List of network buses: Difference between revisions
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| [[Serial Input/Output eXchange|SIOX]] || Y || 62 || || || 19.2 kbit/s || |
| [[Serial Input/Output eXchange|SIOX]] || Y || 62 || || || 19.2 kbit/s || |
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| [[I²C]] || Y || |
| [[I²C]] || Y || 127 or 1023 || [[Open collector]] || || 3400 kbit/s || 7.6 m<!--Considering bus capacitance 400pF + cat5e 52pF/m rounding down. Good data missing.--> |
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| [[System Management Bus|SMB]] || Y || 128 || [[Open collector]] || || 100 kbit/s || <!--Assumed equal to I2C, correct?--> |
| [[System Management Bus|SMB]] || Y || 128 || [[Open collector]] || || 100 kbit/s || <!--Assumed equal to I2C, correct?--> |
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Revision as of 18:46, 28 February 2012
List of electrical characteristics of single collision domain segment "slow speed" network buses:
| Name | Multidrop | Max nodes | Electrical type | Cable type | Max bitrate [kbit/s] / Length | Max length [m] / bitrate |
|---|---|---|---|---|---|---|
| EIA-485 (UART based) | Y | 256 | EIA-485 | Twisted pair | 1000 kbit/s | 1330 m / 64 kbit/s |
| SCSI-1/2 | Y | 8 | Open collector | Ribbon cable | 20 000 kbit/s / 3 m | 6 m / 5 Mbit/s/ch |
| SCSI Ultra2 | Y | 16 | EIA-485 | Twisted pair | 40 000 kbit/s / 12 m | |
| LIN | Y | 16 | Single ended | 19.2 kbit/s / 40 m | ||
| SIOX | Y | 62 | 19.2 kbit/s | |||
| I²C | Y | 127 or 1023 | Open collector | 3400 kbit/s | 7.6 m | |
| SMB | Y | 128 | Open collector | 100 kbit/s | ||
| PMBus | Y | 128 | Open collector | 400 kbit/s | ||
| 10Base-2 | Y | 30 | Differential | RG58 Coax | 10 000 kbit/s / 185 m | |
| CAN | Y | 128 | EIA-485 | Twisted pair | 1000 kbit/s / 40 m | 1000 m / 40 kbit/s [1] |
| DMX512-A | Y | 512 | EIA-485 | Twisted pair 120 Ω[2] | 250 kbit/s / 100 m | 150 m / 250 kbit/s[3] |
| DCC | Y | 127 | Single ended | 5 kbit/s | ||
| RS-232 | N | Single ended | 128 kbit/s / ~1.5 m | 15 m / 19.6 kbit/s | ||
| PSI5 | Y | Twisted pair | 189 kbit/s | 12 m (approx) | ||
| 1-Wire | Y | 248 | Open collector | Single conductor, with ground | 16.3 kbit/s | 300 m |
| FlexRay | Twisted pair | 20 000 kbit/s | ||||
The number of nodes can be limited by either number of available addresses or bus capacitance. None of the above use any analog domain modulation techniques like MLT-3 encoding, PAM-5 etc.
PSI5 designed with automation applications in mind is a bit unusual in that it uses Manchester code.
See also
- Characteristic impedance
- Category 5 cable
- Telegrapher's equations
- Single ended
- Network segment
- CEBus
- KNX (standard) (EIB)
References
- ^ "Microcontroller Interfaces, Part 3". 090114 ucpros.com
- ^ "Ujjal's DMX512 Pages....DMX512 Physical properties". 090610 dmx512-online.com
- ^ "LanBox-LC FAQ, DMX FAQ and Specifications". 090610 lanbox.com