Cisco 3410DVB Manual do Utilizador descarregar pdf (Página 101)

History Repeats Itself Again...

• Television

– There was a time when one television set per home was

considered a luxury

– Today 76% of US households have two or more television sets

– Three factors contributed to multiple TV ownership

• Purchase of newer/bigger/ better television

• Additional television to reduce conflicts over TV use

• Television in bedroom / kitchen

– Replace the word “TV” with “PC” and history repeats itself

again!

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 138 139

Programmable 1
Solutions 1
• Technology overview 2
• Digital modem technologies 2
• Conclusions 2
So What is Broadband Access? 3
Digital Modem Growth Drivers 4
Frustrated Maybe … 6
Source: Dataquest CAGR 39.2% 7
• Potential to leverage voice 8
Satellite Modem Overview 10
Data Broadcasting 11
System Block Diagram 12
• Decoder 13
Broadcom Corporation 14
Host Interfaces 15
Satellite Modem Design 16
Spartan-XL 17
Spartan-III 17
Spartan-II 17
Spartan-II Device Functions 19
ISDN Overview 22
Understanding ISDN Equipment 23
• Widely available 24
The Original Digital Service 25
Two Major Variants 26
ISDN Model 27
Functional Groupings 28
Reference Points 29
U Reference Point 30
S/T Interface 31
Proprietary TDM interfaces 32
ISDN In the Real World 33
External ISDN Modem 34
Internal ISDN Modem 35
Always On ISDN 36
• Developed by Ascend 37
• Uses ISDN transport 37
ASSP Providers 38
• Design objectives 39
ISDN PCMCIA Modem 40
ISDN PCMCIA FPGA 41
Spartan Functionality 43
Without Xilinx 44
With Xilinx 44
ISDN Summary 45
Cable Modems 46
Cable Modem Overview 47
• Offered by cable companies 48
Cable Modem - Market Drivers 51
• Concerns over data security 54
What is a Cable Modem? 55
How Do Cable Modems Work? 56
Set-Top Box 57
Cable M odem 57
DOCSIS Cable Modem 58
Inside a Cable Modem 60
QAM & QPSK 65
Downstream Data Channel in 66
Cable Modem Physical Layer 66
Upstream Data Channel in 68
Many Different 70
• Always-on connection 71
DSL Overview 73
ADSL Equipment 74
DSL Market Trends 75
DSL Technologies 77
I/O Routing Ring 79
Spartan-II Clock Management 80
Distributed RAM 81
Block RAM 81
External Memory 81
Spartan-II Block RAM 82
Spartan-II IP Solutions for 87
HDLC Controllers 87
Memec Design Services 89
CoreEL MicroSystems 90
The Spartan-II Competitive 92
Advantage: 100k Unit Cost 93
Solution <$6 94
Programmable ASSP - Value 95
Conclusions on Digital Modems 96
The Digital Modem 97
Evolves Into The 97
Residential 97
Gateways 97
New Dimensions to Home 98
Internet Access 98
Convergence Is Happening! 99
The Push for Home Networking 100
• Television 101
Worldwide Home Network & 102
Residential Gateway Forecast 102
Residential Gateway 103
Solutions Available 105
Market Requirements and 105
Access & Home Networking 106
Television 106
Broadband Based or 107
Digital Modems RGs 107
Broadband Centric or 108
Home Networking is Here! 110
First Generation RGs 111
Second Generation RGs 112
Third Generation 114
HiperLAN2) 116
– Distribution of broadband 117
– Seamless connection & 117
– Management software for 117
Satellite Modems 118
ISDN Modems 119
Interface 120
ADSL Broadcast Solution 121
DSL Modem Home Gateway 122
V.90/56K Modems - Analog 125
Phonelines 125
Broadband Access in Hotel 125
– Provides error correction 127
– Provides data compression 127
Analog Modems 128
Satellite Modem Block Diagram 133
ISDN CPE - Block Diagram 134
Cable Modem - Block Diagram 135
Channels 136
$9.95$9.95 137

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