A product Line of
Diodes Incorporated
PI3DPX1202A
Low power DisplayPort 1.2 Redriver with DDC/AUX CH Switch
Description
PI3DPX1202A
is
DisplayPort 1.2 standard compliant, very
low power DP Redriver.
The device can read the Aux-channel Link Training (LT)
Swing and Pre-emphasis data between Transmitter and
Receiver, configure the output swing / Pre-emphasis, and
automatically calculates EQ based on Swing/Pre-emphasis
LT values through the built-in Aux listener. EQ can pro-
gram by the I2C serial interface.
The device can reduce signal jitter caused by transmission
line effects, and compensate for the PCB-related frequency
and switching-related loss to provide optimum DP perfor-
mance between the link.
Î
ESD HBM protection 2kV
Î
Package: 48-pin TQFN (7x7mm)
Typical Applications
Î
Notebook, AIO and Desktop PCs
Î
Graphic Cards
DP Mainlink(p/n)
DP++ Host
CPU
dGPU
DP1.2 Redriver
+ Aux/DDC Switch
DisplayPort
Connector
NoteBook PC DP++ Redriver
Aux-ch(p/n)
Features
Î
Dual mode DisplayPort Redriver, DP 1.2 Specification
compliant
Î
Support all 1.62 / 2.7 / 5.4 Gbps data rate with DDC/
Aux signal switching
Î
High speed inputs with internal 50 Ohm pull-down
Î
Ultra Low-power design
Î
Dual mode DisplayPort Input/Output with TMDS clock
Frequencies up to 340 MHz
Î
Aux Listener support link training and configure output
level, pre-emphasis setting during link initialization.
Aux Listener supports "sink Request test mode"
Î
Pseudo-adaptive equalization based on signal level and
pre-emphasis setting in Aux register
Î
CNTRL provides pin control EQ, Output Voltage Swing
and Pre-Emphasis
Î
DP and TMDS output mode selection with Cable
Detection pins
Î
Support Hot Plug Detect and Cable Detect function
Î
Individual lane power down automatically when no DP
signal present
Î
DP redriver enter power down state to reduce current
consumption when sink device deserted
Î
Power Supply : 3.3V
PI3DPX1202A
Document number: DS40115 Rev.2-1
Figure: NB Application Block Diagram
Ordering Information
Ordering
Code
Package
Package Type
Code
3.3V only power, Pb-free &
Green, 48-pin TQFN, Tray(Tape/
Reel)
Industrial Temperature
3.3V only power, Pb-free &
Green, 48-pin TQFN, Tape/Reel
3.3V only power, Pb-free &
Green, 48-pin TQFN, Tray(Tape/
Reel)
PI3DPX1202A2
ZB
ZBE(X)
PI3DPX1202A2
ZB
ZBIEX
PI3DPX1202A1
ZB
ZBE(X)
Suffix: I = Industrial Temperature, E = Pb-free and Green, X = Tape/Reel.
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PI3DPX1202A
2. General Information
2.1
Revision History
Changes
Release. Always Automatic EQ control through Aux channel listener or I2C programmable control mode support
Ch3: Functional description to simplify.
Ch4: Min temp changed 0 to -40 deg C for I-temp support. ICC measurement data updated with different Pre-
emphasis and Voltage swing setting condition.
Ch5: Add Aux-listener redriver latency information & power mW comparison data
Ch3: Improved Functional description
Power-up / Reset timing added in functional session
Eye waveforms by Pre channel length added in application session
Revision
Mar 2017
Apr 2017
May 2017
Jun 2017
2.2
Similar Products Selection Guide
PI3DPX1202A2
PI3DPX1202A1
DP 1.2, DP++1.2
PI3EQXDP1201 Pin-to-
pin replacement
PI3EQXDP1201
DP 1.2, DP++1.2
Not recommend
PI3DPX1203B
DP 1.4, DP++ 1.4
Variable Frame Rate ap-
plication, latency critical
system
DP1.4 Data Rate system
Linear-type Redriver
No need Aux listener for
Automatic Device setting
control
EQ setting 4-bit with Pin or
I2C mode.
