Serial & TCP Data Frame

dineshkumar mani37

Prodigy 110 points

Hi,

For, Serial Data Transfer,

e.x) 1 byte= 11 bit = start bit(1) + data(8) + null(1) + stop bit(1)

if a "A" transmitted 5 bytes= 55 bits actually transmitted

by the same,I needed to know for TCP/IP Segments

e.x)one byte = ?...number of bits

one frame=1514 bytes = ? bits

if anyone knows reply pls!........

over 9 years ago

0 Amit Ashara over 9 years ago

TI__Guru**** 244400 points

Hello Dinesh

1. What is the NULL bit in Serial Frame?
2. 1 Byte = 8 bits so, I guess you can do the maths!!!!

Regards
Amit

0 dineshkumar mani37 over 9 years ago in reply to Amit Ashara

Prodigy 110 points

i known 1byte=8bit,
what is ur opinion about start bit & start bit?

e.g) baud rate =9600 bps,
if u are not consider about start bit & stop bit, it will transmit 9600/8 = 1200bytes/second.
but as per serial port theory, one stop , one start, one null , so 9600/11= 872.72 bytes/second
which one is correct?,

what about network packets?

0 Amit Ashara over 9 years ago in reply to dineshkumar mani37

TI__Guru**** 244400 points

Hello Dinesh,

From your original post

dineshkumar mani37 said:
e.x)one byte = ?...number of bits
one frame=1514 bytes = ? bits

It is the protocol to have a start and stop bit and honestly I do not have an opinion about it. If you look at the protocol the parity bit is optional. So it is 10 bits (1 Start, 8 bits of data and 1 stop bit).

Regards

Amit

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Serial & TCP Data Frame