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GX1 Datasheet(PDF) 142 Page - National Semiconductor (TI) |
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GX1 Datasheet(HTML) 142 Page - National Semiconductor (TI) |
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142 / 247 page  www.national.com 142 Revision 1.0 Integrated Functions (Continued) 8328h-832Bh R/W DC_BUF_SIZE Display Controller Buffer Size: Specifies the number of bytes to transfer for a line of frame buffer data and the size of the compressed line buffer. (The compressed line buffer will be invalidated if it exceeds the CB_LINE_SIZE, bits [15:9].) xxxxxxxxh 832Ch-832Fh -- Reserved 00000000h Timing Registers 8330h-8333h R/W DC_H_TIMING_1 Display Controller Horizontal and Total Timing: Horizontal active and total timing information. xxxxxxxxh 8334h-8337h R/W DC_H_TIMING_2 Display Controller CRT Horizontal Blanking Timin: CRT horizontal blank timing information. xxxxxxxxh 8338h-833Bh R/W DC_H_TIMING_3 Display Controller CRT Sync Timing: CRT horizontal sync timing information. Note, how- ever, that this register should also be programmed appropriately for flat panel only display since the horizontal sync transition determines when to advance the vertical counter. xxxxxxxxh 833Ch-833Fh R/W DC_FP_H_TIMING Display Controller Flat Panel Horizontal Sync Timing: Horizontal sync timing information for an attached flat panel display. xxxxxxxxh 8340h-8343h R/W DC_V_TIMING_1 Display Controller Vertical and Total Timing: Vertical active and total timing information. The parameters pertain to both CRT and flat panel display. xxxxxxxxh 8344h-8247h R/W DC_V_TIMING_2 Display Controller CRT Vertical Blank Timing: Vertical blank timing information. xxxxxxxxh 8348h-834Bh R/W DC_V_TIMING_3 Display Controller CRT Vertical Sync Timing: CRT vertical sync timing information. xxxxxxxxh 834Ch-834Fh R/W DC_FP_V_TIMING Display Controller Flat Panel Vertical Sync Timing: Flat panel vertical sync timing information. xxxxxxxxh Cursor and Line Compare Registers 8350h-8353h R/W DC_CURSOR_X Display Controller Cursor X Position: X position information of the hardware cursor. xxxxxxxxh 8354h-8357h RO DC_V_LINE_CNT Display Controller Vertical Line Count: This read only register provides the current scanline for the display. It is used by software to time update of the frame buffer to avoid tearing arti- facts. xxxxxxxxh 8358h-835Bh R/W DC_CURSOR_Y Display Controller Cursor Y Position: Y position information of the hardware cursor. xxxxxxxxh 835Ch-835Fh R/W DC_SS_LINE_CMP Display Controller Split-Screen Line Compare: Contains the line count at which the lower screen begins in a VGA split-screen mode. xxxxxxxxh 8360h-8363h -- Reserved xxxxxxxxh 8364h-8367h -- Reserved xxxxxxxxh 8368h-836Bh -- Reserved xxxxxxxxh 836Ch-836Fh -- Reserved xxxxxxxxh Table 4-28. Display Controller Register Summary (Continued) GX_BASE+ Memory Offset Type Name/Function Default Value |
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