EM2838X开发板

EM2838X开发板

Features 
Video Input

- Support HD Component video decoder
- Support HDMI receiver
- Support legacy S-Video and Composite video decode
- Support video resolution 480i, 480p, 720p, 1080i, 1080p - Support frame(field) rate of 24, 25, 30, 50, 60

H.264 Encoder

- Conforms to ITU-T H.264 standard, also named MPEG-4 Part-10 AVC - Support Base-Line profile
- Encode up to 1080p 30 frame per second
- I/P-Slice

- CAVLC entropy coding
- 4x4 and 16x16 Intra Prediction
- 4x4 Transform
- MB and sub-MB partition for motion estimation
- Integer, 1/2 and 1/4 pixel for motion estimation
- Maximum search range of 28 for motion estimation - Programmable GOP sequence

Transport Stream Packetizer

- Conforms to MPEG2 Transport Stream standard - Support PAT and PMT packets with firmware
- Support H264 stream type
- Support PCM stream type

- Support PCR and PTS to ensure A/V sync - Programmable PCR interval
- Programmable PCR to PTS lag
Bit-Rate Control

- Firmware-based bit rate control is flexible and upgradeable
- Compute target QP based on bit rate goal and past bit consumption - Reservoir management for steady bit rate

DDR-SDRAM Controller

- Use 8M*32 Low power mobile DDR-SDRAM for frame buffer store - Use 1 chip for 720p or lower; Use 2 chips for 1080i or 1080p
- Support DDR-SDRAM clock up to 160 MHz

Audio

- Support I2S audio source
- AC97(AC-Link) audio in/out

DTV Transport Stream Capture

- Support DVBT, ATSC, QAM, DVBS demodulators - Receive serial form transport streams
- Null PID filter rejecting null packets

General

- USB 2.0 and 1.1 compliant
- Embedded RISC microcontroller
- Many general I/O ports controlled by the microprocessor
- Support 2 timers in the microprocessor
- Support basic and extended interrupts in the microprocessor
- Support UART with programmable baud rates in the microprocessor - Fully customizable microcode in external EEPROM, sized 16KB
- 2 sets of 2-wire command serial bus to peripheral devices