Description:

VL82C522 Lynx/M Peripheral Controller

The Lynx/M chipset also includes a PCI Super I/O device, the Lynx/M Mobile Peripheral Controller (MPC). This device, also packaged in a low-profile 352 BGA, integrates a PCI 2.1 compliant bus interface, a fully buffered Bus Mastering IDE controller, an '077 floppy disk controller, Enhanced Capabilities Port (ECP), two 16550 UARTs with modem functionality, an SMB/I2C bus, an IrDA 1.1 compatible Fast Infrared communications port with ASK functionality, a Real-Time Clock, two pulse-width modulator outputs (PWM), and a 33MHz 8052 microcontroller. Two on-board PLLs with buffering provide all the required system clocks from only two crystal inputs, 14.318MHz and 32KHz.

A sub-ISA bus supporting 8- or 16-bit I/O or DDMA transfers, and ISA Bus Mastering supports audio devices. Additionally, eight positive PCI address decodes provide support to Sub-ISA peripherals.

The 8052 provides the keyboard controller functionality with built-in scan for matrix keyboards and system boot controller functionality to completely wake up any part or all of the system from any level of suspend. The wake-up event can be a system event, timer, or any key depression on the keyboard. The MPC also provides up to 25 GPIO pins with expansion capabilities to provide flexible control of system components.

Singular ROM architecture enabled by the integrated 8052 keyboard controller saves both PCB space and cost by permitting a solitary ROM, Flash, or SRAM device to be used for keyboard, graphics and system BIOS.