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TDA6508TT 데이터시트(PDF) 11 Page - NXP Semiconductors |
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TDA6508TT 데이터시트(HTML) 11 Page - NXP Semiconductors |
11 / 42 page 2005 Mar 25 11 Philips Semiconductors Product specification 3-band mixer/oscillator and PLL for terrestrial tuners TDA6508; TDA6508A; TDA6509; TDA6509A Table 6 Read data format Note 1. MSB is transmitted first. Table 7 Description of the bits used in Table 6 Table 8 Digital outputs for analog to digital converter (note 1) Note 1. Accuracy is ±0.03 × VCC. 8.4 Power-on reset The threshold level for the power-on reset supply voltage VPOR is set to 3.2 V at room temperature. Below this threshold, the device is reset to the power-on state. The following actions take place In the power-on state: • The charge-pump current is set to 100 µA • Test bits T2, T1 and T0 are set to logic 001; the charge-pump can either sink or source current • The Weak signal booster is disabled • All ports are off and the HIGH band is selected by default. NAME BYTE BIT MSB(1) LSB Address byte ADB 1 1 0 0 0 MA1 MA0 R/W=1 Status byte SB POR FL 1 1 1 A2 A1 A0 BIT DESCRIPTION MA1 and MA0 programmable address bits; see Table 3 R/W read/write mode selection; 1 = read mode POR Power-on reset flag: 0: after end of the first read sequence 1: at Power-on FL in-lock flag: 0: loop is not locked 1: loop is locked A2, A1 and A0 digital outputs of the 5-level ADC; see Table 8 A2 A1 A0 VOLTAGE APPLIED TO PIN ADC 0000 VCC to 0.15 VCC 0 0 1 0.15 VCC to 0.3 VCC 0 1 0 0.3 VCC to 0.45 VCC 0 1 1 0.45 VCC to 0.6 VCC 1 0 0 0.6 VCC to 1 VCC |
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