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KT133 - VT8363
VIA VT8363
KT133 AMD ATHLON™ NORTH BRIDGE
Single-Chip North Bridge
for Socket-A (Socket-462) Based Athlon CPUs
with 200 MHz Front Side Bus
for Desktop PC Systems
with AGP 4x and PCI
plus Advanced Memory Controller
supporting PC133 / PC100 SDRAM and VCM
• High Performance and High Integration Athlon AGP 4x / PC133 Chipset with Advanced System
Power Management
− KT133 Chipset: VT8363 system controller and VT82C686A PCI to ISA bridge
− Single chip Athlon system controller with 64-bit Socket-A Athlon CPU, 64-bit system memory, 32-bit PCI and 32-
bit AGP interfaces
− PCI-to-ISA bridge chip includes UltraDMA-33/66 EIDE, 4 USB Ports, Integrated Super-I/O, AC97 / MC97 link (for
Audio and Modem support), Hardware Monitoring, Power Management, and Keyboard / PS2-Mouse Interfaces plus
RTC / CMOS on chip
− Supports separately powered 3.3V (5V tolerant) interface to system memory, AGP, and PCI bus
− Modular power management and clock control for advanced system power management
• High Performance Athlon CPU Interface
− Supports Socket-A (Socket-462) AMD Athlon processors
− HSTL-like 1.5V high-speed transceiver logic signal levels
− Support independent address, data, and snoop interfaces
− 100 MHz DDR (Double Data Rate) transfer on Athlon CPU address and data buses
− Built-in PLL (Phase Lock Loop) circuitry for optimal skew control within and between clocking regions
− Four-entry command queue to accommodate maximum CPU throughput
− Four-entry probe queue to stores probes from the system to the processor
− Twenty four-entry processor system data and control queue to store system data control commands in two separate
read and write buffers for data movement in and out of processor interface
− Supports WC (Write Combining) cycles
− Sleep mode support
− System management interrupt, memory remap and STPCLK mechanism
Preliminary Revision 1.0, May 12, 2000
-1-
Features