Integration Manual

GTM353W Integration Manual
Author:
R
. Claessens
Version:
4.0 Draft 2
Creation Date:
September 20, 2006
Page:
11 of 52
Option Confidential:
This document is Option Confidential - it may not be duplicated, neither distributed externally without prior and written permission of
Option NV.
PIN
#
Pin assignment in
PCIExpress Mini
Card spec
Pin assignment on
GTM35x
Additional Description
34 GND GND Mini Card ground.
35 GND GND Mini Card ground.
36 USB_D- USB_D- As in the Mini Card specification.
37 GND GND Mini Card ground
38 USB_D+ USB_D+ As in the Mini Card Specification.
39 3.3Vaux 3.3V 3.3V rail
40 GND GND Mini Card ground.
41 3.3Vaux 3.3V 3.3V rail
42 LED_WWAN# LED_WWAN_RadioState
Active-low LED drive signal for indicating the state of
the WWAN Radio.
43 GND GND Mini Card GND
44 LED_WLAN# NC No Connect.
45 AUX_PCM_CLK NC AUX_PCM_CLK
46 LED_WPAN# NC No Connect.
47 AUX_PCM_DIN NC AUX_PCM_DIN
48 1.5V NC 1.5V DC is not to be used
49 AUX_PCM_DOUT NC AUX_PCM_DOUT
50 GND GND Mini Card Ground
51 AUX_PCM_SYNC NC AUX_PCM_SYNC
52 3.3Vaux 3.3V
3.3V DC supply rail from the host system. Further
description of the sourcing characteristics of this rail
is provided in this document.
· Table 1: PCIExpress Mini Card pinout
Remark: Increased electrical power and ground
Initial design reviews show that the current requirements exceed the limits set by the older
versions of the PCI Express Mini Card standard v. 1.1. In order to reduce impedances
additional pins are needed for power and grounding. Pins are required for supporting the
current 1.1A / 2.75A (average / peak) instead of 750mA / 1A. In the new version of the
standard, additional supply and grounding pins have been defined for this reason. Those pins
are pin 39/41 for additional 3.3V, and 37/43 for additional GND connections