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3/ Features and Interfaces
3.1. ACPI Power States
ACPI enables the system to power down and save power (suspend) when not required and wake up when required
(resume). The ACPI controls the power states S0-S5, where S0 has the highest priority and S5 the lowest priority.
The COMe-cEL6 supports ACPI 6.0 and the power states S0, S3, S4, S5 only.
Not all ACPI defined power states are available.
Systems that support the low-power idle state do not use power states S1.
Table 15: Supported Power States Function
S0
S3
S4
S5
To power on from states S3, S4 and S5 use:
Power Button
WakeOnLAN (S3, S4)
3.2. eMMC Flash Memory (option)
The on-module Embedded Multimedia Flash Card (eMMC) is eMMC 5.1 compatible. The standard COMe-cEL6 variants
support MLC. On request eMMC pSLC can be offered. During the manufacturing process, Multi Level Cell (MLC) eMMC
is reconfigured to act as pseudo Single Level Cell (pSLC) eMMC to provide improved reliability, endurance and
performance.
The COMe-cEL6's eMMC flash memory supports up to 64 GByte pSLC or 128 GByte MLC.
3.3. eSPI Mode (option)
The eSPI interface is pin shared with LPC interface signals; to switch from one interface to another, a hardware
modification in the form of additional resistors is required. The modules signal ESPI_EN# on pin-B47 indicates
whether ESPI-mode or LPC-mode is enabled/disabled. The LPC interface is the default connection to COMe connector.
In eSPI mode "ESPI_EN#" connects to ground on the carrier. The module uses pull-up resistors on this signal to detect
the mode.
If ESPI_EN# selection on the carrier does not match the module configuration (eSPI/LPC) the
module is unable to boot.
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Working state
ACPI suspend to RAM state
Suspend-to-disk/Hibernate
Soft-off state
COMe-cEL6 - User Guide, Rev.1.2
// 38
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