VT8601 Apollo ProMedia
Revision 1.3 September 8, 1999
-1-
Features
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VIA VT8601
APOLLO PROMEDIA
66 / 100 / 133 MHz
Single-Chip Slot-1 / Socket-370 PCI North Bridge,
With Integrated AGP 2D / 3D Graphics Accelerator
and Advanced Memory Controller
supporting PC100 / PC133 and VCM SDRAM
For Desktop PC Systems
• General
− 510 BGA Package (35mm x 35mm )
− 2.5 Volt core with 3.3V CMOS I/O
− Supports GTL+ I/O buffer Host interface
− Supports separately powered 5.0V tolerant interface to PCI bus and Video interface
− 2.5V, 0.25um, high speed / low power CMOS process
− PC98 / 99 compatible using VIA VT82C686A (352-pin BGA) south bridge chip for Desktop and Mobile
applications
− 66 / 100 / 133 MHz CPU Front Side Bus (FSB) Operation
• High Integration
− Single chip implementation for 64-bit Slot-1 and Socket-370 CPUs, 64-bit system memory, 32-bit PCI with
integrated 2D / 3D GUI accelerator
− Apollo ProMedia Chipset: VT8601 system controller and VT82C686A PCI to ISA bridge
− Chipset includes dual UltraDMA-33/66 EIDE, AC-97 link, 4 USB ports, integrated Super-I/O, hardware monitoring,
keyboard / mouse interfaces, and RTC / CMOS
• High Performance CPU Interface
− Supports Slot-1Intel Pentium IITM / Pentium IIITM and Socket-370 CeleronTM processors
− 66 / 100 / 133 MHz CPU Front Side Bus (FSB)
− Built-in PLL (Phase Lock Loop) circuitry for optimal skew control within and between clocking regions
− Five outstanding transactions (four In-Order Queue (IOQ) plus one input latch)
− Supports WC (Write Combining) cycles
− Dynamic deferred transaction support
− Sleep mode support
− System management interrupt, memory remap and STPCLK mechanism
CPU
DRAM
GUI Core
Internal AGP
PCI
Comments
133 MHz
133 MHz
100 MHz
66 MHz
33 MHz
Synchronous (DRAM uses CPU clock)
133 MHz
100 MHz
100 MHz
66 MHz
33 MHz
Pseudo-synchronous (DRAM uses GUI clock)
100 MHz
133 MHz
100 MHz
66 MHz
33 MHz
Pseudo-synchronous (DRAM uses GUI clock)
100 MHz
100 MHz
100 MHz
66 MHz
33 MHz
Synchronous (DRAM uses CPU clock)
100 MHz
66 MHz
66 MHz
66 MHz
33 MHz
Pseudo-synchronous (DRAM uses GUI clock)
66 MHz
100 MHz
100 MHz
66 MHz
33 MHz
Pseudo-synchronous (DRAM uses GUI clock)
66 MHz
66 MHz
66 MHz
66 MHz
33 MHz
Synchronous (DRAM uses CPU clock)
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