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.
Table 1-3 NEC Versa Series Chip Types and Technologies
Chip
Manufacture
Description
Technology
Intel Pentium P55CLM Intel
200, 233 or 266 MHz CPU
320-pin TCP
82430TX (MTXC)
Intel
M-Triton System Controller
208-pin SQFP
82371TX (PIIX4)
Intel
M-PCI IDE ISA Xcelerator
176-pin TQFP
N28F020-150
Intel
256k x 8 Flash ROM
32-pin PLCC
NMG4
NeoMagic
VGA Controller
208-pin FQFP
PC97338
National
Semiconductor
Diskette Controller, IDE,
Parallel Interface
100-pin TQFP
M38813E
Mitsubishi
Keyboard Controller
64-pin TQFP
PC1131
Texas Instruments
PC Card Controller
208-pin QFP
ES1869
ESS Technologies
Sound Controller
100-pin PQFP
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:
3.3V EDO DIMM (70-ns) support
direct mapped organization write-back policy
fully synchronous 33 MHz PCI bus interface.
