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CBTL03SB212 Datasheet

DisplayPort Gen2 sideband signal multiplexer

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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.
GPU1
CBTL03SB212
AUX1+
AUX1
AUX2+
2:1
MUX
AUX2
+3.3 V
2 kΩ
DDC_CLK1
DDC_DAT1
DDC_CLK2
2:1
MUX
DDC_DAT2
HPD_1
HPD_2
2:1
MUX
GND
100 kΩ
AUX+
AUX
100 kΩ
+3.3 V
DDC_CLK
DDC_DAT
HPD
GPU2
SEL, XSD_N
Fig 1. CBTL03SB212 application example
002aag007
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NXP Semiconductors Electronic Components Datasheet

CBTL03SB212 Datasheet

DisplayPort Gen2 sideband signal multiplexer

No Preview Available !

NXP Semiconductors
CBTL03SB212
DisplayPort Gen2 sideband signal multiplexer
2. Features and benefits
„ 1 : 2 multiplexing of DisplayPort signals
‹ 1 high-speed differential channel for Fast AUX or AUX
‹ 1 channel for DDC clock and data
‹ 1 channel for HPD
„ High-bandwidth analog pass-gate technology
„ Very low intra-pair differential skew (5 ps typical)
„ Switch/MUX position select
„ Shutdown mode CMOS input
„ Shutdown mode minimizes power consumption while switching all channels off
„ Very low operation current of 0.2 mA typical
„ Very low shutdown current of < 10 μA
„ Single 3.3 V power supply
„ ESD 4 kV HBM, 1 kV CDM
„ Available in 4 mm × 4 mm HVQFN20 package
3. Applications
„ Motherboard applications requiring DisplayPort sideband switching/multiplexing
„ Docking stations
„ Notebook computers
4. Ordering information
Table 1. Ordering information
Type number
Package
Name
CBTL03SB212BS HVQFN20
Description
plastic thermal enhanced very thin quad flat package; no leads;
20 terminals; body 4 × 4 × 0.85 mm[1]
[1] Total height after printed-circuit board mounting = 1 mm (maximum).
Version
SOT917-1
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CBTL03SB212
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 21 February 2011
© NXP B.V. 2011. All rights reserved.
2 of 16


Part Number CBTL03SB212
Description DisplayPort Gen2 sideband signal multiplexer
Maker NXP Semiconductors
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