Embedded2015. 10. 27. 09:26

Network Switch Test


이번에 자체적으로 만든 네트워크 기반의 방송 시스템 테스트 화면입니다

네트워크 상에서 Audio와 비디오 모두 동기를 맞추어서 전송하는 것이 목적입니다.


네트워크 상에서 많은 수의 터미널을 붙여도 전체 터미널의 동기화에 문제가 없이 운영되는 것이 포인트입니다.





Switch : L2 Managed Switch with 2 Bypass ports


• DHCP client
• DHCP relay including option82
• Loop Protection
• LLDP Support
• QOS Support
• 802.1Q VLAN switch with 8K MACs and 4K VLANs
• Push/pop up to two VLAN tags
• IPv4/IPv6 multicast
• Policing with storm control
• RSTP support
• Hardware and software-based learning
• Link aggregation (IEEE 802.3ad)
• Independent and shared VLAN learning
• Jumbo frame support
• Dual bypass relay to mitigate powerless scenario
• 12-port
l 100M 8-ports with POE

l Gigabit 4-ports

• Bypass 

  - 2 Port

  - Fail-safe access and network operations



Real Time Encoding & Broadcast - Media Transmit Server Spec


Connection
External DVI Interface
Resolution : upto  1920x1080i
Main processor
i.MX6Q (Freescale i.MX 6Quad ARM A9 Core 1Ghz)
2D/3D Graphics engines
OS : Linux 3.0.35 kernel
1GByte DDR3 Memory
1GByte eMMC
Ethernet

      - 10/100/1000 port

      - Muticast/Broadcast UDP protocol transfer

Encoding video format

      - H.264 / H.263 / MPEG4 / MJPEG support

• Support Overlay function





Media Receiver Spec

Connection
LVDS  LCD Interface
Resolution : upto  1920x1080
Light sensor interface
Back-Light control interface
Main processor
i.MX6DL (Freescale i.MX 6DualLite ARM A9 Core 1Ghz)
2D/3D Graphics engines
OS : Linux 3.0.35 kernel
1GByte DDR3 Memory
1GByte eMMC
Dynamic BackLight control
Ethernet

      - 10/100/1000 port

      - Muticast/Broadcast UDP protocol transfer

Decoding video format

      - H.264 / H.263 / MPEG4 / MJPEG support


Posted by GUNDAM_IM
Embedded2014. 1. 2. 12:12

Embedded Network Switch Board


새로 개발된 보드는 특수 분야 산업용으로 개발한 L2 Network Switch Board입니다.

워낙 고결한(?) 분야라 부품 선정에서 부터 많이 신경을 쓴 보드입니다.




HERA-Embedded L2 Switch Board



HERA which our network switch board provide a rich set of Carrier Ethernet switching 

features such as  queue-based Ethernet services, provider bridging, protection switching, and

synchronous Ethernet. Advanced TCAM-based VLAN and QoS processing enables

delivery of differentiated services with per-service SLA guarantees. Security is assured

through frame processing using a TCAM-based integrated processor.



Overview


• HERA supports three major port configurations:


12 x1G copper PHY + 3 x QSGMII + 1 x 1G SGMII + 1 x 2.5G SGMII

12 x 1G copper PHY + 10 x 1G SGMII + 2 x 2.5G SGMII

10 x 1G copper PHY + 2 x QSGMII + 8 x 1G SGMII


General Features


• All 1G Ethernet ports are tri-speed 10/100/1000 Mbps ports

• All 2.5G Ethernet ports are quad-speed 10/100/1000/2500 Mbps ports

• Integrated copper transceivers are compliant with IEEE 802.3ab 

• SGMII ports support both 100-BASE-FX and 1000-BASE-X-SERDES

• Four megabits of integrated shared packet memory

• Fully nonblocking wire-speed switching performance for all frame sizes

• Eight priorities and eight queues per port

• Dual leaky bucket policing per queue and per port

• DWRR scheduler/shaper per queue and per port with a mix of strict and weighted queues

• 256 TCAM-based egress tagging entries

• Up to 256 TCAM-based classification entries for Quality of Service (QoS) and VLAN membership

• Up to 512 host identity entries for source IP guarding

• 256 TCAM-based security enforcement entries

• L1 Synchronous Ethernet

• L2 IEEE 1588-2008 Precision Time Protocol (IEEE 1588) with hardware-based timestamping for one-step or two-step clocks

• Energy Efficient Ethernet (IEEE 802.3az) is supported by both the switch core and the internal copper PHYs

• Audio/Video bridging (AVB) with support for time-synchronized, low-latency audio and video streaming services



Posted by GUNDAM_IM