TDA6650TT Datasheet, PDF (15/55 Pages) NXP Semiconductors – 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)

Philips Semiconductors
5 V mixer/oscillator and low noise PLL synthesizer
for hybrid terrestrial tuner (digital and analog)
Product specification
TDA6650TT;
TDA6651TT
Table 14 ADC levels
VOLTAGE APPLIED TO PIN ADC⁽¹⁾
A2
A1
A0
0.6V_CC to V_CC
0.45V_CC to 0.6V_CC
0.3V_CC to 0.45V_CC
0.15V_CC to 0.3V_CC
0 to 0.15V_CC
1
0
0
0
1
1
0
1
0
0
0
1
0
0
0
Note
1. Accuracy is ±0.03V_CC. Bit BS5 must be set to logic 0 to disable the BS5 output port. The BS5 output port uses the
same pin as the ADC and can not be used when the ADC is in use.
8.3 Status at Power-on reset
At power on or when the supply voltage drops below approximately 2.85 V (at T_amb = 25 °C), internal registers are set
according to Table 15.
At power on, the charge pump current is set to 580 µA, the test bits T[2:0] are set to 110 which means that the charge
pump is sinking current, the tuning voltage output is disabled and the ALBC function is disabled. The XTOUT buffer is
on, driving the 4 MHz signal from the crystal oscillator and all the ports are off. As a consequence, the high band is
selected by default.
Table 15 Default setting at Power-on reset
NAME
BYTE
MSB
BIT⁽¹⁾
LSB
Address byte
1
1
1
0
0
0
MA1
MA0
X
Divider byte 1 (DB1) 2
0
N14 = X N13 = X N12 = X N11 = X N10 = X N9 = X N8 = X
Divider byte 2 (DB2) 3 N7 = X N6 = X N5 = X N4 = X N3 = X N2 = X N1 = X N0 = X
Control byte 1 (CB1) 4
1
T/A = X; T2 = 1 T1 = 1 T0 = 0 R2 = X R1 = X R0 = X
note 2
1
T/A = X;
0
note 3
0
ATC = 0 AL2 = 0 AL1 = 1 AL0 = 0
Control byte 2 (CB2) 5 CP2 = 1 CP1 = 1 CP0 = 1 BS5 = 0 BS4 = 0 BS3 = 0 BS2 = 0 BS1 = 0
Notes
1. X means that this bit is not set or reset at Power-on reset.
2. The next six bits are written, when bit T/A = 1 in a write sequence.
3. The next six bits are written, when bit T/A = 0 in a write sequence.
2004 Mar 22
15