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11250-11

SmartHSF™ Mobile Modem

Conexant Systems 

SmartHSF Mobile Modem Data Sheet

PDC Packet Mode (C Models)

PDC Packet Mode, implemented in host software as an optional mode of PDC, enables packet-based data communications

at 28.8 kbps. PDC Packet Data Mode is enabled by the +WS46=20 and +CPDCM=3 AT commands and disabled by the

+WS46=1 AT command.

PHS Mode (C Models)

PHS Data Mode is implemented in host software and supports a data rate of 32 kbps. PHS uses the PIAFS protocol stack.

PHS Data Mode is enabled by the +WS46=26 AT command and disabled by the +WS46=1 AT command.

cdmaOne Data Mode IS95A (C Models)

cdmaOne Data Mode is implemented in host software and supports data rates of 9.6 kbps and 14.4 kbps. cdmaOne Data

Mode is enabled by the +WS46=13 AT command and disabled by the +WS46=1 AT command.

cdmaOne Data Packet Mode IS95B (C Models)

cdmaOne Data Packet Mode is implemented in host software and supports a data rate of 64 kbps. cdmaOne Data Packet

Mode is enabled by the +WS46=13 AT command and disabled by the +WS46=1 AT command.

GSM Mode (C Models)

GSM Mode, implemented in host software, supports data and fax transfer. The supported features include:

• Data modem

− V.21, V.23, V.22, V.22 bis, V.32

− ISDN interoperability: 300 bps to 9600 bps

• Transparent asynchronous mode up to 9600 bps

• Non-transparent mode (RLP) up to 9600 bps

• Fax modem send and receive rate up to 9600 bps

• AT GSM commands (ETSI 07.07)

• GSM direct connect

• Driver interface for OEM-provided phone driver

• Built-in parallel host (16550A UART) interface

GSM mode is enabled by the +WS46=12 AT command and disabled by the +WS46=1 AT command.

1.3.4 Reference Design

A Mini PCI Type IIIB data/fax/TAM reference design board is available to minimize application design time and costs.

The board is pretested to pass FCC Part 15, Part 68, and CTR 21 for immediate manufacturing.

A design package for the board is available in electronic form. The design package includes schematics, bill of materials

(BOM), vendor parts list (VPL), board layout files in Gerber format, and complete documentation.

The design can also be used for the basis of a custom design by the OEM to accelerate design completion for rapid market

entry.

1.4 HARDWARE DESCRIPTION

SmartDAA technology (patent pending) eliminates the need for a costly analog transformer, relays, and opto-isolators that

are typically used in discrete DAA implementations. The programmable SmartDAA architecture simplifies product

implementation in worldwide markets by eliminating the need for country-specific components.

1.4.1 CX11250 Host Side Device

The CX11250 Host Side Device (HSD), packaged in a 100-pin TQFP, includes a PCI/Mini PCI Interface and a SmartDAA

Interface.

The PCI/Mini PCI interface connects directly to an embedded or external PCI/Mini PCI interface eliminating the need for

additional external logic components.

The SmartDAA Interface communicates with, and supplies power and clock to, the LSD through the DIB.

100553B

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