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TDA18211HD Folha de dados(PDF) 7 Page - NXP Semiconductors |
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TDA18211HD Folha de dados(HTML) 7 Page - NXP Semiconductors |
7 / 66 page TDA18211HD_5 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 05 — 2 June 2009 7 of 66 NXP Semiconductors TDA18211HD DVB-T Silicon Tuner IC 8.3 Crystal input mode The TDA18211HD requires a 16 MHz crystal reference. The chosen crystal must withstand at least 100 µW drive level. An additional shunt capacitor as shown in Figure 1 is also needed. Its typical value is 5.6 pF. The quartz references for which performance is guaranteed are: • NDK NX5032 • Siward SX-5032 • TXC 9C series • Chungho Elcom HC49/S profile Clock reference: • In Master mode, the clock reference must be provided by a 16 MHz crystal connected between pins XTALP and XTALN of the master tuner • In Slave mode, the clock reference must be provided by pins XTOUTP and XTOUTN of the tuner in Master mode to pins XTALP and XTALN of the tuner in Slave mode 8.4 Crystal output mode Pins XTOUTP and XTOUTN deliver a symmetrical sine waveform to drive the channel decoder and/or IF demodulator. The load on both outputs should be made similar to ensure optimum performances. Hence, if only one crystal output is used, the unused output should be loaded by an equivalent capacitance. 9. Control interface 9.1 I2C-bus format, write/read mode Remark: In I2C-bus read mode, the TDA18211HD must read the entire I2C map with the required subaddress 00h. The number of bytes to be read is 16, or 39 in extended register mode; see Table 7. Reading write-only bits can return values that are different from the programmed values. |
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