Specifications

dLAN 200 AVmodule 6400
5
devolo AG
Charlottenburger Allee 60 Tel.: [phone] www.devolo.com
D-52068 Aachen Fax: [phone] [e-mail]
3 Security Pushbutton
The security pushbutton provides an easy
method for pairing two or more dLAN devices.
By pressing the pushbutton for a short period
of time on each device that should be added to
the network the devices are connected as if
they had the same password.
100pF
Module
Pushbutton
+3.3V
GND GND
10K
Fig. 3: Pushbutton circuitry
A schematic of the pushbutton circuitry
appears in Figure 3. When the pushbutton is
pressed the pushbutton pin is pulled to ground
(logical ‘0’).
4 GPIO’s
The four GPIO’s (GPIO8, 9, 10 and
LED_PWR) are used for system status
indication. Although three of these GPIO’s
(GPIO8, 9 and 10) are used as boot strap
configuration. Their state will be latched during
the positive edge of the reset signal. You can
connect a LED according to Figure 4 or 5, or
must at least connect the 3.3 kΩ resistor. The
possible configurations are shown in Table 8.
Pin MII(Ethernet)
MAC Mode
MII(Ethernet)
PHY Mode
GPIO8
HM_SEL
Pull up
(Figure 4)
Pull down
(Figure 5)
GPIO9 Pull down
(Figure 5)
Pull down
(Figure 5)
GPIO10 Pull up Pull up
(Figure 4) (Figure 4)
Table 8: boot strapping configuration
4.1 System Status LED Indicators
The system status LED indicators are
controlled by routines in the MAC firmware.
The status LED indicator configuration is listed
in Table 10. The both signals GPIO8 and
GPIO10 for the Powerline Link indication can
be connected to a dual colour LED to realize a
throughput indicator which indicates four states
shown in Table 9.
Dual LED
colour
GPIO8 GPIO10 PLC status
green
ON OFF
Good
connection
orange
ON ON
Medium
connection
red
OFF ON
Poor
connection
off
OFF OFF
No
connection
Table 9: throughput indication
Figure 4 and Figure 5 illustrate how a pull-up
or pull-down resistor can be connected to
control each LED and provide the appropriate
configuration. The LED_PWR LED indicator
should be connected to ground. Component
values in these figures are typical. The value of
the series current limiting resistor is selected
based on the desired LED current. Note that
the maximum LED current should be limited to
12 mA.