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TFP401 Datasheet(PDF) 15 Page - Texas Instruments |
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TFP401 Datasheet(HTML) 15 Page - Texas Instruments |
15 / 32 page HSYNC Shift by ± 1 Clock ODCK HSYNC IN DE HSYNC OUT 15 TFP401, TFP401A www.ti.com SLDS120G – MARCH 2000 – REVISED MAY 2016 Product Folder Links: TFP401 TFP401A Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Figure 17. HSYNC Regeneration Timing Diagram 9.4 Device Functional Modes 9.4.1 TFP401/401A Modes of Operation The TFP401/401A provides system design flexibility and value by providing the system designer with configurable options or modes of operation to support varying system architectures. Table 2 outlines the various panel modes that can be supported, along with appropriate external control pin settings. Table 2. TFP401/401A Modes of Operation PANEL PIXEL RATE ODCK LATCH EDGE ODCK DFO PIXS OCK_INV TFT or 16-bit DSTN 1 pix/clock Falling Free run 0 0 0 TFT or 16-bit DSTN 1 pix/clock Rising Free run 0 0 1 TFT 2 pix/clock Falling Free run 0 1 0 TFT 2 pix/clock Rising Free run 0 1 1 24-bit DSTN 1 pix/clock Falling Gated low 1 0 0 NONE 1 pix/clock Rising Gated low 1 0 1 24-bit DSTN 2 pix/clock Falling Gated low 1 1 0 24-bit DSTN 2 pix/clock Rising Gated low 1 1 1 9.4.2 TFP401/401A Output Driver Configurations The TFP401/401A provides flexibility by offering various output driver features that can be used to optimize power consumption, ground bounce, and power-supply noise. The following sections outline the output driver features and their effects. 9.4.2.1 Output Driver Power Down (PDO = low). Pulling PDO low places all the output drivers, except CTL1 and SCDT, into a high-impedance state. The SCDT output, which indicates link-disabled or link-inactive, can be tied directly to the PDO input to disable the output drivers when the link is inactive or when the cable is disconnected. An internal pullup on the PDO pin defaults the TFP401/401A to the normal nonpower-down output drive mode if left unconnected. 9.4.2.2 Drive Strength (ST = high for high drive strength, ST = low for low drive strength). The TFP401/401A allows for selectable output drive strength on the data, control, and ODCK outputs. See the DC Electrical Characteristics table for the values of IOH and IOL current drives for a given ST state. The high output drive strength offers approximately two times the drive as the low-output drive strength. |
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