Texas Instruments DP130 Dual-Source Evaluation Module DP130DSEVM DP130DSEVM Datenbogen
Produktcode
DP130DSEVM
DP++ MultiMode Source Side Re-driver; GPU w/ Unified DDC & AUX Outputs;
AUX Channel Monitored for Link Training
AUX
HPD
A
U
X
S
N
K
-
A
U
X
S
N
K
+
SCL_CTL
SDA_CTL
SDA_CTL
GPU
MAIN[3:0]
D
P
c
o
n
n
e
c
to
r
IN[3:0]
4 diff
4 diff
OUT[3:0]
HPD_SRC
HPD_SNK
CAD
CAD_SNK
SCL-
SDA+
SN75DP130
100kW
100kW
3.3V
CAD
DDC
1M
CAD_SRC
CAD
CAD
Optional I
2
C interface may be used to
fully configure output signal
conditioning and EQ settings. 10kW
conditioning and EQ settings. 10kW
resistors are recommended for R
I2C
.
Minimize Stub Line Length
DP Only Source Side Re-driver; Buffered AUX Channel (no stub lines);
AUX Channel Monitored for Link Training
AUX-
AUX+
HPD
GPU
MAIN[3:0]
4 diff
SCL-
SDA+
100n
100n
R
I2C
R
I2C
3.3V
AUXSRC-
AUXSRC+
AUXSRC+
D
P
C
o
n
n
e
c
to
r
IN[3:0]
4 diff
OUT[3:0]
HPD_SRC
HPD_SNK
AUXSNK-
AUXSNK+
SN75DP130
100kW
100kW
3.3V
100kWresistors shall be placed on the AUXSNK side to
ensure proper device internal channel biasing, and to
ensure the sink device identifies the source during power
down conditions.
ensure the sink device identifies the source during power
down conditions.
SCL_CTL
SDA_CTL
SDA_CTL
Optional I
2
C interface may be used to fully
configure output signal conditioning and
EQ settings. 10kW resistors are
EQ settings. 10kW resistors are
recommended for R
I2C
.
CAD_SNK = V
IL
SLLSE57D – APRIL 2011 – REVISED JULY 2013
APPLICATION INFORMATION
ADDITIONAL TYPICAL IMPLEMENTATIONS
Theconfiguration shown in
is preferred to avoid very long AUX signal stub lines. Furthermore, this
configuration provides isolation between the DP connector and the GPU.
Figure 22. DP Only Configuration with AUX Pass Through
The configuration shown in
enables the SN75DP130 in DP++ Dual-Mode with the AUX input only
monitoring the AUX channel. Use this setting when AUX stub lines can be kept short and minimum AUX
attenuation is desired. For DP v1.1a, the stub length shall not exceed 4cm each, and for DP v1.2 with FAUX
support each stub line shall be shorter than 1cm.
attenuation is desired. For DP v1.1a, the stub length shall not exceed 4cm each, and for DP v1.2 with FAUX
support each stub line shall be shorter than 1cm.
Figure 23. DP++ Dual-Mode Configuration with AUX Monitor
The alternate configuration shown in
allows a reduced BOM by eliminating the need for external FET
switches while routing AUX and DDC externally, which eliminates any insertion loss cases of AUX is brought
through the SN75DP130. For DP v1.2 with FAUX support each stub line shall be shorter than 1cm.
through the SN75DP130. For DP v1.2 with FAUX support each stub line shall be shorter than 1cm.
20
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