Nec Versa Chip Set; Intel Pentium P55Clm Microprocessor; M-Triton System Controllers; Nec Versa Series Chip Types And Technologies - NEC Versa 6220 Service And Reference Manual

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1-18 Technical Information

NEC VERSA CHIP SET

Refer to Table 1-3 for a quick summary of chip types used in the system. See the Abbrevia-
tions section at the beginning of this manual for a translation of chip technologies.
Chip
Intel Pentium P55CLM Intel
82430TX (MTXC)
82371TX (PIIX4)
N28F020-150
NMG4
PC97338
M38813E
PC1131
ES1869

Intel Pentium P55CLM Microprocessor

The 200, 233 or 266 MHz Intel Pentium microprocessors with MMX technology used in
the NEC Versa 6220/30/60 computer is built on Intel's advanced 2.5V BiCMOS silicon
technology. The CPU has on-chip dual-processing, a local multiprocessor interrupt con-
troller, and power management features. NEC adopted the chip specifically for its pipelined
Floating Point Unit (FPU), and local interrupt management.

M-Triton System Controllers

NEC implements Intel's Mobile Triton technology (MTXC 83439TX) for the NEC Versa
6220/30/60 notebook's subsystems including the DRAM controller, Second Level Cache
Controller and PCI Bus interface. The Mobile Triton PCI set features include:
Table 1-3 NEC Versa Series Chip Types and Technologies
Manufacture
Intel
Intel
Intel
NeoMagic
National
Semiconductor
Mitsubishi
Texas Instruments
ESS Technologies
T
3.3V EDO DIMM (70-ns) support
T
direct mapped organization write-back policy
T
fully synchronous 33 MHz PCI bus interface.
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Description
200, 233 or 266 MHz CPU
M-Triton System Controller
M-PCI IDE ISA Xcelerator
256k x 8 Flash ROM
VGA Controller
Diskette Controller, IDE,
Parallel Interface
Keyboard Controller
PC Card Controller
Sound Controller
Technology
320-pin TCP
208-pin SQFP
176-pin TQFP
32-pin PLCC
208-pin FQFP
100-pin TQFP
64-pin TQFP
208-pin QFP
100-pin PQFP