CBTL06121
Gen1 hex display multiplexer
Rev. 2 — 26 October 2010
Product data sheet
1. General description
The CBTL06121 is a six-channel (‘hex’) multiplexer for DisplayPort and PCI Express
applications at Generation 1 (‘Gen1’) speeds. It provides four differential channels
capable of switching or multiplexing (bidirectional and AC-coupled) PCI Express or
DisplayPort signals, using high-bandwidth pass-gate technology. Additionally, it provides
for switching/multiplexing of the Hot Plug Detect signal as well as the AUX or DDC (Direct
Display Control) signals, for a total of six channels.
The CBTL06121 is designed for Gen1 speeds, at 2.5 Gbit/s for PCI Express or 2.7 Gbit/s
for DisplayPort. The device is available in two different pinouts (A and B, orderable as
separate part numbers) to suit different motherboard layout requirements.
The typical application of CBTL06121 is on motherboards, docking stations or add-in
cards where the graphics and I/O system controller chip utilizes I/O pins that are
configurable for either PCI Express or DisplayPort operation. The hex display MUX can be
used in such applications to route the signal from the controller chip to either a physical
DisplayPort connector or a PCI Express connector using its 1 : 2 multiplexer topology. The
controller chip selects which path to use by setting a select signal (which can be latched)
HIGH or LOW.
Optionally, the hex MUX device can be used in conjunction with an HDMI/DVI level shifter
device (PTN3300A, PTN3300B or PTN3301) to allow for DisplayPort as well as HDMI/DVI
connectivity.
NXP Semiconductors
CBTL06121
Gen1 hex display multiplexer
MULTI-MODE
DISPLAY SOURCE
4
CBTL06121
4
DP
PEG
DisplayPort
connector
HPD
AUX
4
docking connector
DisplayPort
REPEATER
DisplayPort
connector
002aad089
Fig 1.
Intended usage 1: DisplayPort docking solution for mobile platform
MULTI-MODE
DISPLAY SOURCE
CBTL06121
HDMI/DVI
4
4
PTN3300
or
PTN3301
HDMI/DVI
connector
PEG
HPD
DDC
4
docking connector
dock
PTN3300 or
PTN3301
HDMI/DVI
connector
002aad090
Fig 2.
Intended usage 2: HDMI/DVI docking solution for mobile platform
CBTL06121
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 26 October 2010
2 of 20
NXP Semiconductors
CBTL06121
Gen1 hex display multiplexer
DDC
MULTI-MODE
DISPLAY SOURCE
DP/HDMI/
DVI/PEG
4
CBTL06121
4
PTN3300
or
PTN3301
DP/
HDMI/
DVI
connector
PEG
HPD/PEG RX
AUX/PEG RX
4
x16 PEG connector
002aad091
Fig 3.
Intended usage 3: Digital display + external graphics solution for desktop
platform
2. Features and benefits
1 : 2 multiplexing of DisplayPort (v1.1 - 2.7 Gbit/s) or PCI Express (v1.1 - 2.5 Gbit/s)
signals
4 high-speed differential channels
1 channel for AUX differential signals or DDC clock and data
1 channel for HPD
High-bandwidth analog pass-gate technology
Very low intra-pair differential skew (< 5 ps)
Very low inter-pair skew (< 180 ps)
All path delays matched including between RX1− to X− and RX1+ to X+
Switch/MUX position select with latch function
Shutdown mode CMOS input
Shutdown mode minimizes power consumption while switching all channels off
Very low operation current of 0.2 mA typ
Very low shutdown current of < 10
μA
Standby mode minimizes power consumption while switching all channels off
Single 3.3 V power supply
ESD 8 kV HBM, 1 kV CDM
Two pinouts (A and B) available as separate ordering part numbers
Available in 11 mm
×
5 mm HWQFN56R package
CBTL06121
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 26 October 2010
3 of 20
NXP Semiconductors
CBTL06121
Gen1 hex display multiplexer
3. Applications
Motherboard applications requiring DisplayPort and PCI Express
switching/multiplexing
Docking stations
Notebook computers
Chip sets requiring flexible allocation of PCI Express or DisplayPort I/O pins to board
connectors
4. Ordering information
Table 1.
Ordering information
Package
Name
CBTL06121AHF
[1][2]
CBTL06121BHF
[1][2]
[1]
[2]
[3]
Type number
Description
plastic thermal enhanced very very thin quad flat package; no leads;
56 terminals; resin based; body 11
×
5
×
0.7 mm
[3]
Version
SOT1033-1
HWQFN56R
The A and B suffix in the part number correspond to the A and B pinouts, respectively (see
Figure 5
and
Figure 6).
HF is the package designator for the HWQFN package.
Total height after printed circuit board mounting = 0.8 mm (max.).
CBTL06121
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 26 October 2010
4 of 20
NXP Semiconductors
CBTL06121
Gen1 hex display multiplexer
5. Functional diagram
MULTI-MODE
DISPLAY SOURCE
SEL
LE_N
XSD
MUX
LOGIC
CBTL06121
PCIe PHY
ELECTRICAL
PCIe
output buffer
AC-coupled
differential pair
DATA LANE
IN_0+
IN_0−
D0+
D0−
TX
TX0+
TX0−
AC-coupled
differential pair
DATA LANE
D1+
D1−
PCIe
output buffer
IN_1+
IN_1−
TX
TX1+
TX1−
AC-coupled
differential pair
DATA LANE
D2+
D2−
PCIe
output buffer
IN_2+
IN_2−
TX
TX2+
TX2−
AC-coupled
differential pair
DATA LANE
D3+
D3−
PCIe
output buffer
IN_3+
IN_3−
TX
TX3+
TX3−
HPD
PCIe
input buffer
X+
RX1+
X− to RX1− path matches
X+ to RX1+ path
RX
X−
SPARE
RX1−
PCIe
input buffer
AUX DATA
RX
AUX+
OUT+
OUT−
RX0+
RX0−
AUX−
TX
PEG CONNECTOR
OR
DOCKING CONNECTOR
002aad092
Fig 4.
CBTL06121
Functional diagram
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 26 October 2010
DP CONNECTOR
5 of 20
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