PC97338  Product Folder

The PC97338 is a fully ACPI 1.0 and PC98/PC99 compliant, ISA based Super I/O. It is functionally compatible with the PC87338. It includes a Floppy Disk Controller (FDC), two Serial Communication Controllers (SCC) for UART and Infrared support, one IEEE1284 compatible Parallel Port, and two general purpose Chip Select signals for game port support. The device supports power management as well as 3.3V and 5V mixed operation making it particularly suitable for notebook and sub-notebook applications.

The PC87338 and PC97338 are fully compliant to the Plug and Play specifications included in the "Hardware Design Guide for Microsoft Windows 95".

Differences between the PC87338 and PC97338 are indicated in italics. These differences are summarized in Appendix A.

• Meets ACPI 1.0 and PC98/PC99 requirements
• Backward compatible with PC87338
• 100% compatibility with Plug and Play requirements specified in the "Hardware Design Guide for Microsoft Windows 95", ISA, EISA, and MicroChannel architectures
• A special Plug and Play module includes:
• - Flexible IRQs, DMAs and base addresses
• - General Interrupt Requests (IRQs) that can be multiplexed to the ten supported IRQs
• A new, high performance, on-chip Floppy Disk Controller (FDC) provides:
• - Software compatibility with the PC8477, which contains a superset of the floppy disk controller functions in the mDP8473, the NEC mPD765A and the N82077
• - A modifiable 13-bit address
• - Ten IRQ channel options
• - Four 8-bit DMA channel options
• - 16-byte FIFO
• - Burst and non-burst modes
• - Low-power CMOS with enhanced power-down mode
• - A new, high-performance, on-chip, digital data separator without external filter components
• - Support for 5.25"/3.5" floppy disk drives
• - Automatic media sense support
• - Perpendicular recording drive support
• - Three mode Floppy Disk Drive (FDD) support
• - Full support for IBM's Tape Drive Register (TDR) implementation
• - Support for new fast tape drives (2 Mbps) and standard tape drives (1 Mbps, 500 Kbps and 250 Kbps)
• - Support for both FM and MFM modes.
• - Two Serial Communication Controllers provide:
• - Software compatibility with the 16550A and the 16450
• - A modifiable 13-bit address
• - Ten IRQ channel options
• - MIDI baud rate support
• - Four 8-bit DMA channel options on SCC2
• - Shadow register support UART write-only bits
• A fast universal Infrared interface on SCC2 supports the following:
• - Data rates of up to 115.2 Kbps (SIR)
• - A data rate of 1.152 Mbps (MIR)
• - A data rate of 4.0 Mbps (FIR)
• - Selectable internal or external modulation/demodulation (Sharp-IR)
• - Consumer Electronic IR mode
• A bidirectional parallel port that includes:
• - A modifiable 13-bit address
• - Ten IRQ channel options
• - Four 8-bit DMA channel options
• - An Enhanced Parallel Port (EPP) compatible with version EPP 1.9 (IEEE1284 compliant), that also supports version EPP 1.7 of the Xircom specification.
• - An Extended Capabilities Port (ECP) that is IEEE1284 compliant, including level 2
• - Bidirectional data transfer under either software or hardware control
• - Compatibility with ISA, EISA, and MicroChannel parallel ports
• - Multiplexing of additional external FDC signals on parallel port pins that enables use of an external Floppy Disk Drive (FDD)
• - A protection circuit that prevents damage to the parallel port when an external printer powers up or operates at high voltages
14 mA output drivers
• Two general purpose pins for two programmable chip select signals can be programmed for game port control.
• An address decoder that:
• - Selects all primary and secondary ISA addresses, including COM1-4 and LPT1-3
• - Decodes up to 16 address bits
• Clock source:
• - An internal clock multiplier generates all required internal frequencies.
• - A clock input source 14.318 MHz, 24 MHz, or 48 MHz may be selected
• Enhanced power management features:
• - Special power-down configuration registers
• - Enhanced programmable FDC command to trigger power down
• - Programmable power-down and wake-up modes
• - Two dedicated pins for FDC power management
• - Low power-down current consumption (typically for PC97338, 200 mA for 3.3V and 400 mA for 5V application)
• - Reduced pin leakage current
• - Low power CMOS technology
• - The ability to shut off clocks to either the entire chip or only to specific modules
• Mixed voltage support provides:
• - Standard 5V operation
• - Low voltage 3.3V operation
• - Simultaneous internal 3.3V operation and reception or transmission to devices that have either 3.3V or 5V power supply
• 100-pin TQFP VJG package - PC87338/PC97338
• 100-pin PQFP VLJ package - PC87338/PC97338