TDA8745 Datasheet, PDF (14/40 Pages) NXP Semiconductors – Satellite sound receiver with I2C-bus control

Philips Semiconductors
Satellite sound receiver with I²C-bus control
Preliminary specification
TDA8745
Table 9 TUN9 to TUN0; tuning
TUN9
i1
0
0
0
1
1
1
1
1
1
1
1
1
TUN8
i0
1
1
1
0
0
0
0
1
1
1
1
1
TUN7
t7
1
1
1
0
1
1
1
0
0
1
1
1
TUN6 TUN5 TUN4 TUN3
t6
t5
t4
t3
0
1
0
1
0
1
0
1
0
1
0
1
0110101111 to 1001010011
1
0
1
0
1001010101 to 1010000101
0
0
0
0
1010000111 to 1010110111
0
1
1
1
1010111001 to 1011101011
1
1
0
1
1011101101 to 1100001111
0
0
1
0
1100010001 to 1100110011
0
1
1
0
1100110101 to 1111111100
1
1
1
1
1
1
1
1
1
1
1
1
TUN2
t2
1
1
1
1
1
0
1
0
1
1
1
1
TUN1
t1
0
0
1
0
1
0
0
0
0
0
1
1
TUN0
t0
0
1
0
0
0
0
0
0
0
1
0
1
10.7 IF
(MHz)
10.52 IF
(MHz)
3.82
4.00
3.83
4.01
3.84
4.02
3.85 to 5.49 4.03 to 5.67
5.50
5.68
5.51 to 5.99 5.69 to 6.17
6.00
6.18
6.01 to 6.49 6.19 to 6.67
6.50
6.68
6.51 to 7.01 6.69 to 7.19
7.02⁽¹⁾
7.20⁽¹⁾
7.03 to 7.37 7.21 to 7.55
7.38
7.56
7.39 to 7.73 7.57 to 7.91
7.74
7.92
7.75 to 9.74 7.93 to 9.92
9.75
9.93
9.76
9.94
9.77
9.95
Note
1. This is the situation after POR.
The frequency range of synthesizer is shown in Table 10.
Table 10 Frequency range of synthesizer
PARAMETER
Synthesizer frequency range
Mixer input frequency range
Tuning range
RANGE
(MHz)
29.04 to 40.94 (in 20 kHz grid); note 1
14.52 to 20.47 (in 10 kHz grid); note 2
3.82 to 9.77 (in 10 kHz grid; 10.7 MHz IF); note 3
Notes
1. Tuning the synthesizer below 29.04 MHz may be possible, but is not guaranteed.
2. The mixing frequency (f_mix) can be calculated with equation:
f_mix = (1024 + 512[TUN9] + 256[TUN8] + 128[TUN7] + 64[TUN6] + 32[TUN5] + 16[TUN4] + 8[TUN3] + 4[TUN2] +
2[TUN1] + [TUN0]) × 10 kHz.
3. Tuning frequency = mixer input frequency − 10.7 MHz.
1996 Mar 11
14