Description

The MEC1310 is a 128-pin 3.3V LPC-based ACPI 2.0 and PC99/PC2001 compliant Notebook I/O Controller. See FIGURE 1: MEC1310 Block Diagram on page 4. The MEC1310 incorporates a high-performance 8051-based keyboard and system controller with internal embedded 64K SRAM; a 1K byte Boot ROM, and 64-bytes battery backed registers. The embedded 64K SRAM is loaded via HOST/8051 SPI Memory Interface. The HOST/8051 SPI Memory Interface can be configured in Switched SPI Flash Configuration or Parallel Shared SPI Flash Configuration.

Specifications and features

- 3.3V Operation with 5V Tolerant Buffers on PS/2 pins
- ACPI 1.0/2.0 PC99/PC2001 Compliant
- LPC Interface with Clock Run Support
- Supports LPC Bus frequencies of 19.2MHz to 33MHz
- Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems
- 15 Direct IRQs
- ACPI SCI Interface
- nSMI output and supporting PM registers
- Shadowed write only registers
- Internal 64K SRAM in MEC1310
- Loaded at VCC1 power from the HOST/8051 SPI Memory Interface
- Provides 64KB of 8051 program space
- 32k-Byte region shared with 8051data space
- HOST/8051 SPI Memory Interface
- 3-pin Full Duplex serial communication interface.
- One Chip Select Pins
- Fully 8051 Controlled
- Hardware Support for two SPI Flash Configurations:
- Switched SPI Flash Configuration
- Parallel Shared SPI Flash Configuration
- Debug Programming Interface
- Two Power Planes
- Low Standby Current in Sleep Mode
- Three ACPI Embedded Controller Interface
- Configuration Register Set Compatible with ISA Plug-and-Play Standard (Version 1.0a)
- High-Performance Embedded 8051 Keyboard and System Controller
- Provides System Power Management
- System Watch Dog Timer (WDT)
- 8042 Style Host Interface
- Supports Interrupt and Polling Access
- 1024 Boot /ROM
- 256 Bytes Data RAM
- On-Chip Memory-Mapped Control Registers
- Access to VCC0 Backed Registers
- Up to 18x8 Keyboard Scan Matrix
- Two 16-Bit Timer/Counters
- Integrated Full-Duplex Serial Port Interface
- Seventy-Three 8051 Interrupt Sources
- Thirty-Two 8-Bit, Host/8051 Mailbox Registers
- Sixty-Four Maskable Hardware Wake-Up Events
- Fast GATEA20
- Fast CPU_RESET
- Multiple Clock Sources and Operating Frequencies
- IDLE and SLEEP Modes
- Trace FIFO Debug Port
- Accurate Fail-Safe Ring Oscillator
- Single Clock source for most 8051 and SIO functions
- Provides 2% frequency accuracy
- Lock Bit provides status
- 32.768KHz-input clock
- Single ended input
- Compatible with south bridge SUSCLK/ RSMRST# gating rules
- Replacement 32K distribution available when RSMRST# is asserted
- Very low power state with only external 32K clock distributed
- Integrated Standby Power Reset Generator
- VCC1_RST# open drain output
- Accepts External driven Reset
- VCC0 Backed Resources
- 64 Byte VCC0 Backed Registers
- VCC0 Backed Status Register
- Three 8584-Style I2C/SMBus Controllers
- 8051 Controlled Logic Allows I2C/SMBus Master or Slave Operation
- I2C/SMBus Controllers are Fully Operational on Standby Power
- Two Controllers with 2 Sets of Dedicated Pins per I2C/SMBus Controller
- One Controller with one Set of Dedicated Pins per I2C/SMBus Controller
- Four independent Hardware Driven PS/2 Ports
- GPIO signal function associated with each pin
- PECI Interface 2.0

Application Scenarios

This electronic component model is ideal for notebook I/O control applications. It is compatible with ACPI 2.0 and PC99/PC2001 standards. It incorporates a high-performance 8051-based keyboard and system controller, making it suitable for systems that require efficient control and management. With its internal embedded 64K SRAM and HOST/8051 SPI Memory Interface, it offers reliable and fast memory access. The MEC1310 also features multiple PS/2 ports, I2C/SMBus controllers, and ACPI Embedded Controller Interface, providing versatile connectivity options. Its power control circuitry supports low power down modes, making it energy-efficient. Furthermore, it offers advanced features such as fan control, hardware monitoring, and analog to digital conversion, expanding its potential uses in various applications.

Comparison

- Compliant with ACPI 2.0 and PC99/PC2001 standards
- High-performance 8051-based keyboard and system controller
- Internal embedded 64K SRAM for reliable memory access
- Multiple connectivity options including PS/2 ports, I2C/SMBus controllers, and ACPI Embedded Controller Interface
- Power control circuitry supports low power down modes
- Advanced features such as fan control, hardware monitoring, and analog to digital conversion

- Requires 3.3V operation voltage
- Limited compatibility with certain systems
- Complex configuration and programming interface