IEEE1394.1995 Addressing

Asynchronous Write, Read, or Lock packet format (shared memory)

Dest

Node Id

(16 bits)

Src

Node Id

(16 bit)

Offset

(48 bit)

...

...

Data

Node ID

16 Bit

Bus Id

(10 bits)

Phy Id

(6 bits)

• 1394 Address considered to be shared memory location for Asynchronous Transaction

• Node ID changes when device is added or removed from 1394 bus.

1394 Address

64 Bit

Node Id

(16 bits)

Offset

(48 bits)

Isochronous send or receive packet format

Channel

Number

(6 bit)

...

...

Data

• Isochronous Channels, one transmitter per channel, 0 or more receivers per channel.

• Globally unique, static Node Identifier.

• 64 bits composed of unique Vendor ID and unique device serial number.

World Wide Unique ID

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