Reply 20 of 37, by maxtherabbit
15kHz is a GO. Please note the device does have a minimum pixel clock, so 2x oversampling is required for 320x240 sources. 240p is working great and 480i seems to work to a degree as well. 240p is properly treated as progressive too, and it does not attempt to deinterlace it (confirmed with 240p test suite on Playstation 1)
PS before anyone asks about the aspect ratio: I simply left the extron on its default setting to fill the frame of its 1080p output. It's trivial to switch it to output a pillarboxed 4:3 image in a 1080p frame if desired.