPLAINED ULTRA
1.1Electrostatic Warning
Operating0°C to +70°C
Storage-40°C to +85°C
ESD-Sensitive Electronic Equipment!
The evaluation kit is shipped in a protect ive anti-static pa ckage. The board sys tem
must not be subject to high electrostatic potentials.
We recommend using a grounding strap or similar ESD protective device when
handling the board in hostile ESD environments (off ices with sy nthe tic car pet , for
example). Avoid touching the component pins or any other metallic element on
the board.
1.2Power Supply Warning
Hardware Power Supply Limitation
Powering the board with voltages higher than 5 VCC (e.g., the 12 VCC power
adapters from other kits such as Arduino kits) may damage the board.
Hardware Power Budget
Using the USB as the main power source (max. 500 mA) is acce ptable only with the
use of the on-board peripherals and low-power LCD extension.
When external peripheral or add-on boards need to be powered, we recommend
the use of an external power adapter connected to the USB Micro-AB connectors
(can provide up to 1.2A on the 3.3V node).
Several options are available to power up the SAMA5D2-XULT board:
USB-powered through the USB Micro-AB connector (J23 - defa ult configuration)
Powered through a rechargeable battery Li-polymer 3.7V connected to J3 or J4
Powered through the USB Micro-AB connector on the Atmel Embedded Debugger (EDBG) interface (J14)
2.1Power up the Board
Unpack the board, taking care to avoid electrostatic discharge. Connect the USB Micro-AB cable to the connector
(J23). Then connect the other end of the cable to a free USB port of your PC.
Table 2-1.Electrical Characteristics
Electrical ParameterValue
Input voltage5 VCC
Maximum Input voltage (limits)6 VCC
Maximum DC 3.3V current available1.2A
I/O voltage3.3V only
Unlike Arduino Uno boards, the SAMA5D2-XULT board runs at 3.3V. The maximum
voltage that the I/O pins can tolerate is 3.3V. Providing higher voltages (e.g., 5V) to
an I/O pin could damage the board.
After boot up, you can run some sample code or your own application on the development kit. You can download
sample code and get technical support from www.atmel.com.
Linux software and demos can be found on http://www.at91.com/linux4sam/bin/view/Linux4SAM/.
Please make sure to load the latest software version before starting your
evaluation. For more information, please go to
The Atmel SAMA5D2XULT is a full-featured evaluation platform for the Atmel SAMA5D2 series ARM-based
embedded microprocessor units (eMPU). It allows users to extensively evaluate, prototype and create applicationspecific designs.
4.2Equipment List
The SAMA5D2-XULT board is based on the integration of an ARM Cortex-A5-based microprocessor with external
memory, one Ethernet physical layer transceiver, one SD/MMC interface, one host USB port and one device USB
port, one 24-bit RGB LCD and debug interfaces.
Seven headers, compatible with Arduino R3 (Uno, Due) and two Xplained headers are available for various shield
connections.
4.3Board Features
Table 4-1.Board Specifications
CharacteristicsSpecifications
Dimensions (L x W x H)135 x 88 x 20 mm
ProcessorSAMA5D27 (289-ball BGA package), 14x14 mm body, 0.8 mm ball pitch
Reset, Wake-up and free user push button
One tri-color user LED (red, green, blue)
5.Board Components
R18
R11
R24
C1
C3
TP3
C2
R17
R16
R15
R14
Q1
C8
