OZ998 - O2Micro

OZ998 Smart Multi-DIMM Selector

O2Micro’s OZ998 Multi-DIMM Selector supports the switching between a primary SMBus and 3 other secondary SMBus. This function is particularly useful for DIMM devices and the support of Intel’s PAS (Preboot Authentication Service). In addition, the OZ998 can be configured to support two different power planes with different sets of General Purpose Input/Outpu.

Features

• SMBus, version 1.0, compliant
• Intel PAS Protected Storage support
• Support Pentium and x86-based designs
• Support SMBus Q-Buffering via PWRGD
• Support SMBus selector for dual/triple DIMMs
• 32KHZ input clock or Crystal input
• Support 2 different power planes
• 10 bytes scratch pad registers
• 20 possible edge-sensitive programmable GPIOs per device
• 8 possible Open Drain, Open Collector outputs
• Programmable addresses for cascaded OZ998s
• Supports 3.3V or 5V operation
• Supports 5V tolerant LVTTL inputs (OZ998B)
• LOW power hardware-driven speaker alarm outputs
• SMBALERT# and SMI e.