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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA6500 датащи(PDF) 7 Page - NXP Semiconductors |
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TDA6500 датащи(HTML) 7 Page - NXP Semiconductors |
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7 / 37 page  9397 750 15057 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 14 June 2005 7 of 37 Philips Semiconductors TDA6500; TDA6501 5 V mixer/oscillator and synthesizer for PAL and NTSC standards pulse, the control register is loaded with data from byte CB after the 8th SCL clock pulse, the band switch register is loaded with data of byte BB after the 8th SCL clock pulse and the auxiliary register is loaded with data of byte AB after the 8th SCL clock pulse. To program the AGC take-over point setting and the AGC current to a different value than the default value, an additional byte, the auxiliary byte, has to be sent. To this end, the auxiliary byte is preceded by a control byte with the test bits T2, T1 and T0 set to logic 011 (see Table 8). [1] Auxiliary byte AB replaces band switch byte BB when bit T2 = 0, T1 = 1 and T0 = 1. Table 5: I2C-bus data format for write mode Name Byte Bit Ack MSB LSB Address byte ADB 11000MA1 MA0 R/W=0 A Divider byte 1 DB1 0 N14 N13 N12 N11 N10 N9 N8 A Divider byte 2 DB2 N7 N6 N5 N4 N3 N2 N1 N0 A Control byte CB 1 CP T2 T1 T0 RSA RSB OS A Band switch byte BB 0 P6 0 P4 P3 P2 P1 P0 A Auxiliary byte [1] AB ATC AL2 AL1 AL0 0000 A Table 6: Description of bits shown in Table 5 Symbol Description A acknowledge MA1 and MA0 programmable address bits; see Table 7 R/W logic 0 for write mode N14 to N0 programmable divider bits; N = (N14 × 214) + (N13 × 213) + ... + (N1 × 21)+N0 CP charge pump current CP = 0: the charge pump current is 60 µA CP = 1: the charge pump current is 280 µA (default) T2, T1 and T0 test bits; see Table 8 RSA and RSB reference divider ratio select bits; see Table 9 OS tuning amplifier control bit OS = 0: normal operation; tuning voltage is on OS = 1: tuning voltage is off; high-impedance state (default) P6 and P4 NPN port control bits Pn = 0: port n is off; high-impedance state (default) Pn = 1: buffer n is on; VO =VCE(sat) P3 to P0 PMOS port control bits Pn = 0: port n is off; high-impedance state (default) Pn = 1: buffer n is on; VO =VCC − VDS(sat) ATC AGC time constant ATC = 0: IAGC = 220 nA; ∆t = 2 s with C = 160 nF (default) ATC = 1: IAGC =9 µA; ∆t = 50 ms with C = 160 nF AL2, AL1 and AL0 AGC take-over point bits; see Table 10 |
Аналогичный номер детали - TDA6500 |
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Аналогичное описание - TDA6500 |
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