VL82C315A SCAMP II Controller

The VL82C315A SCAMP II Controller is the next generation of SCAMP II System Controllers intended primarily for low-power applications, such as notebook computers, that require a high degree of integration.

The SCAMP II Controller is a 208-lead device that replaces the following peripheral logic on the motherboard:

• Two 82C37A DMA controllers
• 74LS612 memory mapper
• Two 82C59A interrupt controllers
• 82C54 timer
• 82284 clock generator and ready interface
• 82288 bus controller
• 8242 keyboard controller
• 146818A real-time clock

The VL82C315A also includes the logic for System Management Interrupt (SMI) control, address/data bus control, memory control, shut down,standard and suspend mode, refresh generation, refresh/DMA arbitration, and advanced power management features.

Features:

• 33 MHz operation at 5V and 25 MHz at 3.3V
• Supports mixed voltage (3.3/5V) operation without external level shifters
• Supports CAS-before-RAS and self refresh during suspend mode
• local bus peripheral support for all cycle types
• Built-in keyboard controller and real-time clock
• Supports sleep mode and stop clock
• Supports AMD SMI and I/O trapping