(China (Mainland))
Product Summary
The BCM3140A3IQME is a dual universal advanced TDMA PHY-layer burst receiver. The BCM3140A3IQME is a highly integrated solution that significantly decreases the board space and cost of demodulators in digital cable modem head-ends applications. The BCM3140A3IQME provides two independent cable network receivers that accept QPSK and m-QAM burst data in frequency-agile, time division multiple access (TDMA) schemes. Advanced features in the BCM3140A3IQME include an analog front end (AFE), a QAM demodulator, a generalized equalizer and an enhanced Reed Solomon (RS) FEC decoder with dynamic deinterleaving.
Features
BCM3140A3IQME features: (1)The BCM3138 is a universal headend advanced TDMA physical layer QPSK/QAM burst receiver; (2)DOCSIS/EuroDOCSIS-based, IEEE 802.14, DAVIC and DVB compliant; (3)Programmable demodulation including BPSK, QPSK, 8, 16, 32, 64, 128 and 256 QAM formats; (4)Variable symbol rates from 160Kbaud to 5.12Mbaud providing 320 Kbps to 40 Mbps operation; (5)Powerful Reed Solomon FEC decoder with byte deinterleave options; (6)for impulse/burst noise mitigation; (7)Burst acquisition as fast as 16 preamble symbols; (8)On-board 10-bit analog-to-digital converters for each channel; (9)Direct sampling option for DOCSIS and EuroDOCSIS via 12-bit digital input operating at 160 MHz with LVDS or TTL level interface options; (10)Powerful on-board equalizer provides ingress and adjacent channel overlap protection; (11)Integrated Fast Fourier Transform (FFT) processor with variable FFT sizes and programmable window options; (12)I2C or SPI-compatible microcontroller interface; (13)JTAG test interface; (14)208-pin PQFP package; (15)Operates over industrial temperature range (-40 to +85 degrees C).
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