IDC recently released a research report that the total mobile phone shipments of global mobile phone manufacturers will reach nearly 1.8 billion this year. It is estimated that the shipment of smart phones this year will be 668 million, an increase of 38.8% over last year. The diversified functions of today's smartphones are increasingly becoming a more attractive option for more and more users.
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The transition period for mobile phone users from feature phones to smartphones will continue. In this important period of change, the World Peace Group of the United Nations General Assembly launched the RockChip + Spreadtrum 3G smartphone solution to help customers attract more attractive business opportunities.
Scheme block diagram:
The main chip introduction:
Rockchip RK30XX
Features:
CPU
Dual-core Cortex-A9
1.2-1.5GHz
GPU
Mali-400MP GPU
Support OPENGL ES 1.1/2.0
High performance dedicated 2D/3D processor
VPU
1080p full-format video decoder
1080p video encoder for H.264/MVC/VP8
Interface
Support DDR3/LPDDR2 with high-perf
Embedded 60bits ECC, support MLC NAND Flash
Dual panel display
Dual camera supported
Embedded HDMI 1.4a
Rich peripheral and connectivity
Spreadtrum SC880xG
Features:
ARM926EJa 32-bit RISC processor, up to 550 MHz
High performance multi-layer AHB-Lite bus system and low power APB system
Signal processing for modem functions is mainly implemented in DSP sub system, and the embedded DSP sub-system includes
CEVA-Xa 1622 64 bit fixed point DSP core
The instruction set is VLIW and SIMD, optimized for communication and multi-media processing
System timing
For GSM/GPRS/EDGE, recommend usinga low swing 26 MHz master clock input. For TD-SCDMA, an on-chip PLL will provide specification required Rx/Tx clock
Programmable TDMA timing with 1/8 chip resolution in TD-SCDMA mode and 1/4 symbol resolution in GSM mode
Time tracking in power saving mode
Support inter-RAT handover: GSM/GPRS/EDGE to TD-SCDMA, as well as TD-SCDMA to GSM/GPRS/EDGE
16 general RFCTL wires for RF chip or antenna control
1 dedicated SPI ports for BB-RF chip communication
12-bit D/A converter with programmable gain for Automatic Frequency Control (AFC)
10-bit D/A converter with programmable gain
reference picture:
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