ATSAMA5D35-EK Atmel, ATSAMA5D35-EK Datasheet - Page 57

• Manufacturer Part Number: ATSAMA5D35-EK
• Description: Development Boards & Kits - ARM EVAL KIT SAMA5D35 CRYPTO
• Manufacturer: Atmel
• Series: SAMA5D6r

Specifications of ATSAMA5D35-EK

• Product: Evaluation Kits
• Tool Is For Evaluation Of: SAMA5D35
• Core: ARM
• Interface Type: Serial, USB
• Operating Supply Voltage: 5 V
• Data Bus Width: 32 bit
• Description/function: Allows users to extensively evaluate, prototype and create application-specific designs
• Dimensions: 165 mm x 135 mm x 20 mm
• Maximum Operating Temperature: + 60 C
• Minimum Operating Temperature: 0 C
• For Use With: SAMA5D35

6.2.3.1
6.2.3.2
6.2.4
Figure 6-7.
SAMA5D3x-EK User Guide
PB31
PB27
PB29
PB26
PB28
PB30
T X D 1
D T X D
C T S 1
D X D
Disabling J-Link-OB-SAM3U128
Hardware UART via CDC
USART
T S 1
X D 1
USART1
USART1 Com Port
The J-Link-OB-ATSAM3U4C may be disabled by Jumper JP15 (PA26, pin 25 of the ATSAM3U4C CPU).
The pin uses internal pull-up (so if JP15 is not required, simply leave the pin on the J-Link-OB-
ATSAM3U4C open), jumper shortens to ground. If J-Link is disabled, serial COM port via CDC is still
functional.
Disabling the jumper is not required to use the external debugger since target interface (JTAG/SWD)
remains disabled until first target communication takes place.
J-Link-OB-ATSAM3U4C comes with an additional hardware UART that is accessible from a host via
CDC which allows terminal communication with the target device. This feature is enabled only if a certain
port (CDC disabled, PA25, pin 24 on J-Link-OB-ATSAM3U4C) is NOT connected to ground (open).
The USART1 is used as a user serial communication port. This USART is buffered with an RS-232
Transceiver (TXD, RXD and handshake CTS/RTS control) and connected to the DB-9 male socket. The
software must assign the appropriate PIO pins to enable the USART function.
R27
R27
R28
R28
R132
R132
R30
R30
R31
R31
R133
R133
Jumper not fitted: J-Link-OB-ATSAM3U4C is enabled and fully functional
Jumper fitted: J-Link-OB-ATSAM3U4C is disabled
Jumper JP16 not fitted: CDC is enabled
Jumper JP16 fitted : CDC is disabled
DNP
DNP
DNP
DNP
0R
0R
0R
0R
0R
0R
0R
0R
0R
0R
0R
0R
VDDIOP1
R22
R22
47k
47k
R23
R23
47k
47k
R24
R24
47k
47k
C13
C13
4.7u
4.7u
VDDIOP1
C15
C15
C18
C18
C14
C14
100n
100n
100n
100n
100n
100n
23
21
19
10
11
12
3
1
5
7
8
9
MN4
MN4
ADM3312EARU
ADM3312EARU
VCC
GND
V+
V-
SD
EN
T1IN
T2IN
T3IN
R1OUT
R2OUT
R3OUT
T1OUT
T2OUT
T3OUT
R1IN
R2IN
R3IN
C1+
C2+
C3+
C1-
C2-
C3-
6
20
2
4
24
22
18
17
16
15
14
13
C16
C16
C17
C17
C19
C19
R29
R29
100n
100n
100n
100n
100n
100n
0R
0R
RTSC1
TXDC1
CTSC1
RXDC1
1
6
2
7
3
8
4
9
5
11180A–ATARM–30-Jan-13
EARTH_RS232
J8 J8
L5
L5
220ohm at 100MHz
220ohm at 100MHz
1
2
6-9