Atmel SAM4S-EK2 Atmel ATSAM4S-EK2 ATSAM4S-EK2 Ficha De Dados
Códigos do produto
ATSAM4S-EK2
Evaluation Kit Hardware
SAM4S-EK2 User Guide
4-20
11176A–ATARM–24-Sep-12
4.4.3
Test Points
Some test points have been placed on the SAM4S-EK2 board for the verification of important signals.
4.4.4
Assigned PIO Lines, Disconnection Possibility
As pointed out in some previous interface description, 0 Ohm resistors have been inserted on the path of
the receiver PIO lines of the SAM4S-EK2. These are the PIO lines connected to an external driver on the
board. The 0 Ohm resistors allow disconnecting each of these for custom usage (through PIO expansion
connectors for example). This feature gives the user an added level of versatility for prototyping a system
of his own. See the table below.
the receiver PIO lines of the SAM4S-EK2. These are the PIO lines connected to an external driver on the
board. The 0 Ohm resistors allow disconnecting each of these for custom usage (through PIO expansion
connectors for example). This feature gives the user an added level of versatility for prototyping a system
of his own. See the table below.
Table 4-5. Audio Input Configuration
JP17
JP19
MONO-STEREO INPUT
OFF
OFF
PIN test point (TP12)
OFF
ON
Left-in only
ON
OFF
Right-in only
ON
ON
Sum of Left-in and Right-in
Table 4-6. Test Points
Reference
Function
TP1, TP2, TP3, TP4
GND
TP5
TP6
UART TXD
UART RXD
TP7
TP8, TP9
LCD Backlight driver anode
Aux ADC input for TSC
TP12
Optional Audio PA input
Table 4-7. Disconnecting Possibility
Designation
Default Assignment
PIO
R19
0R
PC18, RDY/BSY on NAND Flash
R20
0R
PA29
R22
DNP
Optional write protection on NAND Flash
R25
0R
PA21_485
R26
0R
PA25
R27
0R
PA24
R28
0R
PA22
R31
0R
PA23
R33
0R
PA22
R34
0R
PA21_232
R35
0R
PA24
R36
0R
PA25
R44
0R
NRST