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SAA7824 Datasheet(PDF) 63 Page - NXP Semiconductors |
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SAA7824 Datasheet(HTML) 63 Page - NXP Semiconductors |
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63 / 89 page  2003 Oct 01 63 Philips Semiconductors Product specification CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control SAA7824 Table 43 sledge_pulse2 parameter: sledge pulse height; RAM address 64H Table 44 vel_parm1 parameter: gain constant for short jump, integrator cross-over frequency during jump; RAM address 1FH Table 45 vel_parm2 parameter: time constant during sledge access/actuator access, minimum jump speed during short jump; RAM address 32H sledge_pulse2 Hex Pulse height 0111 1111 78 full-scale, positive .... .... 0100 0000 40 half-scale, positive a level = a/7F, positive 0000 0000 00 zero .... .... 1000 0000 80 full-scale, negative vel_parm1 Hex Gain constant for short jump Kv vel_prop 0000 xxxx 0x 0.1875 1000 xxxx 8x 0.4375 0100 xxxx 4x 0.6875 1100 xxxx Cx 0.9375 0010 xxxx 2x 1.1875 1010 xxxx Ax 1.4375 0110 xxxx 6x 1.6875 1110 xxxx Ex 1.9375 0001 xxxx 1x 2.1875 1001 xxxx 9x 2.4375 0101 xxxx 5x 2.6875 1101 xxxx Dx 2.9375 0011 xxxx 3x 3.1875 1011 xxxx Bx 3.4375 0111 xxxx 7x 3.6875 1111 xxxx Fx 3.9375 vel_int Integrator cross-over frequency during jump f0 xxxx 0000 x0 integrator hold xxxx 0001 x1 10.0/Kv xxxx 0010 x2 20.0/Kv xxxx 0011 x3 30.0/Kv ii × 10.0/Kv xxxx 1111 xF 150.0/Kv vel_parm2 Hex Deceleration time fast actuator steered ms Deceleration time sledge steered ms vel_setp (binary) 0000 xxxx 0x 7.5 7.5 1000 xxxx 8x 8.2 8.2 0100 xxxx 4x 9 9 1100 xxxx Cx 9.7 9.7 0010 xxxx 2x 10.5 10.5 1010 xxxx Ax 11.2 11.2 0110 xxxx 6x 12.5 12.5 1110 xxxx Ex 14 14 0001 xxxx 1x 15.5 15.5 1001 xxxx 9x 16.5 16.5 0101 xxxx 5x 20.7 20.7 1101 xxxx Dx 25 25 0011 xxxx 3x 31.2 31.2 1011 xxxx Bx 41 41 0111 xxxx 7x 63 63 1111 xxxx Fx 128 128 vel_min V1 minimum jump speed kHz xxxx 0000 x0 0.0 xxxx 0001 x1 1.0 xxxx 0010 x2 2.0 xxxx 0011 x3 3.0 xxxx 0100 x4 4.0 xxxx 0101 x5 5.0 xxxx 0110 x6 6.0 xxxx 0111 x7 7.0 xxxx 1xxx undefined vel_parm1 Hex Gain constant for short jump Kv vel_prop |
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