1. Mokwon University
Yong Heui CHO(조용희)
yhcho@mu.ac.kr
Smartphone Hardware
Architecture

2. Definition
 Smartphone
 Mobile phone + computer + sensors +
wireless I/O
 Mobile OS: speed vs. battery life
2
←inbritech.com

3. Computer of Tomorrow
Devoid of CPU and memory
3

4. Smartphone HW: AP
 Application Platform Chip
 AP: Application Processor
 Flash memory
 Mobile Dynamic RAM
 PMU: Power Management Unit
 Audio Codec
 Bluetooth
 WiFi
4

5. Smartphone HW: CP
 Connectivity Platform Chip
 CPU: Central Processing Unit
 DSP: Digital Signal Processing
 RF baseband processing
 Voice processing
 PA: Power Amplifier
 Tx-Rx switch
 DAC + ADC
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6. Openmoko Project
 Open source mobile phone project
UART: Universal Asynchronous Rx/Tx
SDIO: Secure Digital I/O
GPIO: General Purpose I/O
I2C: Inter-Integrated Circuit
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7. Samsung Galaxy S III
 Samsung released Galaxy S III in May 2012.
 Quad-core A9 processor
7 ←techrepublic.com

8. Breakdown of Galaxy S III
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9. Li-ion Battery
 3.8 [V]: used for bias of active devices
(amplifiers, mixers, …)
 This voltage should be small to consume
smaller power (P = I x V)
 2,100 [mAh]: unit for energy (W x hour)
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10. A9 Processor
 1.4 GHz, 2 GB RAM
 Designed by Samsung (licensed from
ARM) and manufactured by Samsung
NEON: Multimedia
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11. Jack, Speaker, GPS Antenna
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12. 2 GB Mobile DRAM
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13. PMIC
 Qualcomm Power Management IC
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14. RF Transceiver
 Qualcomm multiband/mode RF
transceiver
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15. Quad-Band PA
 TriQuint GSM/GPRS/EDGE power
amplifier
LTE PA
15