MEC1404 Datasheet, PDF (100/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
4.4 Interface
This block is designed to be accessed externally via the pin interface and internally via a registered host interface.
FIGURE 4-1:
BLOCK DIAGRAM OF LPC INTERFACE CONTROLLER WITH CLKRUN#
SUPPORT
Interface to
Configuration
Registers
LPC Interface
(Logical Device Ch)
Serial IRQ
State Machine
Interface to Logical
Device Register
LPC Config
Registers
LPC Controller
LPC Regis-
ters
(Runtime,
EC-Only)
LAD0
LAD1
LAD2
LAD3
LFRAME#
LRESET#
LCLK
SERIRQ
CLKRUN#
4.4.1 SIGNAL DESCRIPTION
TABLE 4-2: SIGNAL DESCRIPTION TABLE
Name
LAD0
Direction
Input/Output
LAD1
Input/Output
Description
Bit[0] of the LPC multiplexed command, address, and
data bus.
Bit[1] of the LPC multiplexed command, address, and
data bus.
DS00001956D-page 100
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