Is there any chip available with serial interface (three wires) for TCP/IP connectivity? ali
TCP/IP Chip!
Started by ●September 5, 2006
Reply by ●September 6, 20062006-09-06
Ali wrote:> Is there any chip available with serial interface (three wires) for > TCP/IP connectivity? > > > ali >TCP/IP is a software protocol. Do you mean a chip with serial interface to connect to ethernet ? Google for Atmel ENC28J60.
Reply by ●September 6, 20062006-09-06
Donald wrote:> Ali wrote: > > Is there any chip available with serial interface (three wires) for > > TCP/IP connectivity? > > > > > > ali > > > > TCP/IP is a software protocol. > > Do you mean a chip with serial interface to connect to ethernet ? > > Google for Atmel ENC28J60.Donald! thanks for pointer, yes you are right i'm asking a chip with serial interface for ethernet connectivity. Let me have a look at Atmel ENC28J60. ali
Reply by ●September 6, 20062006-09-06
>> Google for Atmel ENC28J60.Do you mean Microchip ENC28J60? It's a nice chip, and it's also available as a complete board (with Ethernet transformers and the like) for $40. The serial interface is SPI.
Reply by ●September 6, 20062006-09-06
mc wrote:> >> Google for Atmel ENC28J60. > > Do you mean Microchip ENC28J60? > > It's a nice chip, and it's also available as a complete board (with Ethernet > transformers and the like) for $40. The serial interface is SPI.Yes ENC28J60 is provided by MicroChip not Atmel. Actually my system design is lacking pins thats why i want to have serial interface (SPI etc..). Do we have any other option ? with minimum pins required to interface. ali
Reply by ●September 6, 20062006-09-06
mc wrote:>>>Google for Atmel ENC28J60. > > > Do you mean Microchip ENC28J60?Opps, Yes Microchip.> > It's a nice chip, and it's also available as a complete board (with Ethernet > transformers and the like) for $40. The serial interface is SPI. > >I would look carefully at this chip. It draws over 100ma in idle. The data sheet states 240ma active current. donald
Reply by ●September 6, 20062006-09-06
Ali wrote:> Yes ENC28J60 is provided by MicroChip not Atmel. Actually my system > design is lacking pins thats why i want to have serial interface (SPI > etc..). Do we have any other option ? with minimum pins required to > interface.Lantronix XPort Digi ME
Reply by ●September 6, 20062006-09-06
"Richard H." <rh86@no.spam> wrote in message news:iwtLg.6577$c07.5297@fed1read04...> Ali wrote: > > Yes ENC28J60 is provided by MicroChip not Atmel. Actually my system > > design is lacking pins thats why i want to have serial interface (SPI > > etc..). Do we have any other option ? with minimum pins required to > > interface. > > Lantronix XPort > Digi MEEven more current consumption..... (>300mA) Meindert
Reply by ●September 6, 20062006-09-06
Meindert Sprang wrote:>>Lantronix XPort >>Digi ME > > > Even more current consumption..... (>300mA)Yep, a lot of power for just 10Mbps. IIRC, even more than a 10/100 like ASIX. But then power was not one of the OP's criteria, and how many Ethernet devices are battery operated? Of course, if he only has 3 pins to spare, there is the small question of whether he's got resources for an entire IP stack. At $50 a pop there are also other (larger) module options like Rabbit. But at this price, why not switch micros and get a 32-bitter with everything built-in for less? Most of the requirements are missing here...
Reply by ●September 6, 20062006-09-06
Richard H. wrote:> Meindert Sprang wrote: > >>Lantronix XPort > >>Digi ME > > > > > > Even more current consumption..... (>300mA) > > Yep, a lot of power for just 10Mbps. IIRC, even more than a 10/100 like > ASIX. > > But then power was not one of the OP's criteria, and how many Ethernet > devices are battery operated? Of course, if he only has 3 pins to > spare, there is the small question of whether he's got resources for an > entire IP stack. > > At $50 a pop there are also other (larger) module options like Rabbit. > But at this price, why not switch micros and get a 32-bitter with > everything built-in for less? > > Most of the requirements are missing here...The device is stationary so power consumption is not an issue here, well guys let me elaborate my problem. We want to provide a web interface of our RFID reader, at moment it is providing only RS232 interface for hosts. From reader to host the data will be always less then 13 bytes and from host to reader it would be even less than that. So I'm not looking for super higher data rates with encryption etc..>Of course, if he only has 3 pins to spare, there is the small question of whether he's >got resources for an entire IP stack.Yes that is an issue here, we never though that we would be having web interface of our gadget but now management wants to add that as well. We are lacking I/O pins from our MCU but maximum 6 to 7 pins can be spared for that. As Lantronix XPort and Digi ME only requires 5 fundamental pins [ http://www.semiconductorstore.com/images/Items/Lantronix/XPort_blockdiagram.jpg ] ofcourse except power and ground but its kind of expensive solution to us. ali