R9
R8
Q2
C9
R10
R23
C5
C6
R5
R1
TP1 TP2
J1
R27
R22
R21
R7
R6
C7
C11
R12
R25
U1
C4
JP1
BP1
C12
L2
R35
R31
R32
R34
R33
R39
R36
R37
R38
J2
R28
J3
R26
R20
R19
L1
C13
L3
Q3
C10
R13
C14
R29
R2R3R4
L4
J5
C18
C16
R48
R45
R47
JP2
R40
R42
J4
R30
R41
D1
U2
C17
C20
TP5
Y1
D4
R46
D3
C15
R43
TP4
Q4
C21
J6
R64
U3
R61
R60
R49
C25
D2
R44
C19
C22
L6
L5
TP6
JP3
C24
R59
C35
C34
R70
R69
R68
R67
C36
C31
C28
C29
C30
C27
JP4
C37
TP7
C23
R63
C33
C26
Q5
Y2
R66
R65
J9
J8
C38
R58
R57
R56
R55
R54
R53
C39
R52
R51
R50
R71
R62
C32
R73
R72
J17
R81
R80
R79
R78
R77
R76
Y3
L10
J7
L7L8L9
R74
J11
C42
R123
R105
R100
C41
C40
R96
R95
R94
R93
R92
R91
R90
R89
R88
R87
R86
R85
R84
R83
R82
JP5
R75
J10
J13
J12
C43
R103
R122
R121
R120
R119
R118
R117
R116
R115
R114
R113
R112
R111
R110
R109
R108
R124
R104
R99
R130
C44
R129
C45
R131L12
L11
J18
R137
R136
R135
R134
R133
R132
JP6
C46
Y4
R138
C47
TP8
R102R101
79R89R
U5
J14
J19
R152
R146
C51
R143R142
R141R140
R139
C48
R128R127
R126R125
R107R106
U4
C50
C49
L13
U7
J15
R154
R151
R150
R149
R148
R147
R145
R144
U6
R153
U8
R158
R155
C52
J16
R163
R161
R159
R156
R162
R160
R157
BP2
U9
C53
U10
R169
R167
R165
R164
U11
R177
R175
R173
R171
R182
R181
C55
R180
C54
R179
R178
J22
R172
R170
R168
R166
JP7
L14
C56
J20
BP3
J21
R176
R174
J23
J24
JP8
C60
C59
R184
R183
C57
JP9
J26
J25
C58
42
3
42
3
4
1
3
4
2
3
2
D22
SCL1
F3_RXD
SDA1
F0_RXD
F3_TXD
F0_TXD
F4_RXD
F4_TXD
GND
AREF
SDA0
SCL0
A5-USB-A
D23
V5V5
8
10
9
12
11
13
BOOT_DIS
211920
17
18
XPRO EXT2
161415
1
0
324
567
XPRO EXT1
XPRO POWER
VDD_5V_IN
F1_TXD
F1_RXD
WWW.ATMEL.COM
D51
D49
D50
D48
PIOBU
A5-JTAGEDBG-JTAG
D47
D46
EDBG-USB
SDMMC1
ISC
D45
D43
D44
D42
DIGITAL
VDDBU
D41
D40
B
B
D39
D37
D38
D36
HSIC
A
WAKE UP
D35
D33
D34
D32
SDMMC0
D31
D30
RESET
D29
D27
D28
D26
VDDIODDR
D25
D24
D53
GND
GND
D52
A
A5-USB-B
R
CANTX1
CANRX1
VDD_3V3
CANRX0
CANTX0
VBAT
STAT
ETH
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
NC
GND
GND
5V
3V3
RST
3V3
CLASS D
TM
VDDCORE
POWER
3.3V LEVELS
RTS GND
RXD VCCTXD
CTS
EDBG_DIS
DEBUG
PB_USER
DEBUG_DIS
LCD
Pin1
VBAT
RGB LED
VDD_3V3_LP
5.1Board Overview
The fully-featured SAMA5D2-XULT board integrates multiple peripherals and in terface connectors as shown in
Figure 5-1.
Figure 5-1.SAMA5D2-XULT Board Overview
5.1.1Default Jumper Settings
Figure 5-1 shows the default jumper settings. Blue jumpers are configuration items. Red jumpers are current
measurement points. Table 5-2 describes the functionality of the jumpers.
Table 5-1.SAMA5D2-XULT Jumper Settings
JumperDefaultFunction
JP1OPENDisable EDBG
JP2OPENDisable Debug
JP3CLOSEVDD_3V3_LP current measurement
JP4CLOSEVDDCORE current measurement
JP5CLOSEVDDISC + VDDIOP0/1/2 current measurement
JP6CLOSEVDDBU current measurement
JP7CLOSEVDDIODDR_MPU current measurement
JP8CLOSEVDD_5V_IN current measurement
JP9OPENDisable CS of SPI&QSPI&eMMC memories
Table 5-2 describes the interface connectors on the SAMA5D2-XULT.
Table 5-2.SAMA5D2-XULT Board Interface Connectors
ConnectorInterfaces to
J23USB A Device. Supports USB device using a type Micro-AB connector
J13USB Host B. Supports USB host using a type A connector
J1Serial DBGU (3.3V level)
J11JTAG, 10 pin IDC connector
J14EDBG USB connector
J15USB C (not populated)
J6Ethernet
Detailed information on the device power supplies is provided in the tables “SAMA5D2 Power Supplies” and
“Power Supply Connections” in the SAMA5D2 Series datasheet.
