iii
TP6508 Target Spec. List
Revision History ...............................................................................................................ii
I. General Description.................................................................................................... 1
II. Feature....................................................................................................................... 3
III. Pin Configurations................................................................................................... 5
ISA Bus Interface Connections ............................................................................................................. 5
PCI Local Bus Interface Connections ................................................................................................... 6
IV. Functional Block Diagram ....................................................................................... 7
System Block Diagram ......................................................................................................................... 7
VGA Block Diagram ............................................................................................................................ 8
True-Color Palette DAC Block Diagram.............................................................................................. 9
Dual Frequency Synthesizer Block Diagram....................................................................................... 10
Panel Controller Block Diagram ........................................................................................................ 11
Graphics Engine Diagram................................................................................................................... 12
Memory Configuration Block Diagram
V. Pin Descriptions........................................................................................................ 15
VI. Function Descriptions............................................................................................ 26
Host Bus Interface .............................................................................................................................. 26
Sequencer Controller (SEQC) ............................................................................................................ 26
CRT Controller (CRTC) ..................................................................................................................... 26
Attribute Controller (ATC) ................................................................................................................. 27
Graphics Controller (GFXC).............................................................................................................. 27
Address Multiplexer (AMUX) ........................................................................................................... 27
CRT FIFO (Display FIFO) ................................................................................................................. 28
Attribute FIFO .................................................................................................................................... 28
Write Buffer........................................................................................................................................ 28
Dual Frequency Synthesizer................................................................................................................ 28
True-Color Palette DAC (TDAC) ...................................................................................................... 29
Graphics Engine Controller (GEC) .................................................................................................... 29
Command FIFO .................................................................................................................................. 32
Hardware Cursor Controller .............................................................................................................. 32
PC Video Controller ........................................................................................................................... 33
LCD Line Buffer ................................................................................................................................. 33
Panel Controller ................................................................................................................................. 34
Power Management Controller (P.M.C.) ............................................................................................ 39
VII. Registers ................................................................................................................ 42
IBM Standard Register ....................................................................................................................... 42
Backward Compatible Register Description ...................................................................................... 48
Extended Sequencer Register Description.......................................................................................... 51
Extended CRTC Register Description ................................................................................................ 64
Panel Control Register Description .................................................................................................... 67
PCI Local Bus Configuration Register Description ............................................................................ 80
Graphics Engine Control Register Description................................................................................... 85
..................................................................... 13