None
Version
DP 1.2, DP++ 1.2
Recommenda- New DP 1.2 Design
tion
Power, BOM sensitive
system
Redriver Type
Limiting-type Redriver,
Depend Aux listener for
automatic Device setting
control
Auto, I2C and Fixed EQ
setting
Auto EQ pin: Tri-state
mode to control Auto EQ/
Fixed EQ and I2C mode
0: Disable
1: Enable
M: Pin-control EQ mode
Same as PI3DPX1202A1
Same as PI3DPX1202A1
EQ mode
Auto_EQ pin
Auto EQ, I2C setting
only
No Auto EQ pin control
pin. Internally Pull-Up
to VDD for always for
Pin-to-Pin with PI-
3EQXDP1201
Auto, I2C and Fixed EQ
setting
Internal 100kΩ pull up.
0 = Fixed EQ
1 = Auto EQ
New Features
Low-power design 136mA @ 400mV, 0dB setting.
Increase Aux Listener FIFO size.
Drop-in Pin out compatible with PI3EQXDP1201.
Production
Production
300mA @ 400mV, 0dB
setting
EOL
Latency Free, Not blocking
linked channels and boost
Receiver DFE performance
Production
Availability
PI3DPX1202A
Document number: DS40115 Rev.2-1
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A product Line of
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PI3DPX1202A
2.3
Power Consumption Comparison
x4 IDD
Improve
55%
38%
32%
26%
52%
34%
24%
40%
27%
36%
Swing, Preemph setting
400mV_0dB
400mV_3.5dB
400mV_6dB
400mV_9.5dB
600mV_0dB
600mV_3.5dB
600mV_6dB
800mV_0dB
800mV_3.5dB
1200mV_0dB
x4 Old
DP1201
309
338
358
390
321
381
388
332
396
351
x4 New
DPX1202
138
211
242
289
155
252
294
197
289
225
Units
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Power Consumption Comparison
450
400
350
300
250
200
150
100
50
0
60%
50%
40%
30%
20%
10%
0%
x4 IDD Improve
x4 Old DP1201
x4 New DPX1202
Average Total Current
Average Total Power
36%
36%
356
1175
229
756
mA
mW
2.4
Output Eye Waveforms with different Pre-channel length
Output Eye Opening with Input Equalization, 5.4 Gbps, Vdd=3.3V, 25C with PRBS 2^7-1 pattern, Input/Output Swing=800mVd
No Trace, EQ=0101 (2.25dB)
PreCH =6”, EQ=0101 (3.5dB)
PreCH =12”, EQ=1001 (4.6dB)
PreCH=18”, EQ=0001 (4.6dB)
PreCH=24”, EQ=1011 (6.1dB)
PreCH=30”, EQ=1011 (6.1dB)
PreCH=36”, EQ=1101 (8.2dB)
PreCH=42”, EQ=1101 (8.2dB)
Figure 2-1: Pre-channel length/insertion loss and EQ compensation
PI3DPX1202A
Document number: DS40115 Rev.2-1
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PI3DPX1202A
2.5
Related Products
Products Description
HDMI 2.0 and DP++ Retimer (Jitter Cleaner)
HDMI 1.4 and DP++ ReTimer (Jitter Cleaner)
DisplayPort 1.4 Redriver for Source/Sink/Cable Application, Linear-type
HDMI 2.0 Redriver (DP++ Level Shifter), High EQ, place near to the source-side, Limiting type
HDMI 2.0 Linear Redriver (DP++ Level Shifter) , Link transparent, place near to the sink-side
DisplayPort 1.4 Alt Type-C Redriver, 8.1 Gbps and USB3.1 10 Gbps, Link Transparent
Low Power DisplayPort 1.2 Redriver with built-in AUX Listener, Limiting-type
High EQ HDMI 1.4b Redriver and DP++ Level Shifter for Sink/Source Application, Limiting-type
DisplayPort 1.4 Alt Type-C Mux Redriver, 8.1 Gbps and USB3.1 10 Gbps, Link Transparent
HDMI 2.0 3:1 ports Mux Redriver, Linear-type
HDMI 1.4b 1:4 Demux Redriver & Splitter for 3.4 Gbps Application, Limiting-type
HDMI 1.4b 1:2 Demux Redriver & Splitter for 3.4 Gbps Application, Limiting-type
HDMI 1.4 Redriver 2:1 Active Switch with built-in ARC and Fast Switching support, Limiting-type
Part Numbers
Retimers
PI3HDX2711B
PI3HDX711B
Redrivers
PI3DPX1203B
PI3HDX1204B1
PI3HDX1204E
PI3DPX1207B
PI3DPX1202A
PI3HDX511F
PI3DPX1205A
PI3HDX231
PI3HDX414
PI3HDX412BD
PI3HDX621
2.6
Active Switches & Splitters
Product Status Definition
Definition
In Design
Engineering
Samples
Full Production
Not In Production
Datasheet contains the design specifications for product development. Specifications
may change in any manner without notice.
Datasheet contains preliminary data; supplementary data will be published at a later
date. Diodes Incorporated reserves the right to make changes at any time without no-
tice to improve design.
Datasheet contains final specifications. Diodes Incorporated reserves the right to make
changes at any time without notice to improve the design.
Datasheet contains specifications on a product that is discontinued by Diodes Incorpo-
rated. The datasheet is for reference information only.
Product Status
(1) Advanced
Information
(1) Preliminary
(2) No Identification
Needed
(3) Obsolete
PI3DPX1202A
Document number: DS40115 Rev.2-1
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A product Line of
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PI3DPX1202A
Contents
1. Product Summary
........................................................................................................................................................... 1
2. General Information
...................................................................................................................................................... 2
2.1 Revision History
