User's Guide

80-VF329-3 Rev. C 16 QUALCOMM Confidential and Proprietary
MAY CONTAIN U.S. EXPORT CONTROLLED INFORMATION
3 DC Power and UNDP Operating
Modes
3.1 DC power source
The host computer provides the UNDP-1 power source via the 52-pin card edge connector
(Figure 3-1). A nominal supply voltage of 3.3 V is expected, as defined in the PCI Express
Mini Card Electromechanical Specification, Revision 1.1. UNDP-1 voltage and current
specifications are provided in the Universal Notebook Data Platform Device Specification
(80-VF329-1).
Figure 3-1 DC power connections
With a proper DC power source applied, the UNDP-1 platform is powered up and down as
directed by the W_DISABLE_N control signal from the host computer: logic low =
disabled; logic high = enabled.
MDM1000
PM6653
status &
control
on-board
supply
voltages
VMAIN_3P3
mini card edge connector
W_DISABLE_N
20
52
41
39
24
2