Whoo! I was able to get my hands on this when I switched this with a Zinwell as it works well with that particular TV's built-in VCR. Instead of copying word-for-word info from a competing website, and I had the unit in hand, I opened it up.
The circuitboard has two parts. On the left is the power circuit, It has a ribbon cable that connects to a socket in the 901's mainboard. Unlike the DTT900, the 901's power connector is removable - making upgrading the firmware less cumbersome when needed.
The mainboard has two numbers on it, one of them has "LSX300-4PM" which is also mentioned on a competing forum.
The Tuner is an LG EBL38878103 This is a newer tuner that makes the unit's analog pass-thru function work.
The CPU is an LGDT1111T Online info says its a 200 Mhz ARM CPU with Java facilities, little other info about it - it's probably an exclusive in-house chip
The software is on a MX T075220 / 29LV160CTTC-70 Flash chip
The work memory is a Quimonda HYB25DC256163CE-5 16-bit 256 MBs chip
There are two open connectors.
One set is a 10-point line of empty posts by the power supply. This could most likely be a service power connection. Power fed into here would turn the unit on in programming mode - the data fed in through the infrared port. Yeah, kinda slow, but I know a couple of devices that still get programmed this way. The manufacturer probably has a device that does the programming of the mainboard in this fashion.
The other one is quite very curious. It almost fooled me as an integrated circuit, until I examined the top surface depression up close. Shining a light right on top revealed a thin 4-lead ribbon connector slot. Its proximity to the
RGB video output hints that this is a
YUV connector for HDTVs. Of course, there is no hardware currently connected to it, but can be easily upgraded by a replacement bottom plate,
YUV connector piece, thin cable, and a screw to hold it in. The zoom function would have to be edited on the firmware to allow letterboxing of 480i programs.
There you have it. More info than the competitors - I checked.
