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SAA7824 Datasheet(PDF) 66 Page - NXP Semiconductors |
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SAA7824 Datasheet(HTML) 66 Page - NXP Semiconductors |
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66 / 89 page  2003 Oct 01 66 Philips Semiconductors Product specification CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control SAA7824 Table 55 defect_parm parameter: defect detector control Table 56 interrupt_mask parameter: mask to enable interrupt in interrupt status register; RAM address 53H Table 57 time_parameter: timer interrupt values Note 1. The time_parameter values are also used for focus_start_time, motor_start_time1, motor_start_time2, radial_init_time and brake_time. Table 58 phase_shift parameter: focus/radial AGC detection phase shift; RAM address 67H Note 1. The value a is the value programmed in Table 60 as the 6 LSBs of osc_inc. defect_parm Fast filter bandwidth xxxx xx00 3500 Hz xxxx xx01 7000 Hz xxxx xx10 14000 Hz xxxx xx11 reserved for future use defect_parm Slow filter time constant Alpha value xxxx 10xx 16 ms 0.00006 xxxx 11xx 8 ms 0.00012 xxxx 00xx 4 ms 0.00024 xxxx 01xx 2 ms 0.00048 defect_parm Coefficient β value xx00 xxxx 0.25 xx01 xxxx 0.125 xx10 xxxx 0.0625 xx11 xxxx reserved for future use defect_parm Defect detector maximum ON time 00xx xxxx 1.0 ms 01xx xxxx 1.5 ms 10xx xxxx 2.0 ms 11xx xxxx 2.5 ms interrupt_mask Interrupt enabled 0000 0000 no interrupt xxxx xxx1 focus lost xxxx xx1x subcode ready xxxx x1xx subcode absolute seconds changed xxxx 1xxx subcode discontinuity xxx1 xxxx radial error xx1x xxxx autosequencer state changes x1xx xxxx autosequencer error time_parameter value (decimal)(1) Timer interrupt values wait time (ms) 129 ≤ i ≤ 143 4.26 × (i − 128) 144 ≤ i ≤ 159 68.2 + 4.57 × (i − 144) 160 ≤ i ≤ 175 141.4 + 4.92 × (i − 160) 176 ≤ i ≤ 191 224.1 + 5.33 × (i − 176 192 ≤ i ≤ 207 305.4 + 5.82 × (i − 192 208 ≤ i ≤ 223 398.5 + 6.40 × (i − 208) 224 ≤ i ≤ 239 500.8 + 7.11 × (i − 224 2402 ≤ i ≤ 55 614.6 + 8.00 × (i − 240) 0 ≤ i ≤ 15 742.6 + 9.11 × i 16 ≤ i ≤ 31 888.9 + 10.6 × (i − 16) 32 ≤ i ≤ 47 1059 + 12.8 × (i − 32) 48 ≤ i ≤ 63 1263 + 16.0 × (i − 48) 64 ≤ i ≤ 79 1519 + 21.2 × (i − 64) 80 ≤ i ≤ 95 1860 + 32.0 × (i − 80) 96 ≤ i ≤ 111 2372 + 64.0 × (i − 96) 111 3398.0 112...127 infinite phase_shift (decimal) Focus/radial AGC detection phase shift ( µs) (deg) 00 0 1 × a(1) 60.47 180 × (a/128) 2 × a 120.94 180 × (2 × a/128) i × ai × 60.47 180 × (i × a/128) 128 180 −1 × a −60.47 −180 × (a/128) −2 × a −120.94 −180 × (2 × a/128) −i × a −i × 60.47 −180 × (i × a/128) 128 180 |
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