Echelon LonWorks Router - Manual (Page 55)

Network Activity Indicator – FT Router
5000
The FT Router 5000 provides two network indicator pins, RXON and TXON,
that you can connect to LEDs to show network activity, as shown in Figure 21.
You can optionally add pulse-stretching circuits to increase the visibility of the
LEDs, although they are likely visible enough without pulse stretching. Also,
because the RXON and TXON pins are not directly involved in communications,
you do not need to add buffers.
NETN
NETP
RXON
CP4
32
34
38
39
FT Router 5000
VDD3V3
+3.3 V
8
200
10k
+3.3 V
TXON
37
200
To FT-X3
Communications
Transformer
Figure 21. RX and TX Network Activity Indicators – FT Router 5000
Power Requirements
The following sections describe the power requirements for a L ON W ORKS router.
RTR-10 Power Requirements
An RTR-10 router requires a +5 VDC ±10% at 200 mA.
Series 5000 Router Power Requirements
A Series 5000 router chip requires a +3.3 VDC power source with sufficient
current to power the chip in all modes of operation.
The supply current requirements for the Series 5000 router chip are outlined in
Table 12, including typical requirements for the different operating states of the
Router 5000 at various system clock rates.
Important: Although general Series 5000 chips support 80 MHz operations,
neither the Router 5000 chip nor the FT Router 5000 chip supports this system
clock setting.
L ON W ORKS Router User’s Guide 45