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Hard drive computer apollo 16, Computer, Apollo 16 fw repeater hard drive hard drive – Universal Audio Apollo 16 User Manual

Page 26: Fw800, Firewire bus connections via repeater, Firewire bus connections via daisy chain

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Apollo 16 Hardware Manual

FireWire Basics

26

Combining FireWire 400 and 800 devices on a FireWire 800 bus

It is possible to configure a FireWire bus to run at both FireWire 400 and FireWire 800 speeds simultaneously
if the host computer bus is FireWire 800, supporting maximum throughput with a combination of FireWire 400
and FireWire 800 devices. This is accomplished by putting any/all FireWire 400 devices AFTER any/all FireWire
800 devices in a daisy chain or tree chain. If (and only if) FireWire 400 devices are attached to a FireWire 800
bus after the end of all FireWire 800 devices in a daisy chain or tree chain, the FireWire 800 devices will operate
at 800 megabits while the FireWire 400 device operates at 400 megabits. The diagram below illustrates the
recommended configuration when Apollo 16 is sharing a FireWire 800 bus with FireWire 400 devices.

Recommended Mixed Speed Setup

The example above shows the correct method of interconnecting FireWire 800 and FireWire 400 devices to a
FireWire 800 computer bus. Any mixture of daisy chains, repeaters, and/or tree chains may be used, as long as
all the FireWire 400 devices are placed after all the FireWire 800 devices.

FireWire with Thunderbolt
When Apollo 16 is connected to the computer via the Thunderbolt Option Card, both of Apollo 16’s FireWire ports
remain active and they can be connected to FireWire peripheral devices such as hard drives. For an illustration
of this configuration, see “Thunderbolt Setup” on page 20.

FireWire bus connections via repeater

Computer

Hard Drive

Hard Drive

Apollo 16

FW Repeater

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FireWire bus connections via daisy chain

Hard Drive

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Computer

FireWire bus connections via repeater and daisy chain in a “tree chain”

Apollo 16

FW Repeater

Hard Drive

Hard Drive

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This FireWire bus runs @ 400 MB because host computer is FW400

FW400

FW800

FW800

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This FireWire bus runs @ 400 MB because 1st device in chain is FW400

FW800

FW800

FW800

FW400

FW bus @ 400 MB

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This FireWire bus runs @ both 800 MB and 400 MB because the

FW400 device is located AFTER the FW800 devices in the chain

FW bus @ 800 MB

FW bus @ 400 MB

FW800

FW800

FW800

FW400

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