Smartphone Hardware Architecture

Mokwon University
Yong Heui CHO(조용희)
yhcho@mwu.ac.kr

Smartphone Hardware
Architecture

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

2

←inbritech.com

Computer of Tomorrow

Devoid of CPU and memory
3

Smartphone HW: AP
 Application Platform Chip








AP: Application Processor
Flash memory
Mobile Dynamic RAM
PMU: Power Management Unit
Audio Codec
Bluetooth
WiFi

4

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

5

World Phone Capability
 UMTS/HSDPA/HSUPA
 850, 900, 1900, 2100 MHz

 GSM/EDGE
 850, 900, 1800, 1900 MHz

 CDMA EV-DO Rev. A
 800, 1900 MHz
-UMTS: Universal Mobile Telecommunications System
-HSDPA: High Speed Downlink Packet Access
-GSM: Global System for Mobile communication
-EDGE: Enhanced Data rates for GSM Evolution
-EV-DO: Evolution-Data Optimized
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

7

Apple iPhone 5S
 Apple released iPhone 5S in Sept. 2013.
 A7 dual-core processor: the first 64-bit
processor for a smartphone
 M7 motion coprocessor
 Touch ID: fingerprint recognition system

8

←ifixit.com

Breakdown of iPhone 5S
Without battery

326 ppi Retina display
←ifixit.com

9

Mother-Board

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)

 5.92 [Whr]: unit for energy (W x hour)
 1,560 [mAhr]: unit for current duration

10

Apple A7 Processor
 SoC (System on Chip): 64 bits, 1.3 GHz, 1GB(?)
 Instruction set (architecture): ARMv8-A (many
registers)
 Core: Cortex-A53/A57(?)
 Designed by Apple (licensed from ARM) and
manufactured by Samsung
NEON: Multimedia

Instruction

SIMD: Single Instruction Multiple Data
11

Data

Home Button & Touch ID
 Fingerprint scanner
 CMOS chip and bunch of capacitors
 Detection by very small capacitors
 Developed by AuthenTec

12

WiFi Module
 Murata 339S0205 Wi-Fi module based on
the Broadcom BCM4334
 Dual-band 2.4 GHz and 5 GHz IEEE 802.11
a/b/g/n Wi-Fi connectivity
 Bluetooth 4.0 + HS (High Speed)
 Integrated FM radio receiver
 5G WiFi(?): 2x2 MIMO

WiFi Module
13

Mother-Board
M7 Motion Coprocessor

A7 Processor
Qualcomm MDM9615M Baseband Modem
Qualcomm WTR1605L LTE/HSPA+/CDMA2K/TDSCDMA/EDGE/GPS Transceiver

14

Samsung Galaxy S4
 Samsung released Galaxy S4 in April 2013.
 Samsung Exynos 5 Octa: big.LITTLE

15

←ifixit.com

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)

 9.88 [Whr]: unit for energy (W x hour)
 2,600 [mAh]: unit for current duration

16

Exynos 5 Octa
 1.6 GHz quad-core ARM Cortex-A15
and 1.2 GHz quad-core ARM CortexA7 (ARM big.LITTLE), 2GB RAM
 Designed by Samsung (licensed from
ARM) and manufactured by Samsung

←electronicsweekly.com
17
←howchip.com

Sensors

18

←androidheadlines.com

Smartphone Hardware Architecture

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