Ansonng
Newbie level 6
fpga hdmi
I am now trying to make a HDMI 1-8 splitter with a Xilinx Spartan 3A. This FPGA supports TMDS I/O standard. I think it is no problem to split TMDS Channel and Clock signals. However, I am getting puzzled to split other control signal listed below.
1. CEC - It is a bidirectional signal. Can I just directly connect the 1 source and 8 sink devices together? Should I need to consider the driving problems?
2. DDC - It is a kind of I2C signal. Can I just connect all the devices together without any signal enhancement? Should I need to consider the driving problems?
3. Hot Plug Detect - Should I just weakly pull down this pin? I guess it will be high if any one HDMI sink is connected. Am I right?
Thank you very very very much for any comment!!
Anson
I am now trying to make a HDMI 1-8 splitter with a Xilinx Spartan 3A. This FPGA supports TMDS I/O standard. I think it is no problem to split TMDS Channel and Clock signals. However, I am getting puzzled to split other control signal listed below.
1. CEC - It is a bidirectional signal. Can I just directly connect the 1 source and 8 sink devices together? Should I need to consider the driving problems?
2. DDC - It is a kind of I2C signal. Can I just connect all the devices together without any signal enhancement? Should I need to consider the driving problems?
3. Hot Plug Detect - Should I just weakly pull down this pin? I guess it will be high if any one HDMI sink is connected. Am I right?
Thank you very very very much for any comment!!
Anson