
Board Description
4-18
AT91SAM9M10-G45-EK User Guide
6495B–ATARM–21-Apr-10
4.2.9
Software Controlled LEDs
Three users LED are provided for general use. The LEDs are connected to PIO port lines, allowing their
control through either GPIO or PWM control.
LEDs D1 to D3 are software controlled by PIO pins.
LEDs D4 to D6 indicate Ethernet traffic and link status. These are automatically managed by on-chip
microcontroller hardware. See
.
Figure 4-14.
Software Controlled LEDs
Table 4-3.
Discrete LEDs
LED
Description
Comment
D1
Green LED
User software controlled
D2
Green LED
User software controlled
D3
Red LED
User software controlled
D4
Yellow LED
Indicates transmission or reception via Ethernet
D5
Green LED
Indicates speed 100
D6
Green LED
Is lit when a good link test has been detected
PB17
PB1
8
PB14
PB15
PB16
3
V
3
3
V
3
PD0
PD
3
1
PD
3
0
PB[14..1
8
]
POWER LED
U
S
ER INTERFACE
UP
RIGHT
DOWN
PU
S
H
LEFT
C
3
6
10n
C
3
6
10n
D2
Green
D2
Green
1
2
C
3
4
10n
C
3
4
10n
R2
8
100R
R2
8
100R
R22
470R
R22
470R
R25
470R
R25
470R
D1
Green
D1
Green
1
2
Q2
IRLML2402
Q2
IRLML2402
1
3
2
D
3
Red
D
3
Red
1
2
C
33
10n
C
33
10n
BP
3
BP
3
JOY
S
TICK
1
2
3
4
5
6
C
3
2
10n
C
3
2
10n
C
3
5
10n
C
3
5
10n
R26
100k
R26
100k
R21
470R
R21
470R