Set top box application

Date: 2013-11-30
Views: 69

A period of time before the launch of SKYWORTH electronic SD dual port PVR bidirectional digital TV set-top box C2100 marks the traditional set-top box actually started restructuring, including SKYWORTH, Changhong, Kyushu, Tongzhou, Shenzhou, etc. the Milky Way company early in 2011 has already begun to increase the network play function.Set top box application

Which describes the network part: integrated dual Ethernet port, support VLAN and DHCP function Ethernet:2 * RJ-000.jpg45 10/100,

That means he can be used as a router. To buy such a network set-top box in the original network environment does not need to re add other routing devices, and even can be divided into a network port to use the computer.

The network set-top box for many programs, such as ST, Hass, Haier, Qualcomm, set-top box market share Ali of these companies are relatively high, the network part of them is how to achieve it.

As these programs, the set-top box single network port can use a FHY chip (IP101, DM9000, LAN8720 etc.) to realize the network function (of course, master IC must inherit the MAC function), the master chip program does not inherit the MAC function, through the SPI interface or USB interface Ethernet control chip.

Commonly used SPI interface Ethernet control IC has MICROCHIP ENC28J60, MINDRAY 8851, etc..

Commonly used USB interface Ethernet control IC we recommend SR9700, SR9800, he is the same lot of the best cost-effective one.

These two solutions do a comparison, SPI interface wiring complex, USB interface wiring is relatively simple. (compared to USB as a common interface, we are very familiar with the former) and the transmission rate is far from USB 100M (now 1080P 2160P about HD player, I believe the future will be the mainstream) through the Ethernet controller USB interface to realize network port expansion function.

For set-top box dual network, because few master IC will integrate the 2 MAC, so for the set-top box dual network, are generally based on USB interface or SPI interface to realize the function of another network port.


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