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GXM Datasheet(PDF) 137 Page - National Semiconductor (TI) |
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GXM Datasheet(HTML) 137 Page - National Semiconductor (TI) |
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137 / 244 page  Revision 3.1 137 www.national.com Integrated Functions (Continued) 8314h-8317h R/W DC_CB_ST_OFFSET Display Controller Compression Buffer Start Address — Specifies offset at which the com- pressed display buffer starts. xxxxxxxxh 8318h-831Bh R/W DC_CURS_ST_OFFSET Display Controller Cursor Buffer Start Address — Specifies offset at which the cursor mem- ory buffer starts. xxxxxxxxh 831Ch-831Fh -- Reserved 00000000h 8320h-8323h R/W DC_VID_ST_OFFSET Display Controller Video Start Address — Specifies offset at which the video buffer starts. xxxxxxxxh 8324h-8327h R/W DC_LINE_DELTA Display Controller Line Delta — Stores line delta for the graphics display buffers. xxxxxxxxh 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. 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 Timing — CRT horizontal blank timing information. xxxxxxxxh 8338h-833Bh R/W DC_H_TIMING_3 Display Controller CRT Sync Timing — CRT horizontal sync timing information. 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 scan- line for the display. It is used by software to time update of the frame buffer to avoid tearing artifacts. 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 Table 4-29. Display Controller Register Summary (Continued) GX_BASE+ Memory Offset Type Name/Function Default Value |
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