CRT9021B Datasheet | SMSC

STANDARD MICROSYSTEMS CORPORATIO~N~_ _- J,1PC FAMILY CRT Video Attributes Controller VAC Features o On chip video shift register (28.5 MHz max.) o On chip attributes logic Reverse video Character blank Character blink Underline Full/half intensity o Four modes of operation Wide graphics Thin graphics Character mode without underline Character mode with underline o On Chip logic for double height/double width characters o Accepts scan line information in parallel or serial format o Four cursor modes dynamically selectable via 2 input pins Underline Blinking underline Reverse video Blinking reverse video o Programmable character blink rate o Programmable cursor blink rate PIN CONFIGURATION D0 1 MS0 2 MS1 3 REVID 4 CHABL 5 BLINK 6 INTIN 7 +5V 8 ATTEN 9 INTOUT 10 CURSOR 11 RETBL12 LD/SH 13 VIDEO 14 28 D1 27 D2 26 D3 25 D4 24 D5 23 D6 22 D7 21 VSYNC 20 GND 19 SL0/SLD 18 SL1/SLG 17 SL2/BLC 16 SL3/BKC 15 VDC PACKAGE 28-pin D.I.P. o On chip data and attribute latches o + 5 volt operation o TTL patible o MOS n-Channel silicon gate COPLAMOS® process M o patible with CRT 5037 VTAC®; CRT 9007 VPAC GENERAL DESCRIPTION The SMC CRT 9021 Video Attributes Controller line, re Verse video character block, and blinking (VAC) is an n-channel COPLAMOS MOS/LSI device reverse video character block. When used in the serial containing Graphics logic, attributes logic, data and scan line input mode, the cursor mode may be selected attributes latches, cursor control, and a high speed via two input pins. When used in the parallel scan line video shift register. The CRT 9021 , a character gen- input mode, the cursor mode is a mask program option erator ROM and a CRT controller such as the CRT and is fixed at the time of manufacture. 9007 provide all of the major circuitry for the display Two graphics modes are provided. In the wide portion of a CRT video terminal. graphics mode, the CRT 9021 produces a graphic The CRT 9021 serial video output may be con- entity...