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VGA Controller
The NeoMagic NM2160 is a PCI 128-bit Graphics Accelerator. The integrated program-
mable linear address feature accelerates the graphics user interface (GUI) performance.
The controller also supports Hardware Multimedia and VESA interface standards. The
controller provides advanced power management that helps to minimize power usage in
the following modes:
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normal operation
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Standby (sleep) mode
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panel off power saving modes.
Parallel Interface
The PC87338VJG chip is a 100-pin Thin Quad Flat Plastic (TQFP) chip. The controller
changes 8-bit parallel data into serial data and writes the data to the diskette. Conversely,
the serial data is transmitted from the diskette into parallel data, where it remains until the
read operation takes place.
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Additional PC87338VJG chip operations include:
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ISA compatibility
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low-power CMOS with enhanced power-down mode
Keyboard Controller
The keyboard controller (H8/3434) supports a PS/2-style keyboard and, mouse. Refer to
Appendix A for keyboard interface connector pin assignments.
When data is written to the output buffer, the controller generates an interrupt, and requests
the CPU to receive the data. The controller automatically adds an even parity bit to the data
sent and waits for a response. The device must acknowledge that the data was successfully
received by sending a response to the controller for each byte of data received.
PC CardBus Controller
The Texas Instruments PCI1131 controller interfaces with the PCI bus, PC CardBus socket
and configuration registers to provide:
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compliant with PCI 2.1 and 1995 PC card standards
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CardBus slots with hot insertion and removal
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independent Read and Write buffers for each direction
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burst transfers to maximize data throughput on the PCI CardBus bus.
Technical Information
1-17
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