[sane-devel] Visioneer 6200USB backend

[Kyle Dickerson]

I have a Visioneer 6200USB and am interested in trying to write a backend
for it, or at least providing as much information about the model as
possible.

I've taken the scanner apart to look at chip information, however I don't
know which of the chips are important to know about.  The board that has the
power and USB connectors on it has a metal plate over two chips.  This plate
makes no contact with anything and is soldered into place, so as far as I
can tell it's just there to be annoying.

The most advanced chip (one with most pins coming out) on the PCB that I can
see has the following information: "EICI10440A E48A3-000 0019"  One of the
chips underneath the metal plate says ESIC.  I can try to remove the plate,
but I am not entirely confident that I could do it without damaging
something.  I have pictures of each of the 3 boards that I found inside if
that would help.  I attempted to get a picture of the chips underneath the
metal plate, but I wasn't very successful.  I can try again when I have
better lighting, I think I'll be able to read the information off of one of
them.

I'm mostly looking for some guidance, as I have no idea how to proceed with
this.  I was going to try to contact Visioneer, but they don't list any
email addresses, and their only contact phone number for support is a 900
number (toll).

The output from sane-find-scanner -v -v is:
<device descriptor of 0x0461/0x0345 at 001:005 (Primax USB Scanner)>
bLength               18
bDescriptorType       1
bcdUSB                1.00
bDeviceClass          0
bDeviceSubClass       0
bDeviceProtocol       0
bMaxPacketSize0       8
idVendor              0x0461
idProduct             0x0345
bcdDevice             0.01
iManufacturer         2 (Primax)
iProduct              1 (USB Scanner)
iSerialNumber         0 ()
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         32
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         64 (Self-powered)
 MaxPower             48 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      2
   bInterfaceClass    16
   bInterfaceSubClass 1
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      2 (bulk)
    wMaxPacketSize    64
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 1>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x02 (out 0x02)
    bmAttributes      2 (bulk)
    wMaxPacketSize    64
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0

Thanks,
-Kyle Dickerson
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