Tagged Questions

3
votes
2answers
56 views

Rationale for interleaving in G.709

According to the ITU-T G.709 (OTN) specification, a single frame has 4 'rows' and 4080 'columns' of octets, arranged like this: ...
0
votes
4answers
180 views

I2C combining read and write operation

I'm designing my own data protocol for communication between PICs, ICs, etc. and in the specification I'd like to compare it to the existing I2C protocol. There are two types of operation on the I2C ...
1
vote
3answers
166 views

Why is the data output of some ICs in two's complement form?

I've been looking into some ICs now. Some of them have the calculated result (data) in twos complement form, placed in register to be read by other IC. What is the logic behind converting the data to ...
2
votes
1answer
182 views

Understanding the OSI Model

I'm currently documenting a wireless, microcontroller-based system that I've built and I would like to use the standard industry terminology to help anyone who comes behind me comprehend it easier. ...
1
vote
1answer
153 views

What is a multiplexed network?

What is a multiplexed network? Multiplexing means many to one and sending the result over the network. As far as I know, Control Area Network (CAN) supports multiplexing. How? CAN is said to support ...
-3
votes
1answer
1k views

AX.25 protocol using arduino [closed]

I am currently working my end task with the title implementing ax.25 protocol on wireless SCADA for tele monitoring microhydro power plant. the data will be send using RF transceiver (KYL 1020) with ...
1
vote
2answers
139 views

Data transmission : what is neutral current method?

I'm reading a book about data transmission inside a PC. I'm trying to understand a phrase, translated from german, saying this : In a PC, data are transmitted almost exclusively using the ...
12
votes
1answer
934 views

Why are USB devices slower than 480 MBit/s

Motivation With a signaling rate of 480 MBit/s USB 2.0 devices should be able to transmit data with up to 60 MB/s. However today's devices seem to be limited to 30-42 MB/s while reading [Wiki:USB]. ...
1
vote
1answer
165 views

What is an INTERLOCK in J1939?

Hai I'm doing the project on J1939 Periodic Group Broadcast (PGB) protocol. I had an document where it mentions the word "INTERLOCK". I didnt get what is an INTERLOCK,First INTERLOCK,Second INTERLOCK ...
2
votes
3answers
829 views

uart communication protocol

I'm working on a project where I have to communicate different lengths command from my PC to a microcontroller. (using usb to uart bridge) I already make a litle protocol (start byte, some data, ...