PC87334VJG Datasheet | National Semiconductor

PC87334VLJ PC87334VJG Super I O 3 3V 5V Floppy Disk Controller Dual UARTs Infrared IEEE1284 Parallel Port and IDE Interface PRELIMINARY March 1995 PC87334VLJ PC87334VJG Super I O TM 3 3V 5V Floppy Disk Controller Dual UARTs Infrared IEEE1284 Parallel Port and IDE Interface General Description The PC87334VLJ PC87334VJG is a single chip solution for most monly used I O peripherals in ISA EISA and Micro Channel based puters It incorporates a Floppy Disk Controller (FDC) two full featured UARTs an IEEE 1284 patible parallel port and all the necessary control logic for an IDE interface Standard PC-AT address decoding for all the peripherals and a set of configuration registers are also implemented in this highly integrated member of the Super I O family Advanced power management Features mixed voltage operation and integrated Serial-Infra Red (SIR) support makes the PC87334 an ideal choice for low-power and or portable personal puter applications The PC87334 FDC uses a high performance digital data separator eliminating the need for any external filter ponents It is fully patible with the PC8477 and incorporates a superset of DP8473 NEC m PD765 and N82077 floppy disk controller functions All popular 5 25 and 3 5 floppy drives including the 2 88 MB 3 5 floppy drive are supported In addition automatic media sense and 2 Mbps tape drive support are provided by the FDC The two UARTs are fully NS16450 and NS16550 patible Both ports support MIDI baud rates and one port also supports Ir DA and the HP SIR pliant signaling protocol The parallel port is fully IEEE 1284 level 2 patible The SPP (Standard Parallel Port) is fully patible with ISA EISA and Micro Channel parallel ports In addition to the SPP EPP (Enhanced Parallel Port) and ECP (Extended Capabilities Port) modes are supported by the parallel port All IDE control signals with DMA support are provided by the PC87334 Only external signal buffers are required to implement a plete IDE interface...