HT6550A

HT6550A Super I/O Controller Features 100% compatible to IBM PC AT Fully uPD765b and IBM–BIOS compatible floppy disk controller – 48mA floppy drive interface buffers – Support two floppy drives with capability of supporting up to four drives with an external decoder – Support 360K/720K/1.2M/1.44M formats – Support 250Kb/s, 300Kb/s, 500Kb/s data rate Digital data separator eliminates critical analog adjustments Two 16450/8250 compatible UARTs – Independent control of transmit,receive,line status and data set interrupts on each channel – Individual modem control signals for each channel – Programmable serial interface characteristics for each channel: Applications Super (Multi) I/O interface card – # 5-, 6-, 7-, or 8-bit characters – # Even,odd or no parity bit generation and detection – # 1-, 1.5-, or 2-stop bit generation – Programmable baud rate generator for each channel which allows division of the timing reference clock input by 1 to (216–1) Only one 24MHz crystal for FDC and UARTs One IBM PC AT bidirection parallel port for printer One parallel bus mouse compatible to IBM, Logitech and Zwix Bus Mouse Support AT full function Game Port Support AT hard disk IDE interface Hardware/software configuration setup available Individual disable feature available Power saving feature available 100 pin PQFP package 1 11th Aug ’95 HT6550A General Description The HT6550A super Multi I/O chip, is an advanced CMOS single chip controller offering the com...