![Avnet COM Express MSC C6C-AL Скачать руководство пользователя страница 25](http://html.mh-extra.com/html/avnet/com-express-msc-c6c-al/com-express-msc-c6c-al_user-manual_3032967025.webp)
MSC C6C-AL
MSC C6C-AL User Manual
25 / 128
2.11 Use Conditions
The Use Conditions define run-time parameters such as the operating mode (eg. 24/7), activity factor, max frequency, temperature range etc. for the
target application.
Certain Use Conditions may have an effect on the lifetime of the product.
For industrial use cases where longer lifetime and higher activity factors may be required, processor manufacturers may recommend to limit the
performance of the processing units.
For such purposes MSC provides a special BIOS version for extended reliability. This BIOS is available for download from our support website.
Please consult the relevant processor manufacturer datasheets for more information.
2.12 Signal description
Pins are marked in the following tables with the power rail associated
with the pin, and, for input and I/O pins, with the input voltage
tolerance. The pin power rail and the pin input voltage tolerance
may
be different. For example, the PCI group is defined as having a 3.3V
power rail, meaning that the output signals will only be driven to 3.3V,
but the pins are tolerant of 5V signals.
An additional label, “Sus”, indicates that the pin is active during
suspend states (S3, S4, S5). If suspend modes are used, then care
must be taken to avoid loading signals that are active during suspend
to avoid excessive suspend mode current draw.
Pin-Types:
I = Input.
O = Output.
OD = Open Drain output.
I/OD = Bi-directional Input/Open Drain Output Pin.
I/O = Bi-directional Input/Output.
ePU = external pull-up resistor on COM Express module.
ePD = external pull-down resistor on COM Express module.
eSR = external series resistor on COM Express module.
iPU = integrated pull-up resistor inside PCH or other IC, real value may
vary from nominal one.
iPD = integrated pull-down resistor inside PCH or other IC, real value
may vary from nominal one.