CN642A again
Posted: Wed Sep 21, 2016 8:57 pm
Hi,
Sorry to start a duplicated thread as in the old forum. Since CN642A is a far superior printhead than HP45 I think the work of "Hacking the CN642A inkjet printhead" should continue.
Thanks to many forum members to get the preliminary pinout of this printhead. However, I feel what reprat0r stated "Appart from the low speed signals < 1Mhz there are 4 LVDS channels (1 clock and 3 data) we added a LVDS receiver to the breakout to be able to grab these signals. It seems there is no encription and it looks like a straight forward shift register (at least for the black) the other 2 LVDS channels control the other 3 colors. Allot more looking at bits is needed" was probably wrong.
LVDS does not usually goes as pin-to-pin or channel-to-channel mapping. There is normally a need for a conversion between serial and parallel. Please have a look at http://www.ti.com/lit/ds/symlink/ds90cr215.pdf. Would it look more like the interface? Since I don't have the printhead device in hand I can't confirm it myself.
Anyway, this is a great forum. I'd like to get this printhead working for future projects.
Regards
David
Sorry to start a duplicated thread as in the old forum. Since CN642A is a far superior printhead than HP45 I think the work of "Hacking the CN642A inkjet printhead" should continue.
Thanks to many forum members to get the preliminary pinout of this printhead. However, I feel what reprat0r stated "Appart from the low speed signals < 1Mhz there are 4 LVDS channels (1 clock and 3 data) we added a LVDS receiver to the breakout to be able to grab these signals. It seems there is no encription and it looks like a straight forward shift register (at least for the black) the other 2 LVDS channels control the other 3 colors. Allot more looking at bits is needed" was probably wrong.
LVDS does not usually goes as pin-to-pin or channel-to-channel mapping. There is normally a need for a conversion between serial and parallel. Please have a look at http://www.ti.com/lit/ds/symlink/ds90cr215.pdf. Would it look more like the interface? Since I don't have the printhead device in hand I can't confirm it myself.
Anyway, this is a great forum. I'd like to get this printhead working for future projects.
Regards
David