Texas Instruments DP159RGZ, Руководство пользователя

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Hardware Description
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6 SLLU225A – August 2015 – Revised March 2018
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DP159RGZ Evaluation Module
Table 1. Jumper Settings (continued)
Jumper Signal Name Description Default Config
J16 CEC_EN JP 1-2 for DP159 thru HDMI NC
JP 2-3 for NOT USED
NC for DP159
J17 SWAP/POL JP 1-2 for Polarity Swap NC
JP 2-3 for Lane Swap
NC for No Swap
2.5 Component Population Configuration
To allow the DP159RGZEVM to support both the default DP input as well as a HDMI test input, there are
many components that need to be removed, placed, or modified depending on the board configuration.
Here’s a summary of the default component configuration for the DP159RGZEVM. In addition, the unused
HDMI receptacle is depopulated.
Function Reference Designator DP159RGZEVM
Differential Pair - IN C11, C12, C13, C14, C15, C16, C24,
C25 populated with 0.1 µF
Differential Pair - HDMI IN R14, R15, R18, R19, R20, R21, R22,
R23 not populated
SDA / SCL - HDMI R16, R17, R24, R25, R123, R124 not populated
Differential Pair - DP IN R112, R109, R111, R108, R110, R107,
R106, R105 populated with 0
Ω
SDA / SCL / HPD - DP R33, R31, R32 (R126, R135, R132,
R133 - snoop) populated with 0 Ω
Pullup Differential Pair HDMI IN R1, R2, R3, R4, R6, R7, R8, R9 populated, but not
connected
2.5.1 HPD Snoop Option
To accommodate systems that do not properly resend DDC commands after HPD goes low, we have
implemented a HPD snoop mode on the DP159RGZEVM. This mode allows the HPD line to be routed
around the DP159, but remain connected to the DP159 on the sink side to allow the DP159 to snoop its
state. This snoop mode is disabled by default on the DP159RGZEVMs.
• Pop R131, no pop R129, R130, R139 for HPD on
• No pop R131, pop R129, R130, R139 for HPD snoop only
2.5.2 DDC Snoop Option – not Available for DP159RGZ REV B
To accommodate systems that do not properly support clock stretching on the DDC lines, we have
implemented a snoop mode on the DP159RGZEVM. This mode allows the DDC lines to be routed around
the DP159RGZ, but remain connected to the DP159RGZ on the sink side to allow the DP159RGZ to
snoop the DDC traffic. This snoop mode is enabled by default on the DP159RGZ REV B1 EVMs.
• Pop R126, R125, R132, R133. No pop R31, R32 – DP159RGZ, DDC snoop only
• Pop R31, R32. No pop R126, R125, R132, R133 – DP159RGZ, DDC on