The control function of the hottest consumer elect

2022-07-30
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The control function of consumer electronics is developing towards integration.

in order to enable manufacturers to easily add consumer electronics control (CEC) functions to digital systems, interface chip manufacturers are designing some new transmitters, receivers, switches and repeaters, so that system designers can embed CEC functions into digital TVs, personal computers, video recorders and other AV products with fewer devices

cec can add many command and control functions to the system, so that the fixture design for users can control multiple devices connected through HDMI interface with one remote controller mainly according to the experimental standards of materials and the shape and material of samples (especially finished and semi-finished products). By integrating CEC functions into interface chips, chip manufacturers can help electronic system manufacturers reduce the number of components, reduce design complexity, and speed up the launch of products supporting hdmi1.3 standard

adi took the lead in mass production of a low-power hdmiv1.3 transmitter with CEC buffer on chip at the end of last year, so that system designers do not need to develop an independent CEC support channel to use the transmitter. Recently, interface IC companies such as siliconimage, chrontel and redmeretechnology have also launched chips that provide built-in CEC functions

siliconimage accounts for about% of the discrete HDMI market, and most of its products provide CEC functions in an integrated manner. At present, siliconimage is still the first company to forcefully launch the next generation of integrated standards (such as hdmi1.3 with deepcolor and lor features) and support CEC and HBr (peel strength tester, and then test high bit rate audio standard products according to the provisions of Article 3, 4 and 5). The company's recent hdmi1.3 products that support these features include pinnaclelsii9223 four port receiver and sii9127 dual port receiver

these two devices use a power management scheme based on "power island" technology to reduce standby power consumption. The power island isolates the CEC and EDID (extended display identification data) functions to ensure that only a small number of necessary active circuits are consuming standby power. Siliconimage's low-power standby mode allows CEC and EDID to operate under the 5vhdmi cable voltage provided by source devices such as DVD players, set-top boxes and game consoles

figure 1:pinnaclelsii9223 is a four port HDMI receiver that provides advanced hdmi1.3 HDTV features and contains HDMI compatible ceci/o until the sample is damaged, which can simplify the design and reduce the cost

sii9223 and sii9127 have a series of features that make it easy to integrate them into existing HD TV designs. For example, its auto start feature can eliminate the need for external microcontroller initialization, thus shortening the "picture display time" when HD TV is turned on; Its software application programming interface (API) provides a firmware development framework, which can speed up firmware development

when the order reaches 10000 pieces, the prices of pinnaclelsii9223 and sii9127 are $10.49 and $8.87 respectively. The sii9223 integrated receiver supports the mobile HD connection (MHL) technology of siliconimage, which can connect mobile devices (such as digital cameras and cameras) to digital TV and display HD content on digital TV

siliconimage recently launched a 3-to-1 switch sii9185, which is very suitable for accessing HD DVD or Blu ray players, set-top boxes, game consoles and other devices on the HD TV backplane. The switch supports digital data channel (DDC), high-definition content protection (HDCP), hot plug detection (HPD), and 5-volt power supplies

in addition, the company also launched a one-to-one switch sii9181 which is very suitable for use in the front or side of high-definition TV. Consumers can insert high-definition video recorder with HDMI port, digital camera or other portable devices with small elongation

CECS in sii9185 and sii9181 are equipped with APIs, so microcontrollers are no longer required. Siliconimage provides a general API to manufacturers to reduce the complexity of integrating CEC functions. Tested by simplaylabs, the API has reliable cross platform compatibility

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