®
®
| SMART SAMA5D2 Series is a high-performance, power-efficient embedded MPU based on the
Cortex®-A5 processor. Please refer to the SAMA5D2 Series datasheet for more information.
Power-up and power-down considerations are described in section “Power Considerations” of the SAMA5D2
Series datasheet.
5.3.2.3 ACT8945A Power Management IC
The ACT8945A is a complete, cost-effective and highly-efficient ActivePMU™ power management solution,
optimized to provide a single-chip power solution and voltage sequencing for Atmel
The power-up sequence provided in the SAMA5D2 Series datasheet must be
respected for reliable operation.
SAMA5D2/SAMA5D3/SAMA5D4 and SAM9 series MPUs. It also meets the contro l requirements of these de vices.
The ACT8945A features three step-down DC-DC converters and four low-noise, low-dropout linear regu lators
along with a complete battery charging solution featuring the advanced ActivePath™ system-power selection
function.
Refer to the ACT8945A datasheet at www.active-semi.com for more details.
The three DC-DC converters utilize a high efficiency, fixed-frequency (2 MHz), current-mode PWM control
architecture that requires a minimum number of external components. Two DC-DC converters are capable of
supplying up to 1100 mA of output current, while t he third supports up to 1200 mA. All four low-dropout linear
regulators are high performance, low-noise regulators that supply up to 320 mA of output current.
Note:1. Occasional board startup problems occurred when powered from a USB source having a weak VBUS level below 4.8V. To
avoid the voltage drop and consequential startup problems, production boards were assembled with a 0 Ω resistor in place
of the Schottky diode D9 shown here.
Supply Group Configuration
The ACT8945A provides:
All power supplies required by the SAMA5D2 device:
To generate a true 5V voltage from the PMIC output (4.8V typical), a FAN48610 low-power boost re gulator is
integrated into the design. This feeds the 5V USB host and the 5V LCD.
Figure 5-4.Power Boost 5V
5.3.2.5 Input Power Options
There are several power options for the SAMA5D 2- XUL T board .
The USB-powered operation is the default configuration. It comes from the USB device port connected to a PC or
a 5V DC supply. The USB supply is sufficient to power the board in most applications. It is important to note that
when the USB supply is used, the USB-B Host port has limited power. If USB Host port is required for the
application, it is recommended that an external DC supply be used.
Figure 5-5 provides the schematics of power options.
VSYS_5VVDDB_5V
A3
C180
10uF
R34510K
L27
0.47uH
B1
B2
B3
VIN
SW1
SW2
EN
U22
VOUT1
VOUT2
PGND1
PGND2
FAN48610
AGND
A1
A2
C1
C2
C3
C181
22uF
Figure 5-5.Input Powering Scheme
EDBG_USB_VBUS_5V[14]
USBA_VBUS_5V[10]
Note: USB-powered operation eliminates additional wires and batteries. It is the preferred mode of operation for
any project that requires only a 5V source at up to 500 mA.
5.3.2.6 Battery Supply Source
The ACT8945A features an advanced battery charger that incorporates the ActivePath architecture for system
power selection. This combination of circuits provides a complete, advanced battery-management system that
automatically selects the best available input supply, manages charge current to ensure system power availability,
and provides a complete, high accuracy (±0.5%), thermally regulated, full-featured single-cell linear Li+ charger .
The ActivePath circuitry monitors the state of the input supply, the battery, and the system, and automatically
reconfigures itself to optimize the power system. If a valid input supply is present, ActivePath powers the system
from the input while charging the battery in parallel. This allows the battery to charge as quickly as possible, while
supplying the system. If a valid input supply is not present, ActivePath powers the system from the battery. Finally,
if the input is present and the system current requirement exceeds the capability of the input supply, ActivePath
allows system power to be drawn from both the battery and the input supply.
In order to ease input supply detection and eliminate the size and cost of external detection circuitry, the charger
has the ability to generate interrupts based upon the status of the input supply. This function is capable of
generating an interrupt when the input is connected, disconnected, or both, whe n the charger state machine
transitions.
Charge Status Indicator
The charger provides a charge-status indicator output, nSTAT. nSTAT is an open-drain output which sinks current
when the charger is in an active-charging state, and is high-Z otherwise. nSTAT features an internal 8 mA current
limit, and is capable of directly driving a LED (D1).
