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**F87000   Multi-Mode Peripheral Chip                         11/23/93
***Info:
The F87000  Multi-Mode Peripheral  Chip is a  companion to  the F8680A
PC/CHIP single-chip PC. By strapping  pins to select the desired mode,
the F87000 device becomes one of four integrated peripheral chips that
extend the functionality of PC/CHIP.

Chips and Technologies, Inc. has designed the F87000 chip specifically
for use  with the F8680A  microchip to accommodate  portable computing
devices   and  embedded   control   applications  where   integration,
conservation of board space, and power consumption are critical.

In  PCMCIA  card  implementations,  card buffering  and  isolation  is
recommended for  design robustness,  especially in rugged  use enviro-
nments.  The buffering ensures that  the PCMCIA card receives a strong
clean  signal, while the  isolation provides  both the  protection for
"hot card insertion" and is hardwired for turning off power to a card.
Hardware isolation,  supported with Power  Management SuperState code,
minimizes the system’s power  consumption.  PCMCIA card slots that are
not properly buffered and isolated run  a high risk of a system crash/
failure if the cards are inserted/removed while the slot is powered.

The PC/CHIP F87000 is designed to be used in four modes. 
o    Mode 1 ---- Single PCMCIA card buffering support provides:
     • 20-bit address buffer.
     • 16-bit bidirectional data buffer.
     • Buffering for five control signals.
o    Modes 2 and 3 ---- Dual PCMCIA card buffering support provides:
     • Individual address buffering (64MB each).
     • Individual data bus buffering.
     • Two OR gates.
o    Mode 4 ---- Multifunctional mode provides:
     • Keyboard circuitry interfacing to a 16 x 8 keyboard matrix.
     • Clock divider conversion of 14.31818MHz to 1.8432MHz output 
       (divide by 7.77).
     • Parallel printer port.
     • IDE interface.
     • 7-bit configuration ports plus external select for port 
       expansion.

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**?????  (Profusion)    c:99
Chips:         
Memory Access Controller (MAC)  
Data Interface Buffer (DIB)
CPUs:          8x P-III Xeon Oct
DRAM Types:    SDRAM PC100 2-way Interleave dual channel
Max Mem:       32GB
ECC/Parity:    ECC
AGP speed:     N/A
Bus Speed:     100
PCI Clock/Bus: 1/3 PCI-66/64



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**SL9020  Data Controller                                       <oct88...
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