TDA6650TT Datasheet, PDF (10/55 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 4 Description of write data format bits
BIT
DESCRIPTION
A
acknowledge
MA1 and MA0
programmable address bits; see Table 5
R/W
N14 to N0
T/A
logic 0 for write mode
programmable LO frequency; N = N14 × 2¹⁴ + N13 × 2¹³ + N12 × 2¹² + ... + N1 × 2¹ + N0
test/AGC bit
T/A = 0: the next six bits sent are AGC settings
T/A = 1: the next six bits sent are test and reference divider ratio settings
T2, T1 and T0
test bits; see Table 6
R2, R1, and R0
reference divider ratio and programmable frequency step; see Table 7
ATC
AGC current setting and time constant; capacitor on pin AGC = 150 nF
ATC = 0: AGC current = 220 nA; AGC time constant = 2 s
ATC = 1: AGC current = 9 µA; AGC time constant = 50 ms
AL2, AL1 and AL0 AGC take-over point bits; see Table 8
CP2, CP1 and CP0 charge pump current; see Table 9
BS5, BS4, BS3,
BS2 and BS1
PMOS ports control bits
BSn = 0: corresponding port is off, high-impedance state (status at Power-on reset)
BSn = 1: corresponding port is on; V_O = V_CC − V_DS(sat)
8.1.1 I²C-BUS ADDRESS SELECTION
The device address contains programmable address bits MA1 and MA0, which offer the possibility of having up to four
MOPLL ICs in one system. Table 5 gives the relationship between the voltage applied to the AS input and the MA1 and
MA0 bits.
Table 5 Address selection
VOLTAGE APPLIED TO PIN AS
0 V to 0.1V_CC
0.2V_CC to 0.3V_CC or open-circuit
0.4V_CC to 0.6V_CC
0.9V_CC to V_CC
MA1
0
0
1
1
MA0
0
1
0
1
2004 Mar 22
10