Electronics News
Archive : 13 March 2008 год
The SN75DP122, SN75DP128 and SN75DP129 all provide one dual-mode DisplayPort input and outputs to enable connectivity between a range of devices. Dual-mode is the ability of the graphics processor unit (GPU) to transmit either DisplayPort or HDMI/DVI data over the DisplayPort signal lines while supporting the required control signals.
The SN75DP129 translator has one dual-mode DisplayPort input and one transition-minimized differential signaling (TMDS) output. This device can function as a DisplayPort to HDMI/DVI dongle converter for external attachment to Notebook PCs. The translator can also be used in applications that display PC video data on Digital TVs.
The SN75DP128 is a switch with one DisplayPort input to one of two DisplayPort outputs. This device can be used in conjunction with laptop docking stations. It allows the GPU to direct video data either through the docking station connector or to a DisplayPort edge connector.
The SN75DP122 features one DisplayPort input to either a DisplayPort or a level translated TMDS output, allowing connection to either a monitor or a TV. On this device, the auxiliary port can be configured as an I2C port with an integrated I2C repeater, which is required for HDMI operation.
Both the SN75DP128 and SN75DP122 support switching of the bi-directional auxiliary, hot plug detect (HPD) and cable adapter detect channels. An integrated level-shifter for the HPD line is provided, which avoids the need to use additional components.
DisplayPort is a royalty-free digital video interface standard from the Video Electronics Standards Association (VESA). It is intended for internal and external display connections. Compared to existing standards, it offers audio and video performance over one cable and more compact sockets and connectors for notebook PCs and LCD displays.
The SN75DP122 and SN75DP128 are available now from TI and its authorized distributors in a 56-pin QFN package. Suggested resale pricing is $1.90 and $1.65, respectively. The SN75DP129 is available now in a 36-pin QFN package with suggested resale pricing at $1.30. All pricing is in 1,000-piece quantities.
STMicroelectronics announced a integrated power-management solution for MOST (Media Oriented Systems Transport) networks. The L5961 power management IC, which has been designed in cooperation with fabless semiconductor manufacturer SMSC to work with that company’s MOST network processors, includes both the power supply and MOST-compliant power-management control logic, together with diagnostic and system monitoring (power supply, network status, wake-up events, temperature).
In particular, the device features multiple power modes, including an Ultra-Zero Power Mode that offers a typical quiescent current of 5 microamps. Other features of the L5961include: an integrated 5 or 3.3V, 650mA DC-DC converter, which supplies the network processor and can also supply power to an external low-voltage application; two voltage regulators to supply power to the fiber-optic transmitter and fiber-optic receiver; a diagnostic transceiver for the network physical layer; and the integration of three battery detectors for voltage monitoring.
Available in PowerSSO36 packages, or in the PowerSO36 option for applications requiring a higher thermal dissipation, engineering samples of the L5961 are now available to lead customers. Full qualification of the L5961, ready for volume production, is planned for Q3 2008. The L5961 is priced at $3 in quantities of 1000.