.................................................................................................................................................... 2
2.2 Similar Products Selection Guide
..................................................................................................................... 2
2.3 Power Consumption Comparison
.................................................................................................................. 3
2.4 Output Eye Waveforms with different Pre-channel length
..................................................................... 3
2.5 Related Products
................................................................................................................................................... 4
2.6 Product Status Definition
................................................................................................................................... 4
3. Package Pin-out Information
..................................................................................................................................... 8
3.1 Package Pin-out
..................................................................................................................................................... 8
3.2 Pin Description
................................................................................................................................................... 10
4. Functional Description
............................................................................................................................................... 12
4.1 Block Diagram
..................................................................................................................................................... 12
4.2 Function Description
......................................................................................................................................... 13
4.3 SMBus Registers
.................................................................................................................................................. 19
4.4 DisplayPort AUX Listener
................................................................................................................................ 20
4.5 DPCD Aux Registers
......................................................................................................................................... 23
4.6 SMBus Programming
........................................................................................................................................ 28
5. Electrical Specification
................................................................................................................................................ 29
5.1 Absolute Maximum Ratings
............................................................................................................................ 29
5.2 Recommended Operating Conditions
.......................................................................................................... 29
5.3 Power Dissipation
............................................................................................................................................... 30
5.4 Electrical Characteristic
................................................................................................................................... 31
6. Application
...................................................................................................................................................................... 34
6.1 Application Circuit Diagrams
......................................................................................................................... 34
6.2 PCB Layout Guideline
....................................................................................................................................... 36
6.3 DisplayPort 1.2 Test Report
............................................................................................................................. 43
7. Mechanical/Packaging
................................................................................................................................................ 45
7.1 Package Mechanical Outline
............................................................................................................................ 45
7.2 Part Marking Information
................................................................................................................................ 47
7.3 Tape & Reel Materials and Design
................................................................................................................. 48
8. Important Notice
.......................................................................................................................................................... 51
PI3DPX1202A
Document number: DS40115 Rev.2-1
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