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SN75DP126DSRHUR Datasheet(PDF) 2 Page - Texas Instruments |
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SN75DP126DSRHUR Datasheet(HTML) 2 Page - Texas Instruments |
2 / 41 page GPU w/ Unified DDC & AUX Channels HPD AUX_SRCp AUX_SRCn SCL_SRC SDA_SRC GPU MAIN[3:0] IN[3:0] 4 diff 4 diff DP_OUT[3:0] HPD_SRC DP_HPD_SNK AUX_SNK CAD_SNK SN75DP126 1M Optional I2C interface may be used to fully configure output signal conditioning and EQ settings. 10kW resistors are recommended for RI2C. 100kW 100kW 3.3V 100kWresistors shall be placed on the AUX_SNK side to ensure proper device internal channel biasing, and to ensure the sink device identifies the source during power down conditions. SCL_CTL SDA_CTL I 2C RI2C RI2C 3.3V CAD CAD_SRC 4 diff TMDS_OUT[2:0] SCL_SNK SDA_SNK TMDS_CLK 2kW 3.3V AUX DDC 2kW SN75DP126 SLLSEA9A – FEBRUARY 2012 – REVISED MARCH 2012 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. DESCRIPTION (CONTINUED) The SN75DP126 offers separate AUX and DDC source interfaces that connect to the DisplayPort AUX sink channel and the HDMI DDC sink channel, that seamlessly interface to graphics processor (GPU) comprising separate DDC and AUX interfaces as well as GPUs with combined DDC/AUX. Other sideband circuits such as Hot Plug Detect (HPD) are optimized to reduce external components providing a seamless connection to Intel, AMD, and NVIDIA graphics processors. The SN75DP126 is optimized for mobile applications, and contains activity-detection circuitry on the DP++ Main Link input that transitions to a low-power Output Disable mode in the absence of a valid input signal. Other low power modes are supported, including a Standby mode with typical dissipation of ~2 mW when no video sink (for example, monitor) is connected. The device is characterized for an extended operational temperature range from 0°C to 85°C. TYPICAL IMPLEMENTATIONS The SN75DP126 supports graphics processors with unified AUX/DDC configurations, where the source AUX channel is multiplexed with the source DDC channel, as illustrated in Figure 1. Graphics processors with separate AUX and DDC channels (ie. non-unified) are also supported, where the separate channels are directly routed to the separate channels on the SN75DP126, maintaining the AC coupling on the AUX channel. In the non-unified configuration, it is recommended to implement 2-k Ω pull-up resistors on the source-side DDC channel. See Figure 2. Figure 1. GPU with a Unified AUX/DDC Configuration 2 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated Product Folder Link(s): SN75DP126 |
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