Transcript Anatomy of mobile systems

Anatomy of mobile systems
Lin Zhong
ELEC424, Fall 2010
Outline
•
•
•
•
•
Physical
Integrated circuit
Software
Cost
Power profile
• Administration
2
Physical profile: Case study
• HP Jornada 928
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–
–
–
–
–
–
Released in 2002
TI OMAP 710 133MHz
64MB RAM
CompactFlash I
221 grams
QVGA refective TFT display
GSM/GPRS
Windows Pocket PC 2002
3
Component stack-up (17mm)
Portable Electronics
Product Design &
Development, Bert
Haskell, 2004
4
Weight profile
Batteries
16%
Display assembly
22%
Miscellaneous
6%
Enclosure
31%
Electronic boards
25%
Which parts are most likely to
become lighter?
5
Physical trend
• Lighter but not necessarily smaller
• More integrated
– Jornada 928 has about 600 discrete components
– System-in-a-package (SiP)
– Digital RF
• Single-chip cell phone
Source: ICCAD’05, Bogdan Staszewski, TI
6
Integrated circuit: Jornada 928
• Simplified block diagram (Bert Haskell)
7
Software profile
Applications
Libraries
Managed runtime
(Java virtual machine, .NET framework)
(graphics, e.g. OpenGL, user interfaces, e.g.
Qt)
Operating system
Device drivers
(System interface to peripheral devices)
Firmware
(BIOS, fixed software in microcontrollers)
8
Cost profile
Housing/mecha
nical, $7.16, 4%
Source: PEPDD, Bert Haskell
Batteries,
$6.64, 4%
Final assembly,
$1.64, 1%
Displays,
$30.68, 18%
Electronic
assemblies,
$124.38, 73%
Substrates,
$10.38, 8%
Total cost: $170.5
Insertion,
$10.22, 8%
PCB test, $3.19,
3%
Integrated
circuits, $68.86,
56%
Connectors,
$4.17, 3%
Discretes,
$15.14, 12%
RF modules,
$12.41, 10%
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Cost profile (Contd.)
Bluetooth/FM/WLAN
3%
Camera
5%
GPS receiver
1%
Power IC
2%
Cellular transceiver
2%
Audio Codec
1%
Memory MCP
2%
iPhone 3GS
~$179 BOM
Manufacturing
4%
Rest
27%
$199 with AT&T plan
Baseband
7%
SDRAM (Stacked on)
5%
Display
11%
Application processor
8%
>$700 from ebay
without plan
Touch screen
9%
Flash (16GB)
13%
10
Cost profile (PC)
• Dell Inspiron 1420 basic system: ~$650 (08/08)
– Including Windows Vista Home: ~$200 (retail)
• Office 2007-Student:~$100
– Professional version :~$500
• Security software: ~$100 (three years)
Software is really expensive!!!
11
iPhone 3GS teardown
12
iPhone 3GS teardown (Contd.)
$1.3
$13
$3.65
$1.15
$24
$1.25
$8.5
$14.46
$2.8
13
iPhone 3GS teardown (Contd.)
$2.25
$5.95
14
Power profile: Pocket PC
Power profile of HP iPAQ 4350 (mW)
Basic idle,
244, 12%
Bluetooth,
Earphone, 470, 23%
65, 3%
Power for audio
delivery
Speaker,
367, 18%
Computing,
383, 19%
LCD, 82,
4%
Lighting,
444, 21%
iPAQ 4350, 2004
15
Power profile: Smartphone
Flight mode: Sleep, 3,
0%
Lighting: Keyboard,
73, 3% Lighting: Display I,
148, 5%
Cellular network, 17,
1%
Lighting: Display II,
61, 2%
LCD, 13, 0%
Compute, 370, 13%
Speaker, 45, 2%
Bluetooth, 440, 16%
GPRS, 1600, 58%
Audiovox 5600, 2004
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Power profile: Interactive tasks
A computer spends most of its energy in idle periods due to the
human-computer speed mismatch
1
Power (Watt)
0.8
0.6
0.4
Display power
significant
0.2
User delays
0
0
1
2
3
4
5
Time (s)
Power trace for Calculator on a Sharp Zaurus 5500
99% time and 95% energy spent waiting during interaction
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Power profile: Make a call
2
1.8
1.6
Power (W)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
1
2001
4001
6001
8001
10001
12001
14001
16001
18001
20001
22001
24001
26001
28001
30001
Time (ms)
Ringing
Voicemail
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Power profile: Browse web
3
2.5
Power (W)
2
1.5
1
0.5
0
1
2001
4001
6001
8001
10001
12001
14001
16001
18001
20001
22001
Time (ms)
Downloading (cnn.com)
Back lightings change
19
Power profile: Play video
1.6
Speaker on
1.4
Power (W)
1.2
Speaker on
1.0
0.8
0.6
0.4
0.2
0.0
1
2001
4001
6001
8001
10001
12001
14001
16001
18001
Time (ms)
1.6
Speaker off
1.4
Power (W)
1.2
Speaker off
1.0
0.8
0.6
0.4
0.2
0.0
1
2001
4001
6001
8001
10001
12001
14001
16001
18001
Time (ms)
30-minute of streaming video will exhaust the battery
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Industrial profile
Services
Verizon, Sprint, AT&T etc.
Applications
Microsoft
Operating system
System
integration/manufacture
IC
Nokia
Apple
RIM
(Blackberry)
Samsung, LG,
HTC, Moto,…
Palm
TI, ARM, MIPS (Digital), Qualcom
Broadcom, Marvel (RF, Analog)
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Source: Yahoo! Finance
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