一、Hi2318/Hi2318M Chip is introduced

Hi2318 is a high-performance, highly integrated media playback chip integrated with 32-bit embedded MCU, built-in 256Mb capacity DDRI, with TV as the display terminal.

The Hi2318 integrates a high-performance hardware JPEG decoder capable of handling JPEG images up to 64M pixels.

Hi2318 internal integration of high performance video decoding engine,can support MPEG/1/2/4, H.264,AVS,AVS+ series of video format decoding.

Hi2318 built-in hardware audio decoding engine, can support MP3,WMA and other audio format decoding.

The Hi2318 supports the USB2.0 OTG interface and can be used as a device to connect to a PC or as a master controller to read USB flash disks.

The Hi2318 has built-in DTMB demodulation and is highly integrated.

二、Chip performance

★ CPU

• MIPS compatible with high-speed MCU, the highest main frequency 600M

★ Built-in memory

• Built-in 256Mb DDRI memory

★ Graphics processor

• Hardware high speed JPEG decoder
• The maximum resolution is 8000 x 8000
• Hardware ZOOM IN/OUT
• Baseline and Progressive JPEG are supported
• Motion-JPEG 25fps@VGA

★ Video processo

• Supports MPEG1/4 series, H.264, AVS, AVS+ standards
• Decoding performance: 25fps@D1(720×576), (1280×720, to be defined)

★ Audio processor

• Configurable audio decoding engine, can support MP3, WMA, etc
• The sampling rate is 8KHz~48KHz, and the code rate is 8Kbps~320Kbps

★ TS stream input

• Support dual - mode TS stream input, built-in DTMB demodulation

★ USB Interface

• High-speed USB2.0 OTG interface
• Built-in usb PHY
• Can be used as a USB Device to connect to a PC
• It can be used as a USB Host to read the USB flash drive

★ Display interface

• 3-channel programmable GAMMA correction
• Two-layer OSD, supporting true color, 256/16 color optional
• Supports CVBS output

★ Peripheral Interfaces

• Support infrared interface
• Two UART serial ports, maximum speed 115200bps
• 1 channel PWM output

★ Power supply and packaging

• Kernel and GPIO power supply, core 1.1V, IO 3.3V
• DDR powered, 2.5V/1.25V
• BGA100 package

★ Built-in DTMB demodulation performance features

• Fully comply with DTMB (GB 20600-2006) standard
• Digital resampling, supporting 6, 7 or 8MHz bandwidth mode
• Support all mode combinations specified in the standard

• Carrier: single carrier (C=1), multi carrier (C=3780)
• Protection interval mode: PN420, PN595, PN945
• Modulation mode: 4-QAM, 16-QAM, 32-QAM, 64-QAM, 4QAM-NR
• Interleave length: M=240, M=720, M=0 (no interleaving)
• LDPC code rate: 0.4, 0.6, 0.8

• Full automatic mode detection
• Automatic spectrum inversion identification and correction
• Captured carrier frequency deviation up to 400KHz
• The frequency deviation of the crystal oscillator can be captured up to 300ppm
• Industry leading single carrier and multi carrier reception performance

• Excellent fixed reception performance, supporting SFN applications
• Excellent mobile reception performance, achieving a breakthrough in single carrier high-speed mobile reception

• Suppression of adjacent frequency interference and co frequency interference
• Pulse noise interference suppression
• Engineering monitoring functions: constellation diagram, channel time domain characteristics, channel frequency domain characteristics, signal-to-noise ratio, bit error rate, etc