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BDM-610000082 Rev A Chapter 3: Connecting the cpuModule 33
DisplayPort Connector (CN19)
The DisplayPort connector on the CMX34GS cpuModule is a standard PC DisplayPort connector complete with
latch holes to provide a rugged connecting solution for latching DisplayPort cables.
The DisplayPort supports all mandatory features of the VESA DisplayPort Standard (Version 1.1a), permits a
maximum resolution of 1920x1200, and supports up to 8 channels of audio out the connector. Full bandwidth
transmission is supported over a two meter cable, with reduced bandwidth transmission supported up to a
length of 15 meters.
The connection supports Dual-Mode DisplayPort (also know as DisplayPort++, sometimes abbreviated as
DP++), and can directly output single-link HDMI and DVI signals by using a simple passive adapter. Passive
adapters acheive HDMI and DVI signaling by adjusting the lower signal levels output by the connector.
Table 12 provides the pinout of the DisplayPort connector.
Table 12 DisplayPort Connector (CN19)
Pin Signal Standard Function Dual-mode (DP++) Function
(DVI / HDMI mode)
1
1. Requires special passive adapter
In/Out
1 LN0+ Main Link, Lane 0 (positive) TMDS Channel 2 (positive) out
2 GND Ground Ground out
3 LN0- Main Link, Lane 0 (negative) TMDS Channel 2 (negative) out
4 LN1+ Main Link, Lane 1 (positive) TMDS Channel 1 (positive) out
5 GND Ground Ground out
6 LN1- Main Link, Lane 1 (negative) TMDS Channel 1 (negative) out
7 LN2+ Main Link, Lane 2 (positive) TMDS Channel 0 (positive) out
8 GND Ground Ground out
9 LN2- Main Link, Lane 2 (negative) TMDS Channel 0 (negative) out
10 LN3+ Main Link, Lane 3 (positive) TMDS Clock (positive) out
11 GND Ground Ground out
12 LN3- Main Link, Lane 3 (negative) TMDS Clock (negative) out
13 CFG1 Configuration Pin 1 Cable Adapter Detect out
14 CFG2 Configuration Pin 2 Consumer Electronics Control
2
2. HDMI mode only
out
15 AUX+ Auxiliary Channel (positive) DDC Clock in/out
16 GND Ground Ground out
17 AUX- Auxiliary Channel (negative) DDC Data in/out
18 HPD Hot Plug Detect Hot Plug Detect in
19 DPG Return for DPV Return for DPV out
20 DPV +3.3V DC Power +3.3V DC Power out