CBTL03SB212

CBTL03SB212 DisplayPort Gen2 sideband signal multiplexer Rev. 1 — 21 February 2011 Product data sheet 1. General description The CBTL03SB212 is a sideband signal multiplexer for DisplayPort Gen2 applications. It provides one differential channel capable of switching or multiplexing (bidirectional and AC-coupled) DisplayPort 1.2 Fast AUX or AUX signal, using high-bandwidth pass-gate technology. Additionally, it provides for switching/multiplexing of the Hot Plug Detect signal as well as the Display Data Channel (DDC) signals, for a total of three channels. A typical application of CBTL03SB212 is on motherboards where one of two GPU display sources needs to be selected to connect to a display sink device or connector. A controller chip selects which path to use by setting a select signal HIGH or LOW. Due to the non-directional nature of the signal paths (which use high-bandwidth pass-gate technology), the CBTL03SB212 can also be used in the reverse topology, e.g., to connect one display source device to one of two display sink devices or connectors. GND CBTL03SB212 AUX1+ AUX1− AUX2+ AUX2− +3.3 V 2:1 MUX 100 kΩ AUX+ AUX− 100 kΩ +3.3 V GPU1 2 kΩ DDC_CLK1 DDC_DAT1 DDC_CLK2 DDC_DAT2 HPD_1 HPD_2 2:1 MUX HPD 2:1 MUX DDC_CLK DDC_DAT SEL, XSD_N GPU2 002aag007 Fig 1. CBTL03SB212 application example www.DataSheet4U.com NXP Semiconductors CBTL03SB212 DisplayPort Gen2 sideband signal multiplexer 2. Features and benefits „ 1 : 2 multiplexing of DisplayPort signals ‹ 1 high-spe...