Universal-audio Apollo 16 User Manual Page 26
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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
METER I/O
POWER
OFF
METER
1 2 3 4 5 6 7 8
C
0
-6
-3
-9
-12
-15
-18
-21
-27
88.2
RATE
44.1
48
176.4
96
192
9 10 11 12 13 14 15 16
C
0
-6
-3
-9
-12
-15
-18
-21
-27
HOST
CLOCK
INT
EXT
METER
IN
OUT
MONITOR
1 2
C
0
-6
-3
-9
-12
-15
-18
-21
-27
FireWire bus connections via daisy chain
Hard DriveComputer
Apollo 16
METER I/O
POWER
OFF
METER
1 2 3 4 5 6 7 8
C
0
-6
-3
-9
-12
-15
-18
-21
-27
88.2
RATE
44.1
48
176.4
96
192
9 10 11 12 13 14 15 16
C
0
-6
-3
-9
-12
-15
-18
-21
-27
HOST
CLOCK
INT
EXT
METER
IN
OUT
MONITOR
1 2
C
0
-6
-3
-9
-12
-15
-18
-21
-27
Computer
FireWire bus connections via repeater and daisy chain in a “tree chain”
Apollo 16
FW Repeater
Hard Drive
Hard Drive
METER I/O
POWER
OFF
METER
1 2 3 4 5 6 7 8
C
0
-6
-3
-9
-12
-15
-18
-21
-27
88.2
RATE
44.1
48
176.4
96
192
9 10 11 12 13 14 15 16
C
0
-6
-3
-9
-12
-15
-18
-21
-27
HOST
CLOCK
INT
EXT
METER
IN
OUT
MONITOR
1 2
C
0
-6
-3
-9
-12
-15
-18
-21
-27
This FireWire bus runs @ 400 MB because host computer is FW400
FW400
FW800 FW800
METER I/O
POWER
OFF
METER
1 2 3 4 5 6 7 8
C
0
-6
-3
-9
-12
-15
-18
-21
-27
88.2
RATE
44.1
48
176.4
96
192
9 10 11 12 13 14 15 16
C
0
-6
-3
-9
-12
-15
-18
-21
-27
HOST
CLOCK
INT
EXT
METER
IN
OUT
MONITOR
1 2
C
0
-6
-3
-9
-12
-15
-18
-21
-27
This FireWire bus runs @ 400 MB because 1st device in chain is FW400
FW800
FW800 FW800
FW400
FW bus @ 400 MB
METER I/O
POWER
OFF
METER
1 2 3 4 5 6 7 8
C
0
-6
-3
-9
-12
-15
-18
-21
-27
88.2
RATE
44.1
48
176.4
96
192
9 10 11 12 13 14 15 16
C
0
-6
-3
-9
-12
-15
-18
-21
-27
HOST
CLOCK
INT
EXT
METER
IN
OUT
MONITOR
1 2
C
0
-6
-3
-9
-12
-15
-18
-21
-27
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
METER I/O
POWER
OFF
METER
1 2 3 4 5 6 7 8
C
0
-6
-3
-9
-12
-15
-18
-21
-27
88.2
RATE
44.1
48
176.4
96
192
9 10 11 12 13 14 15 16
C
0
-6
-3
-9
-12
-15
-18
-21
-27
HOST
CLOCK
INT
EXT
METER
IN
OUT
MONITOR
1 2
C
0
-6
-3
-9
-12
-15
-18
-21
-27
- Apollo 16 Hardware Manual 1
- A Letter from Bill Putnam Jr 2
- Table Of Contents 3
- Introduction 4
- Apollo 16 Features 5
- Hardware System Requirements 6
- About Realtime UAD Processing 7
- Standalone Use 7
- About Apollo 16 Documentation 8
- Technical Support 9
- Front Panel 10
- Rear Panel 13
- Digital I/O 14
- Host I/O 16
- Software Installation 17
- Interconnections 19
- Key points for this example: 20
- FireWire Basics 23
- FireWire 400 connectors 24
- FireWire 800 connector 24
- Recommended Mixed Speed Setup 26
- Digital Clocking Basics 27
- Specifications 29
- Hardware Block Diagram 32
- DB25 Wiring 33
- Troubleshooting 34
- Additional Resources 35
- Warranty 36
- Repair Service 36
- Important Safety Information 37
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