Core of Hangzhou country introduces the national standard ground demodulation chip GX1501 of the bimodulus
Core scientific and technological Co., Ltd. (NationalChip) of Hangzhou country Introduce its high-performance national standard ground demodulation chip GX1501 of bimodulus. GX1501 to support the intersection of digital television and the intersection of broadcast transmission and standard channel demodulation of GB20600-2006, ground of China, decode the chip totally. Support the single carrier to involve all 330 kinds of modes of the multi-carrier. Adopt multiple innovative technology, optimization technique, parameter adaptive techniques, make it have unparalleled fixing to receive and move receptivity.
GX1501 still supports DVB-C (ITU-T J.83 A/C) at the same time 16, 32, 64, 128, 256 QAM all modes that transmission standard can be that the acceptance criteria stipulates. Integrate pairs of 10bit high-accuracy ADC inside the GX1501, support direct intermediate frequency to sample or the base band is sampled, support all Can Tuner of the market mainstream at present, the compatible Silicon Tuner development trend in the future too, bring the right to choose of the maximum scheme to customer. Meanwhile, the chip adopted the treatment technology of Full Digitalization, reduced the quantity that China and foreign countries of complete machine solution enclose the device to the maximum extent, having reduced system cost and scheme complexity, thus reduce BOM cost effectively.
GX1501 has remarkable digital signals that obtains ability. In case of unknown modulation mode, automatic detection can be and which run all DTMB modes, also have very strong inverted identification ability of automatic frequency spectrum. Inside adopts the unique synchronization mechanism, and it is blind to make it have outstanding high speed and sweep the characteristic. Its frequency swing of carrier resumes the range and is greater than & plusmn; 500kHz, even can reach & plusmn; 1MHz. As timing deflection of sampling over situation of 200 ppm, still but hold-in.
In order to cooperate with the conceptual design of the complete machine, GX1501 has offered the flexible humanized peripheral interface. AGC interface substantially as offering the two-way PWM wave to export, RF_AGC and IF_AGC; Includes Line two I2C's transponder, has reduced the interference on tuner of the digital signal to the greatest extent; TS data flow can carry on bunch / run side by side two kinds of format conversion, and output the base pin order and can be disposed arbitrarily, have helped the routing of the complete machine hardware scheme designed greatly; Signal quality is real-time monitored, the instant reflects the real signal state.
GX1501 has used multiple innovative technology, optimization technique and parameter adaptive techniques, make it have outstanding co-frequency to imitate television interference and interference rejection capoability of the monofrequency. Especially have very strong inhibitory potencies on impulse rate, are especially suitable for the severe movement of impulse rate and receive the environment, can expand coverage received effectively.
GX1501 embedded DTMB and DVB-C demodulation receives the module. Give not subsequent " The integrated machine " The market brings a revolutionary change. Can receive the digital television signals of the wired and ground at the same time through a chip, bring the most direct low BOM cost competitive edge to production firm of the integrated machine, cost performance advantage of playing well.