TDA6650TT Datasheet, PDF (49/55 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 18 Sequence to program only the main divider ratio
START
S
ADDRESS BYTE
C2
A
DIVIDER BYTE 1
12
A
DIVIDER BYTE 2
C0
A
STOP
P
Table 19 Sequence to change the charge pump current, the ports and the test mode. If the reference divider ratio is
changed, it is necessary to send the DB1 and DB2 bytes
START
ADDRESS BYTE
CONTROL BYTE 1⁽¹⁾
CONTROL BYTE 2
STOP
S
C2
A
CA
A
A4
A
P
Note
1. Control byte 1 with bit T/A = 1, to program test bits T2, T1 and T0 and reference divider ratio bits R2, R1 and R0.
Table 20 Sequence to change the test mode. If the reference divider ratio is changed, it is necessary to send the DB1
and DB2 bytes
START
ADDRESS BYTE
CONTROL BYTE 1⁽¹⁾
STOP
S
C2
A
CA
A
P
Note
1. Control byte 1 with bit T/A = 1, to program test bits T2, T1 and T0 and reference divider ratio bits R2, R1 and R0.
Table 21 Sequence to change the charge pump current, the ports and the AGC data
START
ADDRESS BYTE
CONTROL BYTE 1⁽¹⁾
CONTROL BYTE 2
S
C2
A
82
A
A4
A
STOP
P
Note
1. Control byte 1 with bit T/A = 0, to program AGC time constant bit ATC and AGC take-over point bits AL2, AL1
and AL0.
Table 22 Sequence to change only the AGC data
START
S
ADDRESS BYTE
C2
A
CONTROL BYTE 1⁽¹⁾
84
A
STOP
P
Note
1. Control byte 1 with bit T/A = 0, to program AGC time constant bit ATC and AGC take-over point bits AL2, AL1
and AL0.
Table 23 Sequence to program the main divider, the ALBC on and the test modes in normal mode with XTOUT buffer
off.
STAR
T
S
ADDRESS
BYTE
C2
A
DIVIDER
BYTE 1
12
A
DIVIDER
BYTE 2
C0
A
CONTROL
BYTE 1⁽¹⁾
DA
A
CONTROL
BYTE 2
00
A
CONTROL
BYTE 1
C2
A
STOP
P
Note
1. Control byte 1 with bit T/A = 1, to program test bits T2, T1 and T0 and reference divider ratio bits R2, R1 and R0.
2004 Mar 22
49