NT68520XF Datasheet, PDF (79/97 Pages) List of Unclassifed Manufacturers – XGA,SXGA Flat Panel Monitor Controller

Default: XXXX X010B
NT68520X,E
DE: Capture Horizontal Total Read Back - Low Byte (R)
Bits Name
D7-0 CAP_HTRB
[7:0]
Description
Read back the low byte value of input Hsync Total (Unit: DCLK) (for
debug)
Default: XXXX XXXXB
DF: Capture Horizontal Total Read Back - High Byte (R)
Bits Name
D7-6
D5-0 LCNT[13:8]
Description
Reserved
Read back the high byte value of input Hsync Total (Unit: DCLK) (for
debug)
Default: XXXX XXXXB
Index Port Access Control
E0H: Index Access Port (R/W)
Bits Name
D7-6 GAMA_SEL
D5-4 SRAM_AC
D3-2 PORT_AC
D1 PORT_RW
D0 INDEX [8]
Description
Gamma SRAM Select
00: Red Gamma Table
01: Green Gamma Table
10: Blue Gamma Table
11: R/G/B Gamma Tables modified simultaneously
SRAM Access Control
Controls different ways of updating the OSD SRAM.
00: Update SRAM code and attribute.
01: Update SRAM attribute only.
10: Update SRAM code only.
11: Update SRAM code from host and attribute from REG AAh.
Port Access Control
Specifies which set of memory to access.
00: Read/Write OSD SRAM.
01: Read/Write OSD Palette.
10: Read/Write OSD Programmable Font.
11: Read/Write Gamma SRAM.
Port Read/Write
0: Write
1: Read
Bit 8 of SRAM address for OSD. Bit 7-0 is in E1h
Default: 0000 0000B
E1H: Index Address Port (R/W)
Bits Name
D7-0 INDEX
[7:0]
Description
♦ OSD SRAM: Indexed by font
SRAM: Least significant 7 bits of the SRAM index.
2003/4/15
79
Ver.1.0