Versa 5000 Series Service and Reference Manual - Support
Versa 5000 Series Service and Reference Manual - Support
Versa 5000 Series Service and Reference Manual - Support
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Technical Information 1-17<br />
VGA Controller<br />
The NeoMagic NM2160 is a PCI 128-bit Graphics Accelerator. The integrated programmable<br />
linear address feature accelerates the graphics user interface (GUI) performance.<br />
The controller also supports Hardware Multimedia <strong>and</strong> VESA interface st<strong>and</strong>ards. The<br />
controller provides advanced power management that helps to minimize power usage in<br />
the following modes:<br />
„ normal operation<br />
„ St<strong>and</strong>by (sleep) mode<br />
„ panel off power saving modes.<br />
Parallel Interface<br />
The PC87338VJG chip is a 100-pin Thin Quad Flat Plastic (TQFP) chip. The controller<br />
changes 8-bit parallel data into serial data <strong>and</strong> writes the data to the diskette. Conversely,<br />
the serial data is transmitted from the diskette into parallel data, where it remains until the<br />
read operation takes place.<br />
„ Additional PC87338VJG chip operations include:<br />
„ ISA compatibility<br />
„ low-power CMOS with enhanced power-down mode<br />
Keyboard Controller<br />
The keyboard controller (H8/3434) supports a PS/2-style keyboard <strong>and</strong>, mouse. Refer to<br />
Appendix A for keyboard interface connector pin assignments.<br />
When data is written to the output buffer, the controller generates an interrupt, <strong>and</strong> requests<br />
the CPU to receive the data. The controller automatically adds an even parity bit to the data<br />
sent <strong>and</strong> waits for a response. The device must acknowledge that the data was successfully<br />
received by sending a response to the controller for each byte of data received.<br />
PC CardBus Controller<br />
The Texas Instruments PCI1131 controller interfaces with the PCI bus, PC CardBus socket<br />
<strong>and</strong> configuration registers to provide:<br />
„ compliant with PCI 2.1 <strong>and</strong> 1995 PC card st<strong>and</strong>ards<br />
„ CardBus slots with hot insertion <strong>and</strong> removal<br />
„ independent Read <strong>and</strong> Write buffers for each direction<br />
„ burst transfers to maximize data throughput on the PCI CardBus bus.