Sony i.Link port

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Is Sony's i.Link port exactly the same as a standard IEEE 1394?
Can a standard FW cable be used to download movie files from a
Sony handycam via the i.Link port to a computer FW input?

Re: Sony i.Link port

pawihte wrote:
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The physical layer protocol should be exactly the same. The only
issue to work, is connectors or adapter cables.

The physical protocol is point to point, with the ability to build
networks of devices. Each connector is isolated from the other, by
the interface chips. The wiring is differential, with two wires
per dotted line in the diagram, or four wires total for the data
portion. The six wire connector has two additional wires which carry
bus power. When a six pin to four pin cable is used, the two power
pins in the six pin end, are not connected electrically.

    Host  TX ---------------- RX   Some   TX ------------- RX   Next
          RX ---------------- TX  Device  RX ------------- TX  Device


Re: Sony i.Link port

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Thanks. So Sony has not built in any proprietary standard into
their i.Link port?

Re: Sony i.Link port

pawihte wrote:
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In this cable advertisement at Dell, for a 6 pin to 4 pin cable, it says

    Conforms to i.LINK (IEEE1394 Standard) and provides high speed
    data transfer (400Mbps)

So it is just IEEE1394 or Firewire.

The fact there are different names, has to do with the development
history and royalties. I would expect most PC applications now,
to refer to the IEEE standard 1394, to avoid any trademarks
that cost money.

   "Sony's implementation of the system, known as "i.LINK" used a smaller
    connector with only the four signal circuits, omitting the two circuits
    which provide power to the device in favor of a separate power connector.
    This style was later added into the 1394a amendment.[3] This port is
    sometimes labeled "S100" or "S400" to indicate speed in Mbit/s."

So as long as you have an adapter cable, to connect to the plug on
the computer, you're fine.

Firewire has a protocol stack, and various stacks for different devices.
SBP2 (SCSI Bus Protocol 2) is for Firewire storage. IEC61883 standard is
used for DV transfer (or something like that). There is also an option
for IP networking over Firewire, which is no longer supported in Vista,
but is supported out-of-the-box in WinXP.


Re: Sony i.Link port

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Got it. Thanks again.

Re: Sony i.Link port

I have found that there are two types of 4-pin to 4-pin Firewire cable,
will work for streaming video to a PC and the other won't. I took
delivery of
the latter type yesterday and had problems with the computer
not recognising my
HandyCam. Google took me to which
contains the info :
In a regular FireWire cable line A always connected to line
B and vice
versa (minus to minus, plus to plus). A quick check with a
revealed that my 1.70 cable was wired straight through, i.e. pin 1
pin 1, 2 to 2 etc. So out came the wire snippers and soldering iron: the
required connections are 1->3, 2->4, 3->1, 4->2, and hey presto it
works! I
don't recommend you try this at home folks, just buy a cable
that says it's
i.Link compatible. I just ordered one for about 3.50
(not that I don't have
faith in my patched cable!)

Happy movie making!

p.s. I'm using 64-bit Vista sp1 on a Dell Studio 1555 laptop, Sony
Camcorder connected via the 4-pin 1394 port on the laptop.

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