MEC1404 Datasheet, PDF (155/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
TABLE 7-2: CHIP-LEVEL (GLOBAL) CONTROL/CONFIGURATION REGISTERS (CONTINUED)
Register
Device Mode
Test
Offset
24h
25h - 2Fh
Description
Bit [1:0] Reserved – writes ignored, reads return “0”.
Bit[2] SerIRQ Mode)
= 0: Serial IRQ Disabled.
= 1: Serial IRQ Enabled (Default).
Bit [7:3] Reserved – writes ignored, reads return “0”.
Test
This register locations are reserved for Microchip use. Modify-
ing these locations may cause unwanted results.
7.7.2 DEVICE IDENTIFICATION
TABLE 7-3: DEVICE IDENTIFICATION PER PRODUCT
Product
Device ID [15:0]
MEC1404
MEC1406
MEC1408
MEC1414
MEC1416
MEC1418
0002h
0004h
0006h
0008h
000Ah
000Ch
Device Sub ID [7:0]
10h
10h
10h
10h
10h
10h
7.7.3 LOGICAL DEVICE CONFIGURATION REGISTERS
The Logical Device Configuration registers support motherboard designs in which the resources required by their com-
ponents are known and assigned by the BIOS at POST.
Each logical device may have a set of directly I/O addressable Runtime Registers, Configuration Registers accessible
via the Configuration Port, or DMA registers. The following table lists the register types for each LPC Host-accessible
Logical Device implemented in the design. The Embedded Controller (EC) can access all Configuration Registers and
all Runtime Registers directly.
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DS00001956D-page 155