Would somebody PLEASE have pinout for any of these 3 chips: Sigma Designs (Coppergate) CG2313QIR-00 (QFN-64) and CG3215QIR-00 (QFN-128), as well as Marvell 88E6020-NNC2 (QFN-64)? I tried everywhere I could think of on the internet without success. You can buy them alright, although not at any of the major distributors - mostly eBay, but I can't find any datasheets or at least pinouts. How one is supposed to design anything without such a basic information like chip pinout? Not even mentioning any more detailed properties... These integrated circuits are used in EOP (Ethernet Over Power) and POE (Power Over Ethernet) architecture. Please help me if you can!
I am actually trying to reverse engineer a circuit board for a bunch of identical devices I am trying to repair. The fault is very illusive, so I decided to draw a circuit diagram in order to understand the flow of the signals and find the fault. It's Ethernet Over Power (2 wires) system with transmitter and receiver connected by 2 wires. The power is successfully transferred between them, but data not. It stops somewhere on the transmitter side and doesn't even reach the connection wires. Also, I tried datasheets.com but I can't sign up.
Kind regards, Jerry.
I am actually trying to reverse engineer a circuit board for a bunch of identical devices I am trying to repair. The fault is very illusive, so I decided to draw a circuit diagram in order to understand the flow of the signals and find the fault. It's Ethernet Over Power (2 wires) system with transmitter and receiver connected by 2 wires. The power is successfully transferred between them, but data not. It stops somewhere on the transmitter side and doesn't even reach the connection wires. Also, I tried datasheets.com but I can't sign up.
Kind regards, Jerry.
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