Good morning,
My name is Moraali. I am currently doing a project, but I have a problem on the cable communication issuefor more than 6 months.
FPGA is a Xilinx chip... You can get the info from http://www.xilinx.com/products/virtex4/index.htm
I am using Virtex4 ML401 (LX type)
The data sheet is on (look on the top left at sheet 12 )
http://www.xilinx.com/support/documentation/boards_and_kits/ml401_2_3_schematics.pdf
================================================
Description
So by using DMM, I found out that the PC and the Modem port is not loopback. Only the FPGA is loopback (pin 1,4and 6 is connected).
PC => Male Port
Modem => Female Port
FPGA => Male Port
I tested the cables (NOT the PC , NOT the MODEM , NOT the FPGA .... ONLY FROM THE CABLES USED) for three times and the result is below (for 9 Pin D Type ) :-
1) Presently what cable you are using in between PC and Modem? For your info, the flow control is none
WORK FINE
PC Modem
2 => 2
3 => 3
5 => 5
2) And also what cable in between FPGA and PC?
WORK FINE
PC FPGA
2 => 3
3 => 2
5 => 5
3) I just tested between FPGA and Modem
DOES NOT WORK FINE
FPGA Modem
2 => 2
3 => 3
5 => 5
I am not from engineering background. So, I am not so sure about labeling the Tx and Rx. I just assume that from the PC the 2 is Rx and the 3 is Tx. And 5 is definitely Gnd
a)Whether using any Hardware handshaking in between PC and Modem? - On both the 9 Pin D Type Connector check out the Pins
1- DCD
4 - DTR
6 - DSR
7 - RTS
8 - CTS
PC (Female) Modem (Male)
1 => 1
4 => 4
6 => 6
7 => 7
8 => 8
================================================
I only have you as my tutor. Please guide me. From the description ,
1)How can I rectify this problem? Should I buy a cable?
2)what type of cable should I purchase for the FPGA-Modem?
Please reply to me as soon as possible.
My contact:-
email:moraali_ali@yahoo.com
Thank you
My name is Moraali. I am currently doing a project, but I have a problem on the cable communication issuefor more than 6 months.
FPGA is a Xilinx chip... You can get the info from http://www.xilinx.com/products/virtex4/index.htm
I am using Virtex4 ML401 (LX type)
The data sheet is on (look on the top left at sheet 12 )
http://www.xilinx.com/support/documentation/boards_and_kits/ml401_2_3_schematics.pdf
================================================
Description
So by using DMM, I found out that the PC and the Modem port is not loopback. Only the FPGA is loopback (pin 1,4and 6 is connected).
PC => Male Port
Modem => Female Port
FPGA => Male Port
I tested the cables (NOT the PC , NOT the MODEM , NOT the FPGA .... ONLY FROM THE CABLES USED) for three times and the result is below (for 9 Pin D Type ) :-
1) Presently what cable you are using in between PC and Modem? For your info, the flow control is none
WORK FINE
PC Modem
2 => 2
3 => 3
5 => 5
2) And also what cable in between FPGA and PC?
WORK FINE
PC FPGA
2 => 3
3 => 2
5 => 5
3) I just tested between FPGA and Modem
DOES NOT WORK FINE
FPGA Modem
2 => 2
3 => 3
5 => 5
I am not from engineering background. So, I am not so sure about labeling the Tx and Rx. I just assume that from the PC the 2 is Rx and the 3 is Tx. And 5 is definitely Gnd
a)Whether using any Hardware handshaking in between PC and Modem? - On both the 9 Pin D Type Connector check out the Pins
1- DCD
4 - DTR
6 - DSR
7 - RTS
8 - CTS
PC (Female) Modem (Male)
1 => 1
4 => 4
6 => 6
7 => 7
8 => 8
================================================
I only have you as my tutor. Please guide me. From the description ,
1)How can I rectify this problem? Should I buy a cable?
2)what type of cable should I purchase for the FPGA-Modem?
Please reply to me as soon as possible.
My contact:-
email:moraali_ali@yahoo.com
Thank you
