iv
VIII. Absolute Maximum Rating ................................................................................ 96
IX. DC Electrical Characteristic ................................................................................. 97
DC Characteristics ............................................................................................................................. 97
DAC Characteristics........................................................................................................................... 98
DC Drive Characteristics ................................................................................................................... 98
X. AC Electrical Characteristic ................................................................................... 99
BIOS ROM Interface Timing SPEC.................................................................................................... 99
ISA Bus Interface Timing SPEC. ...................................................................................................... 100
PCI Local Bus Interface Timing SPEC. ............................................................................................ 101
Memory Bus Interface Timing SPEC. ............................................................................................... 102
Color-Key PC Video & VAFC Interface Timing ............................................................................... 104
RAMDAC & Feature Connector Interface Timing........................................................................... 104
XI. Timing Diagrams .................................................................................................. 105
BIOS ROM Read Cycle.................................................................................................................... 105
ISA Bus Interface Timing.................................................................................................................. 106
PCI Local Bus Interface Timing (32-bit data bus) ............................................................................ 107
16-Bit TXT CRT Cycle .................................................................................................................... 108
16-Bit CPU/GFX CRT/Shadow Frame Buffer Cycle ....................................................................... 109
32-Bit TXT CRT Cycle .................................................................................................................... 110
32-Bit CPU/GFX CRT/Shadow Frame Buffer Cycle ........................................................................111
16-Bit Read-Modify-Write Cycle..................................................................................................... 112
32-Bit Read-Modify-Write Cycle..................................................................................................... 113
Refresh Cycle Cycle(CAS Before RAS) .......................................................................................... 114
External Frame Buffer Interface Timing (16-bit) .............................................................................. 115
RAMDAC & Feature Connector Interface Timing........................................................................... 116
Color-Key PC Video & VAFC Interface Timing ............................................................................... 117
XII. Appendix.............................................................................................................. 118
A. Monitor Specification .................................................................................................................. 118
B. TP6508 VGA Modes ................................................................................................................... 119
C. Rast Operation Code List............................................................................................................. 121
D. Memory Address Table ............................................................................................................... 124
E. MCLK & VCLK Frequency Programming Table.......................................................................... 129
F. Pins Selection Configuration......................................................................................................... 131