DigRF V3

DigRF V3

DigRF is an electronics interface standard intended for the cellular market.

Detail

The DigRF v3 standard specifies a digital serial interface, which replaces the analog interface in previous generation mobile handset architectures. The DigRF v3 standard supports a variety of 3GPP air standards. The basic physical layer of DigRF v3 standard is implemented with a six wire interface. Independent transmit (Tx) and receive (Rx) differential signal pairs allow for concurrent bi-directional communication between the RF-IC and the BB-IC. SysClk and SysClkEn provide the timing references for digital serial data transmission and recovery. The DigRF v3 standard defines two basic packet types. Control packets are typically generated by the BB-IC for the purpose of configuring the RF-IC. Control packets are also utilized to communicate status between the RF-IC and the BB-IC. Digital IO data is transferred between the RF-IC and the BB-IC in DigRF v3 data packets.

Standard

DigRF standards contributors include Agere Systems, Agilent Technologies, Anritsu, Freescale Semiconductor, Icera, Infineon, M/A-Com, Maxim, Motorola, NEC, Nokia, Panasonic, Philips, Renesas, RF Micro Devices, Rohde & Schwarz, Sequoia, Silicon Laboratories, Sirific Wireless, Skyworks Solutions, Texas Instruments, Sony Semiconductors, ST Microelectronics, and TTPCom.

DigRF Testing

Test products and solutions must evolve to enable debug and characterization of DigRF v3 based components and mobile handsets. Test and measurement tools like spectrum analyzers and RF signal sources that have historically been used in the debug and characterize phase are necessary, but not sufficient to do the job on DigRF v3 based products. The air interface from the RF-IC still requires the traditional RF test and measurement tools. However, as the DigRF v3 interface standard replaces the analog interface between the RF-IC and the Baseband-IC, a spectrum analyzer can no longer measure this critical point in the system.

External links

* [http://www.mipi.org/digrf.shtml MIPI] DigRF is now incorporated within the Mobile Industry Processor Interface Alliance. Specifications are only available to MIPI members.
* [http://www.electronicstalk.com/news/ttp/ttp221.html DigRF interface suits RF and baseband for 3G]
* [http://www.agilent.com/about/newsroom/presrel/2007/05feb-em07016.html DigRF test solution available from Agilent Technologies]


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