User Manual

Table Of Contents
14
Cisco Connected Grid 3G Module Installation and Configuration Guide
OL-25991-01
Hardware Overview
CDMA
The MC5728V PCI Express Mini Card modem provides voice, features, and CDMA and 1xEVDO
wireless radio connectivity technologies with dual-band diversity radio supporting the following
frequency bands:
800 MHz cellular
1900 MHz PCS
MC5728V includes two RF connector jacks for use with host antennas. (It does not have integrated
antennas.) One connector is used for the main Rx/Tx path.
MC5728V supports the following RF features:
Dual-band for 800 MHz cellular and 1.9 GHz PCS bands
Diversity support for the 800 MHz cellular and 1.9 GHz PCS bands
CDMA authentication as specified in CDMA 1X
IS-95A/B and CDMA 1X Release 0/A
IS-856 1xEVDO Revision A
The MC5728V Mini Card supports communication with the host through the USB interface. The USB
interface can be dynamically configured to operate in one of two modes:
Non-MUX mode
MUX mode
The MC5728V Mini Card supports three logical interfaces:
Data channel—Supports AT command and PPP packet exchange during data calls
Control channel—Supports modem control and status, call processing, and event notification
Diagnostic channel—Supports the QUALCOMM Diagnostic Monitoring protocol used by support
tools
GSM Module SIM Interface
Two adjacent SIM sockets (SIM1 and SIM2) are available on the card. The SIM card stores critical GSM
subscriber authentication information.
The two SIM cards are powered by the modem and operates at 5 MHz. The SIM card is a 3.3 V device,
and has 2.8 V power applied to its power pin.
Through the software you can control which SIM is connected to the modem. Only one SIM can be
connected to the modem at any time. The SIM switching circuit also provides the option of disconnecting
both SIMs form the modem. The 3G Debug and SIM Control register controls the SIM connections.
By setting the SIM Socket Enable and the SIM Socket Select bit, you can control the signal and power
connections from the modem to the SIM card.