描述 Description

GENERAL DESCRIPTION
The PCB8517 is a stand-alone OSD which is used to display the adjustment/status information on the screen of an auto-sync monitor for menu driving application.FEATURES
Interface with microcontroller
? 3-wire high speed (maximum 2.5 Mbits/s) serial interface with three types of transmission sequence.On-Screen Display (OSD)
? On-chip PLL oscillator to generate the OSD dot clock frequency which is 384 × horizontal sync frequency
? Horizontal sync frequency range of 10 to 100 kHz
? 10 rows of 24 characters display buffer
? 128 character fonts
? 12 × 16 character matrix
? Programmable height of displayed character (from 16 to 63 scan-lines); frame basis
? 4 types of character size; single/double character height/width; row basis
? Horizontal starting position: 32 different positions
? (6 dots for each step)
? Vertical starting position: 64 different positions
? (4 scan-lines for each step)
? 8 foreground character colours: selection of only 2 out of the 8 (outside the window) and 4 out of the of 8 (in thewindow) in the same row
? 3 character shadowing modes:
?? – No shadow
?? – Shadowing
?? – Bordering shadow
? 3 fully programmable background windows with overlapping capability and presetting priorities (for multi-level application). The window colour can be selected from 1 out of 8
? Half tone in background window supported
? Single 5 V power supply
? Available in DIP16 package.

特性 Features

Interface with microcontroller
? 3-wire high speed (maximum 2.5 Mbits/s) serial interface with three types of transmission sequence.On-Screen Display (OSD)
? On-chip PLL oscillator to generate the OSD dot clock frequency which is 384 × horizontal sync frequency
? Horizontal sync frequency range of 10 to 100 kHz
? 10 rows of 24 characters display buffer
? 128 character fonts
? 12 × 16 character matrix
? Programmable height of displayed character (from 16 to 63 scan-lines); frame basis
? 4 types of character size; single/double character height/width; row basis
? Horizontal starting position: 32 different positions
? (6 dots for each step)
? Vertical starting position: 64 different positions
? (4 scan-lines for each step)
? 8 foreground character colours: selection of only 2 out of the 8 (outside the window) and 4 out of the of 8 (in thewindow) in the same row
? 3 character shadowing modes:
?? – No shadow
?? – Shadowing
?? – Bordering shadow
? 3 fully programmable background windows with overlapping capability and presetting priorities (for multi-level application). The window colour can be selected from 1 out of 8
? Half tone in background window supported
? Single 5 V power supply
? Available in DIP16 package.?