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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AMU2481 датащи(PDF) 11 Page - Micronas |
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AMU2481 датащи(HTML) 11 Page - Micronas |
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11 / 25 page  AMU 2481 MICRONAS INTERMETALL 11 3.4. J17 Digital Deemphasis (Only for S–Data) A J17 digital deemphasis is included in all S bus chan- nels. This is important in the case of D2–MAC mode. For test purposes or for future digital sources without J17 preemphasis this function can be switched off (linear fre- quency response). Fig. 3–2 shows the frequency re- sponse. The control procedure is: J17 deemphasis on: Φ Main Clock 18.432 MHz 17.732 MHz KRJ17 (k28) 116 (0.90625) 117 (0.9140625) KNJ17 (k29) 11 (0.0859375) 10 (0.078125) J17 deemphasis off: Φ Main Clock 18.432 MHz 17.732 MHz KRJ17 (k28) 0 (0.0) 0 (0.0) KNJ17 (k29) 118 (0.921875) 118 (0.921875) dB 5.0 0.0 –5.0 –10.0 –15.0 –20.0 100.0 1000.0 10000.0 Hz Fig. 3–2: J17 deemphasis frequency response 3.5. Medium Quality Oversampling Filter Two oversampling filters in the S bus channels 3 and 4 allow to mix the D2–MAC medium–quality signals (16 kHz sampling rate) with the high–quality signals (32 kHz sampling rate). It is a third–order Cauer–type lowpass with a stopband attenuation of 40 dB. The frequency re- sponse is shown in Fig. 3–3. There are three selection modes regarding the oversampling filters: both filters switched on: KOVERS (k30) = 129 (–0.992 1875) both filters switched off: KOVERS (k30) = 127 (0.992 187 5) one filter is switched on channel 3: KOVERS (k30) = 0 (0.0) dB 0 –10 –20 –30 –40 –50 –60 10 0 Fig. 3–3: Oversampling filter frequency response 2.5 5 7.5 10 12.5 15 kHz 3.6. Audio Mixing Section This basic feature allows to route any input to every out- put and of course to mix different–weighted input chan- nels. Due to the three shift–left (SHAL) at the matrix out- put a coefficient of 16 (= 0.125) corresponds to a 1:1 ratio of input to output. Table 3–2 shows the coefficients and their meaning. Table 3–2: Output matrix coefficients Output Channel Coefficient Connection to Source Ch1: KS1L1 (k02) KS2L1 (k03) KS3L1 (k04) KS4L1 (k05) KP1L1 (k06) KP2L1 (k07) S bus channel 1 S bus channel 2 S bus channel 3 S bus channel 4 PDM 1 PDM 2 Ch2: KS1R1 (k08) KS2R1 (k09) KS3R1 (k10) KS4R1 (k11) KP1R1 (k12) KP2R1 (k13) S bus channel 1 S bus channel 2 S bus channel 3 S bus channel 4 PDM 1 PDM 2 Ch3: KS1L2 (k14) KS2L2 (k15) KS3L2 (k16) KS4L2 (k17) KP1L2 (k18) KP2L2 (k19) S bus channel 1 S bus channel 2 S bus channel 3 S bus channel 4 PDM 1 PDM 2 Ch4: KS1R2 (k20) KS2R2 (k21) KS3R2 (k22) KS4R2 (k23) KP1R2 (k24) KP2R2 (k25) S bus channel 1 S bus channel 2 S bus channel 3 S bus channel 4 PDM 1 PDM 2 |
Аналогичный номер детали - AMU2481 |
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Аналогичное описание - AMU2481 |
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