Precision Voltage Detector
The LBI input connects to one input of a precision voltage comparator, which can be used to monitor a system
voltage such as the battery voltage. An external resistive-divider network can be used to set voltage monitoring
thresholds. The output of the comparator is present at the nLBO open-drain output and connected to the led red
D1.
Table 5-3.PIOs Used to Control the Battery Charger
nIRQ: Open-Drain Interrupt Output. nIRQ is asserted any time an unmasked fault condition exists or a charger
interrupt occurs.
nLBO: Low Battery Indicator Output. nLBO is asserted low whenever the voltage at LBI is lower than1.2V; it is highZ otherwise.
Figure 5-7.Battery Connector J3 and Optional J4
R18
R11
R24
C1
C3
TP3
C2
R17
R16
R15
R14
Q1
C8
R9
R8
Q2
C9
R10
R23
C5
C6
R5
R1
TP1 TP2
J1
R27
R22
R21
R7
R6
C7
C11
R12
R25
U1
C4
JP1
BP1
C12
L2
R35
R31
R32
R34
R33
R39
R36
R37
R38
J2
R28
J3
R26
R20
R19
L1
C13
L3
Q3
C10
R13
C14
R29
R2R3R4
L4
J5
C18
C16
R48
R45
R47
JP2
R40
R42
J4
R30
R41
D1
U2
C17
C20
TP5
Y1
D4
R46
D3
C15
R43
TP4
Q4
C21
J6
R64
U3
R61
R60
R49
C25
D2
R44
C19
C22
L6
L5
TP6
JP3
C24
R59
C35
C34
R70
R69
R68
R67
C36
C31
C28
C29
C30
C27
JP4
C37
TP7
C23
R63
C33
C26
Q5
Y2
R66
R65
J9
J8
C38
R58
R57
R56
R55
R54
R53
C39
R52
R51
R50
R71
R62
C32
R73
R72
J17
R81
R80
R79
R78
R77
R76
Y3
L10
J7
L7L8L9
R74
J11
C42
R123
R105
R100
C41
C40
R96
R95
R94
R93
R92
R91
R90
R89
R88
R87
R86
R85
R84
R83
R82
JP5
R75
J10
J13
J12
C43
R103
R122
R121
R120
R119
R118
R117
R116
R115
R114
R113
R112
R111
R110
R109
R108
R124
R104
R99
R130
C44
R129
C45
R131L12
L11
J18
R137
R136
R135
R134
R133
R132
JP6
C46
Y4
R138
C47
TP8
R102R101
79R89R
U5
J14
J19
R152
R146
C51
R143R142
R141R140
R139
C48
R128R127
R126R125
R107R106
U4
C50
C49
L13
U7
J15
R154
R151
R150
R149
R148
R147
R145
R144
U6
R153
U8
R158
R155
C52
J16
R163
R161
R159
R156
R162
R160
R157
BP2
U9
C53
U10
R169
R167
R165
R164
U11
R177
R175
R173
R171
R182
R181
C55
R180
C54
R179
R178
J22
R172
R170
R168
R166
JP7
L14
C56
J20
BP3
J21
R176
R174
J23
J24
JP8
C60
C59
R184
R183
C57
JP9
J26
J25
C58
42
3
42
3
4
1
3
4
2
3
2
D22
SCL1
F3_RXD
SDA1
F0_RXD
F3_TXD
F0_TXD
F4_RXD
F4_TXD
GND
AREF
SDA0
SCL0
A5-USB-A
D23
V5V5
8
10912
11
13
BOOT_DIS
211920
17
18
XPRO EXT2
161415
1
0
32456
7
XPRO EXT1
XPRO POWER
VDD_5V_IN
F1_TXD
F1_RXD
WWW.ATMEL.COM
D51
D49
D50
D48
PIOBU
A5-JTAGEDBG-JTAG
D47
D46
EDBG-USB
SDMMC1
ISC
D45
D43
D44
D42
DIGITAL
VDDBU
D41
D40
B
B
D39
D37
D38
D36
HSIC
A
WAKE UP
D35
D33
D34
D32
SDMMC0
D31
D30
RESET
D29
D27
D28
D26
VDDIODDR
D25
D24
D53
GND
GND
D52
A
A5-USB-B
R
CANTX1
CANRX1
VDD_3V3
CANRX0
CANTX0
VBAT
STAT
ETH
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
NC
GND
GND
5V
3V3
RST
3V3
CLASS D
TM
VDDCORE
POWER
3.3V LEVELS
RTS GND
RXD VCCTXD
CTS
EDBG_DIS
DEBUG
PB_USER
DEBUG_DIS
LCD
Pin1
VBAT
RGB LED
VDD_3V3_LP
Populate R if
no Super Cap
(Super)-Capacitor
energy storage
VDDBU
VDD_3V3
D6
BAT54C
3
1
2
C46
100nF
C44
DNP(1uF)
+
C42
0.2F/3.3V
R139
DNP(2.2K)
JPR6
Jumper
D5
RB160M-60TR
JP6
Header 1X2
1
2
R280100R 1%
Table 5-4.Battery J3 Signal Descriptions
PinMnemonicSignal Description
1VBATBattery I/O (exploitation and charging). Connect this pin directly to the battery anode (+ terminal)
2GNDCommon ground
3TH
5.3.2.7 Backup Power Supply
The SAMA5D2-XULT board requires a power source in order to permanently power the backup part of the
SAMA5D2 device (refer to SAMA5D2 Series datasheet). A super capacitor sustains such permanent power to
VDDBU when all system power sources are off.
