SiS 301DH which is an accompany chip of SiS VGA chip, integrates

a. A NTSC/PAL video encoder with Macrovision Ver.7.1.L1 option for TV display.
b. An analog RGB port to support a secondary CRT monitor display.

All the above functions can support dual-display features. It means that the second display device driven by SiS301DH can display independent resolutions, color depths and frame rates different from the primary VGA chip. SiS301DH receives digital video signals and control signals from the primary VGA chip then transforms them into composite, S or component video output for TV display and analog RGB signals for secondary CRT display.

The package type of SiS301DH is 100-pin PQFP.