Austin, Texas - Silicon Laboratories Inc. says that its latest direct-access-arrangement (DAA) chip sets provide complete hardware solutions for notebook and desktop V.92 soft modems.
The offering consists of two chip sets, the Si3052 Global PCI DAA, compliant with the latest PCI 2.3 standard, and the Si3054 Global MC '97 DAA, compliant with Intel's latest AC '97 2.3 standard. Like previous DAAs from Silicon Labs, the Si3052 and Si3054 are based on the company's ISOcap technology, a patented method of transferring modem control information and data across a capacitive isolation barrier in digital format. This enables global programmability, improved noise immunity and a broad feature set without requiring additional external components.
Boasting high integration and a low-cost bill of materials, the DAAs use 75 percent less board space, 50 percent fewer components and save 60 percent of the BOM cost compared with competing solutions, according to the company. The DAAs support the PCI standard with a single 64-pin PCI chip, which is among the smallest PCI modem chips in the industry. They also support MiniPCI, Mobile Daughter Card (MDC), Communications Network Riser and modem-on-motherboard (MoM) with one 16-pin MC '97 chip.
The high integration and small footprint are particularly important for MDC, MoM and combined modem/networking applications, the company said. For the first time, a single-sided MDC modem is enabled, reducing cost and increasing reliability by simplifying manufacturing compared with traditional double-sided MDC designs. Additionally, the small DAA footprint enables small-form-factor notebook PC applications such as MoM and combination applications that include modem plus Ethernet local-area networking, wireless LAN and Bluetooth.
The DAAs are fully programmable to meet global telephone-line standards, including FCC, TBR-21 and Jate. Additionally, Silicon Labs' DAA architecture supports the most difficult international requirements for out-of-band energy, high-voltage surges and isolation.
The Si3052 global PCI DAA chip set includes a 64-pin thin quad flat pack system-side chip and a 16-pin SOIC line-side chip. It is offered at $4.50 in quantities of 10,000. The Si3054 global MC '97 DAA chip set includes a system-side and a line-side device, both of which come in low-profile 16-pin SOIC or TSSOPs. The SOIC version is priced at $4.17 in quantities of 10,000. Samples are available now and volume production is to begin this quarter.
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