Figure 5-8.VDDBU Powering Scheme Option
5.3.2.8 Power Supply Control
In the ACT8945A, three DC-DC converters (1.8V, 1.2V, 3.3V) and two LDO outputs are available.
All ACT8945A outputs can be controlled by the TWI interface through software.
Temperature Sensing Input. Conne ct to battery thermistor. TH is pulled up with a 102 μA (typical)
current internally.
The three DC-DC outputs can be enabled or disabled by the SAMA5D2 SHDN output:
WAKE UPRESET
VSYS_5V
VSYS_5V
VSYS_5V
SHDN[9]
R300R
R14 49.9K 1%
Q2
BSS138
1
3
2
R12
100K
C8
100nF
R91K C10 100nF
TP11
SMD
BP3Tact Switch
R19
0R
R8
68K
R13
49.9K 1%
R20100R 1%
Q1
BSS138
1
3
2
BP2Tact Switch
Q3
BSS138
1
3
2
TP14
SMD
R41DNP(0R)
R15
100K
nPBSTAT
nLBO
19
SDA
27
SCL
26
VSEL
25
PWRHLD
10
GNDA
3
PWREN
18
GNDP1237GNDP314EXPAD
41
SW2
OUT2
34
SW3
15
OUT3
17
OUT4
4
OUT5
5
OUT6
8
OUT7
7
nPBIN
9
SHDN = 0: The DC-DC output is disabled.
SHDN = 1: The DC-DC output is enabled.
Two push buttons are also available:
Wakeup push button: When pressed, the ACT8945A power outputs are restarted if the ACT8945A is in
shutdown mode.
Reset push button: When pressed, the ACT8945A transfers the reset signal to the MPU.
5.3.3Reset Circuitry
The reset sources for SAMA5D2-XULT bo ar d are:
Power-on reset from the power management unit (PMIC)
Push button reset BP3
External reset from Arduino connectors
JTAG or EDBG reset from an in-circuit emulator
Figure 5-9.Reset/Wakeup and Shutdown Control
5.3.4Clock Circuitry
The SAMA5D2-XULT board includes four clock sources:
Two clocks are alternatives for the SAMA5D2 processor (12 MHz, 32 kHz)
One crystal oscillator used for the Ethernet RMII chip (25 MHz)
One crystal oscillator used for the EDBG (12 MHz)
The SAMA5D2 features a DDR/SDR memory interface and an External Bus Interface (EBI) to permit interfacing to
a wide range of external memories and to almost any kind of parallel peripheral.
This section describes the memory devices that equip the SAMA5D2-XULT board.
5.3.5.2 DDR3/SDRAM
Two DDR3L/SDRAM (MT41H128M16JT-125-K - 2 Gbit = 16 Mbit x 16 x 8 banks) are used as main system
memory and totalling 4 Gbit of SDRAM on the board. The memory bus is 32 bits wide and operates with a
frequency of up to 166 MHz.
The Secure Digital Multimedia Card (SDMMC) Controller supports the Embedded MultiMedia Card (e.MMC)
Specification V4.41, the SD Memory Card Specification V3.0, and the SDIO V3.0 specification. It is compliant with
the SD Host Controller Standard V3.0 specification
One MTFC4GLDEA 4 GB eMMC is connected to the processor through the SDMMC0 port.
