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PC87334VLJ Datasheet(PDF) 2 Page - National Semiconductor (TI) |
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PC87334VLJ Datasheet(HTML) 2 Page - National Semiconductor (TI) |
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2 / 102 page  General Description (Continued) A set of eight configuration registers are provided to control various functions of the PC87334 These registers are ac- cessed using two 8-bit wide index and data registers The ISA IO address of the register pair can be relocated using a power-up strapping option When idle advanced power management features allows the PC87334 to enter extremely low power modes under hardware or software control The PC87334 can operate from a 5V or a 33V power supply An unique IO cell struc- ture allows the PC87334 to interface directly with 5V exter- nal components while operating from a 33V power supply Features (Continued) Y The UARTs Software compatible with the PC16550A and PC16450 MIDI baud rate support Infrared support on UART2 (IrDA-compliant) Y The IDE Control Logic All IDE control signals with DMA support provided Only external signal buffers required to implement full IDE interface Y The Address Decoder Provides selection of all primary and secondary ISA addresses including COM1 – 4 and LPT1 – 3 Y Enhanced Power Management Special configuration registers for power-down Enhanced programmable power-down FDC command Auto power-down and wake-up modes 3 special pins for power management Typical current consumption during power-down is less than 10 mA Reduced pin leakage current Y Mixed Voltage Support Supports standard 5V operation Supports 33V operation Supports mixed internal 33V operation with 33V5V external configuration Y 100-Pin TQFP packagePC87334VJG Y 100-Pin PQFP packagePC87334VLJ 2 |
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