MEC1404 Datasheet, PDF (245/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
TABLE 15-1: ACPI PM1 SIGNAL DESCRIPTION TABLE
Name
EC_SCI#
Direction
Output
Description
Any or all of the PWRBTN_STS, SLPBTN_STS, and RTC_STS
bits in the Power Management 1 Status 2 Register can assert the
EC_SCI# pin if enabled by the associated bits in the Power Man-
agement 1 Enable 2 Register register. The EC_SCI_STS bit in the
EC_PM_STS Register register can also be used to generate an
SCI on the EC_SCI# pin.
15.6 Host Interface
The registers defined for the ACPI PM1 Block Interface are accessible by the various hosts as indicated in Section
15.11, "Runtime Registers".
15.7 Power, Clocks and Resets
This section defines the Power, Clock, and Reset parameters of the block.
15.7.1 POWER DOMAINS
Name
Description
VTR
This power well sources all of the registers and logic in this block, except
where noted.
15.7.2 CLOCKS
This section describes all the clocks in the block, including those that are derived from the I/O Interface as well as the
ones that are derived or generated internally.
Name
48 MHz Ring Oscillator
15.7.3 RESETS
Description
This clock signal drives selected logic (e.g., counters).
Name
Description
nSYSRST
This reset signal resets all of the registers and logic in this block.
15.8 Interrupts
This section defines the Interrupt Sources generated from this block.
PM1_CTL
Source
Description
This Interrupt is generated to the EC by the Host writing to the Power
Management 1 Control 2 Register register
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