The SAMA5D2 device boots according to the following sequence:
1.SD CARD connected on SDHC1
2.DataFlash connected on NPCS0 SPI0
3.Optional QSPI flash connected on QSPI0 QSPI_CS0
4.eMMC connected to SDHC0
In this sequence, the first device found w ith bootable contents is select ed as the boot source. The ot hers are
disregarded.
On-board jumper (JP9) controls the selection (CS#) of the on-board bootable memory components (eMMC and
Serial DataFlash) using a non-inverting 3- state bu ffe r.
Figure 5-14.CS Disable
The rule of operation is:
JP9 = OFF (default) → enable normal boot from eMMC or serial Flash if mounted
JP9 = ON → booting from optional serial DataFlash or eMMC is disabled
Refer to the SAMA5D2 Series datasheet for more information on standard boot strategies and sequencing.
The SAMA5D2 provides two high-speed Serial Peripheral Interface (SPI) controllers. One port is used to interface
with the on-board serial DataFlash.
The four main signals used in the SPI are Clock, Data In, Data Out, and Chip Select. The SPI is a serial interface
similar to the I
It operates at a higher speed.
Transmit and receive data lines are separate.
Device access is chip select-based instead of address-based.
Figure 5-15.Serial DataFlash
2
C bus interface but with three main differences:
5.3.6.2 QSPI Serial Flash
The SAMA5D2 provides two Quad Serial Peripheral Interfaces (QSPI). One port is used to interface with the optional
on-board QSPI serial DataFlash.
The Quad SPI Interface (QSPI) is a synchronous serial data link that provides communication with external
devices in Master mode.
The QSPI can be used in SPI mode to interface to serial peripherals (such as ADCs, DACs, LCD controllers, CAN
controllers and sensors), or in Serial Memory mode to interface to serial Flash memories.
The QSPI allows the system to execute code directly from a serial Flash memory (XIP) without code shadowing to
RAM. The serial Flash memory mapping is seen in the system as other memories (ROM, SRAM, DRAM,
embedded Flash memory, etc.).
With the support of the Quad SPI protocol, the QSPI allows the system to use high-performance serial Flash
memories which are small and inexpensive, in place of larger and more expensive parallel Flash memories
The SAMA5D2-XULT board embeds one Atmel AT24MAC402/602 EEPROM using a TWI1 interface.
The AT24MAC402/602 provides 20 48 bits of Serial Electrically-Erasable Programmable Read-Only Me mory
(EEPROM) organized as 256 words of eight bits each and is accessed via an I
interface. In addition, the AT24MAC402/602 incorporates an easy and inexpensive method to obtain a globally
unique MAC or EUI address (EUI-48 or EUI-64).
The EUI-48/64 addresses can be assigned as the actual physica l address of a system hardwa re device or node, o r
it can be assigned to a software instance. These addresses are factory-programmed by Atmel and guaranteed
unique. They are permanently write-protected in an extend ed me mor y block located outsid e of the standa rd 2-Kbit
memory array.
In addition, the AT24MAC402/602 provides the value-add ed feature of a factory-program med, also guaranteed
unique 128-bit serial number located in the extended memory block (same area as the EUI address values).
The EEPROM device is used as a “software label” to store board information such as
chip type, manufacture name and production date, using the last two 16-byte blocks in
memory. The information contained in these blocks should not be modified.
5.4.1Secure Digital Multimedia Card Interface (SDMMC)
5.4.1.1 Secure Digital Multimedia Card (SDMMC) Controller
The SAMA5D2-XULT board has two Secure Digital Multimedia Card (SDMMC) interfaces that support the
MultiMedia Card (e.MMC) Specification V4.41, the SD Memory Card Specification V3.0, and the SDIO V3.0
specification. It is compliant with the SD Host Controller Standard V3.0 specification.
SDMMC0 interface is connected to the eMMC.
SDMMC1 Interface based on a 7-pin interface (clock, command, 4-bit data, power lines).
5.4.1.2 SDMMC1 Card Connector
A standard MMC/SD card connector, connected to SDMMC1, is mounted on the top side of the board. It includes
a card detection switch.
2CDAPA28Command Line
3GND–Common ground
4VCC–Supply Voltage 3.3V
5CLKPA22Clock / Command Line
6CDP A30Card Detect
7DAT0PA18Data Bit 0
8DAT1PA19Data Bit 1
9DAT2PA20Data Bit 2