Kontron COMe-cOHXX - Manual (Page 18)

Kontron COMe-cOH2/COMe-cOH6 User’s Guide
www.kontron.com
13
All dimensions are shown in millimeters. The COM Express® specification says
that these holes should be ± 0.25mm [±0.010"], unless otherwise noted. The
tolerances for placement of the COM Express connector with respect to the peg
holes (dimensions [16.50, 6.00]) should be ± 0.10mm [±0.004"]. The mounting
holes shown in the drawing use 6mm diameter pads and 2.7mm plated holes for
use with 2.5mm hardware. The pads are tied to the PCB ground plane. Black
circles represent the mounting holes required by the PICMG COM Express®
standard.
3.4 Electrical Specifications
3.4.1 Supply Voltage
ATC Power
» 4.75V to +18V main power is on the COM Express VCC_12V pins and 4.75V to
5.25V standby power is on the VCC_5V_SBY. RTC power is provided on the
VCC_RTC pins. VCC_12V may or may not collapse in suspend states S3, S4, and
S5.
Single Power Supply
» 4.75V to +18V main power is on the COM Express VCC_12V pins and standby
power if needed is also provided on the VCC-12V pins. The VCC_5V_SBY pins
may be floating or may be tied to a 5V source on the carrier board. RTC
power is provided on the VCC_RTC pins.
Power Supply Risetime
To be supplied in a future release of this manual.
3.4.2 Supply Current (Windows XP SP3)
The testing performed to capture the supply current data used tested modules
mounted on a Kontron evaluation board with a mouse and keyboard connected.
The power consumption tests were executed in Windows XP (with SP3) using a
tool to stress the CPU at 100 % load. The power measurement values were
captured after 15 minutes of full load or a stable CPU core temperature of
90°C. To ensure a stable die temperature, a corresponding heat sink was used
to hold the temperature under the critical trip point. The modules were
tested using the maximum CPU frequency. For more detailed information, refer
to the “Power Consumption” diagrams on the EMD Customer section of the
Kontron website.
Table 1: AMD G-Series APU