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PI3DPX1202A Datasheet(PDF) 24 Page - Diodes Incorporated

Part # PI3DPX1202A
Description  Low power DisplayPort 1.2 Redriver with DDC/AUX CH Switch
PDF  51 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

PI3DPX1202A Datasheet(HTML) 24 Page - Diodes Incorporated

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PI3DPX1202A
A product Line of
Diodes Incorporated
24 of 51
www.diodes.com
September 2017
© Diodes Incorporated
PI3DPX1202A
Document number: DS40115 Rev.2-1
SMBus
Registers
AUX
Registers
Description
Default
value
DP Ac-
cess
0x04
DPCD Lane 0 status
Aux operation
00103h
TRAINING_LANE0_SET
Link Training Control_Lane0
Bits1:0 = DRIVE_CURRENT_SET
00 – Training Pattern 1 w/ drive current level 1
01 – Training Pattern 1 w/ drive current level 2
10 – Training Pattern 1 w/ drive current level 3
11 – Training Pattern 1 w/ drive current level 4
Bit2 = MAX_CURRENT_REACHED
Set to 1 when the maximum driven current setting is reached.
Note: Support of programmable drive current is optional. For example if there is only 1
level, then program Bits2:0 to 100 to indicate to the receiver that Level 1 is the maximum
drive current. Support of independent drive current controlfor each lane is also optional.
Bit4:3 = PRE-EMPHASIS_SET
00 = Training Pattern 2 w/o pre-emphasis
01 = Training Pattern 2 w/ pre-emphasis level 1
10 = Training Pattern 2 w/ pre-emphasis level 2
11 = Training Pattern 2 w/ pre-emphasis level 3
Bit5 = MAX_PRE-EMPHASIS_REACHED
00h
R/W
0x05
DPCD Lane 1 status
Aux operation
00104h
Lane setting for lane 1.
The definition is the same as lane 0
00h
R/W
0x06
DPCD Lane 2 status
Aux operation
00105h
Lane setting for lane 2.
The definition is the same as lane 0
00h
R/W
0x07
DPCD Lane 3 status
Aux operation
00106h
Lane setting for lane 3.
The definition is the same as lane 0
00h
R/W
0x08
00107h
DOWNSPREAD_CTRL : Down-spreading control
Bit 3:0 = RESERVED. Read all 0’s
Bits 4 = SPREAD_AMP Spreading amplitude
0 = No downspread
1 = Equal to or less than 0.5% down spread
Bit 7:5 = RESERVED. Read all 0’s.
Note: Write 00h to declare to the receiver that there is no down-spreading. The modulation
frequency must be in the range of 30kHz ~ 33kHz
00h
R/W



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