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Description of Functional Blocks

EBR64966601

Rev A, Jan 2010

< EBR64966601 >

LG Electronics

Hanyang Univ. 1271, Sa-dong, Sangrok-gu ,

Ansan-si, Gyeonggi-do 426-791, Korea

Tel:82-31-436-7653

Fax:82-31-436-7991

www.lge.com

specification are preliminary and LG Innotek reserves the right to change these without notice.

Summary of content (4 pages)

PAGE 1
Description of Functional Blocks EBR64966601 Rev A, Jan 2010 < EBR64966601 > LG Electronics Hanyang Univ. 1271, Sa-dong, Sangrok-gu , Ansan-si, Gyeonggi-do 426-791, Korea Tel:82-31-436-7653 Fax:82-31-436-7991 www.lge.com Copyright ⓒ 2010, LG Electronics Co., Ltd. http:\\www.lge.com All specification are preliminary and LG Innotek reserves the right to change these without notice.
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■ EBR64966601 1. RF Transmitter Block 1.1 Transmitter Feature The transmitter part of RF-Receiver is internally based on direct synthesis of the RF frequency. The frequency synthesizer includes a completely on-chip LC VCO and a 90 degrees phase shifter for generating the I / Q LO signals to the down-conversion mixers in receive mode. The baseband transmit data is digitally 2-FSK/GFSK/MSK modulated in the modem block and up-converted to the 2.4 GHz ISM band in the transmitter path.
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■ EBR64966601 2. RF Receiver Block 2.1 Receiver Feature The RF-Receiver features a low-IF receiver. The received RF signal is amplified by the low noise amplifier (LNA) and down-converted in quadrature (I and Q) to the intermediate frequency (IF). At IF, the I/Q signals are digitized by the ADCs. Automatic gain control (AGC), fine channel filtering, demodulation bit/packet synchronization are performed digitally. 2.1.
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■ EBR64966601 3. Baseband Core The RF-Receiver is based on the industry leading CC2500 radio core. It has few external components (On-chip frequency synthesizer, no external filters or RF switch needed). It also flexibly manage for packet oriented systems (On-chip support for sync word detection, address check, flexible packet length, and automatic CRC handling). With Supports use of DMA for both RX and TX it results in minimal CPU intervention even on high data rates.