Echelon LonWorks Router Manual de usuario Pagina 42
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Name
Pin
Number Type Description
VDD3V3
42
Power
3.3 V Power
SDA_CS1~ 43 Digital I/O for
Memory
I
2
C: serial data
SPI: slave select 1 (active low)
VDD1V8 44 Power 1.8 V Power Input
(from internal voltage regulator)
SCL 45 Digital I/O for
Memory
I
2
C serial clock
MISO 46 Digital I/O for
Memory
SPI master input, slave output (MISO)
SCK 47 Digital I/O for
Memory
SPI serial clock
MOSI 48 Digital I/O for
Memory
SPI master output, slave input (MOSI)
PAD 49 Ground Pad Ground
Clock Pins (XIN and XOUT)
Both the Router 5000 chip and FT Router 5000 chip require a 10 MHz external
crystal or oscillator to provide its input clock signal. The chip then multiplies the
input frequency by an amount specified in the device’s hardware template
(specified during device development using the NodeBuilder FX Development
Tool; see NodeBuilder Hardware Template) to derive its internal system clock
frequency. For multipliers greater than one, the chip uses a phase-locked loop
(PLL) to drive and manage the internal on-chip system clock frequency.
A Series 5000 router chip requires a 10.0 MHz external clock signal for operation.
An example part that meets the requirements for a Series 5000 router chip is the
Abracon Corporation ABMM2-100000MHz-D1 Ceramic Surface Mount Low
Profile Quartz Crystal.
The crystal must have a load capacitance rating of 18 pF. The internal
capacitance for the XIN and XOUT pins is approximately 4.5 pF. To maintain
the crystal’s load capacitance, add a pair of 33 pF external capacitors, as shown
in Figure 13. Note that Figure 13 applies to a single Series 5000 half-router.
Also, you must consider trace capacitance when calculating the values of the
external capacitors. In the figure, the values for R1 (feedback resistor) and R2
(damping resistor) apply to any crystal used.
32 LONWORKS Router Electrical Interfaces
- LONWORKS 1
- Router 1
- User’s Guide 1
- Welcome 3
- Audience 3
- Related Documentation 3
- Getting Support 4
- FCC Notice 5
- VDE Notice 5
- Canadian DoC Notice 5
- Table of Contents 7
- ONWORKS Routers 11
- LONWORKS Router Products 13
- RTR-10 Overview 14
- ONWORKS 15
- LonWorks Router Based on the 17
- Router 5000 17
- FT Router 5000 17
- ONWORKS router 18
- Router Types 19
- Repeater 19
- Configured Router 19
- Learning Router 20
- Channel A 23
- Router 1 Router 2 23
- Channel B 23
- Power Line Routers 23
- PL Phase A 24
- PL Phase B 24
- Message Receiving Side 25
- Message Sending Side 25
- Direction of Message Flow 25
- Router Performance 28
- LONWORKS Router Electrical 31
- Interfaces 31
- Overview 32
- Electrical Interface 32
- RTR-10 Electrical Interface 32
- ACLK2, BCLK1, and BCLK2 34
- ACP[4..0] and BCP[4..0] 34
- ASVC~ and BSVC~ 34
- AXID[4..0] and BXID[4..0] 34
- Note: RTR-10 Modules 36
- SERVICE~ 37
- Router 5000 Pinout 37
- FT Router 5000 Pinout 39
- Clock Pins (XIN and XOUT) 42
- CP[4..0] – Router 5000 Only 44
- IO[11..0] 46
- SCL, and SDA_CS1~) 47
- Power and Ground 47
- RX Activity Indicator 54
- TX Activity Indicator 54
- Power Requirements 55
- RTR-10 Power Requirements 55
- Low Voltage Protection 56
- LONWORKS Router Mechanical 59
- Developing a LONWORKS Router 65
- Using Custom Transceivers 68
- Differential Driver Circuit 71
- Comparator Circuit 72
- Using an EIA-485 Transceiver 74
- Using an FTT-10A Transceiver 75
- GROUND GUARD 77
- Input Output 89
- NodeBuilder Device Template 91
- Buffer Configurations 92
- Example Neuron C Source 93
- ONWORKS Router Design Issues 95
- PCB Layout Guidelines 96
- Power Supply 97
- Circuitry 97
- EMI Design Issues 99
- Compatibility) 99
- EMC Design Tips 99
- ESD Design Issues 100
- Installing a LONWORKS Router 103
- Introduction 104
- Defining a Network Topology 104
- Connecting Power 105
- Messages 106
- Testing Router Installation 107
- Network Management Messages 109
- Standard Messages 110
- Router-Specific Messages 111
- Set Router Mode 112
- Group Forward 113
- Subnet Forward 114
- Group No Forward 114
- Subnet No Forward 114
- Router Status 115
- Far Side Escape Code 116
- Set Routing Algorithm 116
- Set Buffer Size 116
- LONWORKS Routers 119
- Communications Parameters 120
- Determining RTR-10 Firmware 127
- Version 127
- Router Firmware Version 128
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