SN75DP122A
www.ti.com............................................................................................................................................................................................ SLLS939–NOVEMBER 2008
DisplayPort 1:2 Switch With Integrated TMDS Translator
1
FEATURES
•
One Input Port to One of Two Output Ports
–
–
12 kV on all High Speed Pins
•
Integrated TMDS Level Translator with
Receiver Equalization
8 kV on all Auxiliary and I2C Pins
•
•
Enhanced Commercial Temperature Range:
0°C to 85°C
•
•
•
DP Port Supports Data Rates up to 2.7 Gbps
DP Port Supports Dual-Mode DisplayPort
56 Pin 8 × 8 QFN Package
DP Port Output Waveform Mimics Input
Waveform Characteristics
APPLICATIONS
•
Personal Computer Market
•
•
•
TMDS Port Supports Data Rates up to 2.5
Gbps
Integrated I2C Logic Block for DVI/HDMI
Connector Recognition
–
–
–
–
Desktop PC
Notebook PC
Docking Station
Standalone Video Card
Enhanced ESD:
DESCRIPTION
The SN75DP122A is a one Dual-Mode DisplayPort input to one Dual-Mode DisplayPort output or one TMDS
output. The TMDS output has a built in level translator compliant with Digital Video Interface (DVI) 1.0 and High
Definition Multimedia Interface (HDMI) 1.3b. The DisplayPort output follows the input signal in a manner that
provides the highest level of signal integrity while supporting the EMI benefits of spread spectrum clocking.
Through the SN75DP122A data rates of up to 2.7 Gbps through each link for a total throughput of up to 10.8
Gbps can be realized. The SN75DP122A supports Display Port Spec 1.1a
In addition to the switching of the DisplayPort high speed signal lines, the SN75DP122A also supports the
switching of the bidirectional auxiliary (AUX), Hot Plug Detect (HPD), and Cable Adapter Detect (CAD) channels.
The Auxiliary differential pair supports Dual-Mode DisplayPort operation through the DisplayPort port. Through
the TMDS port the auxiliary port is configured as an I2C port with an integrated I2C repeater.
The SN75DP122A is characterized for operation over ambient air temperature of 0°C to 85°C.
TYPICAL APPLICATION
DisplayPort
Enabled
Monitor or HDTV
DP++
DP++
GPU
SN75DP122A
TMDS
HDMI / DVI
Monitor or HDTV
Computer/Notebook/Docking Station
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.