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PDF TDA8745 Data sheet ( Hoja de datos )
| Número de pieza | TDA8745 | |
| Descripción | Satellite sound receiver with I2C-bus control | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
TDA8745
Satellite sound receiver with
I2C-bus control
Preliminary specification
Supersedes data of 1995 Mar 08
File under Integrated Circuits, IC02
1996 Mar 11
1 page  
Philips Semiconductors
Satellite sound receiver with I2C-bus control
Preliminary specification
TDA8745
PINNING
SYMBOL
CDC R
SLF
BASEBAND IN
VP1
IF OUT
SYNGND
IN-5
IN-6
IN-1
HFGND
IN-2
ADDsel
IN-3
I2CGND
IN-4
VP2
SCL
SDA
Vref
VP3
OM
OR
OL
EXTR
EXTL
CATT/REC R
RECTR
CNR D R
CD R
DEEM OUT R
CCL R
AFGND
CCL L
DEEM OUT L
CD L
CNR D L
RECTL
CATT/REC L
PIN
SDIP42 QFP44
1 39
2 41
3 42
4 43
5 44
61
72
83
94
10 5
11 6
12 7
13 8
14 9
15 10
16 11
17 12
18 13
19 14
20 15
21 17
22 18
23 19
24 20
25 21
26 22
27 23
28 24
29 25
30 26
31 27
32 28
33 29
34 30
35 31
36 32
37 33
38 34
DESCRIPTION
DC decoupling capacitor (right channel)
synthesizer loop-filter
baseband input to mixer
synthesizer and mixer supply voltage (+5 V)
intercarrier output from mixer
synthesizer and mixer ground
intercarrier input 5/port expansion output 1
intercarrier input 6/port expansion output 2
Intercarrier input 1
HF ground
intercarrier input 2
I2C-bus address selection
Intercarrier input 3
I2C-bus ground
intercarrier input 4
I2C-bus supply voltage (+5 V)
I2C-bus serial clock input
I2C-bus serial data input/output
decoupling capacitor for reference voltage
general supply voltage (+12 V)
mono channel output [1⁄2(l + r)]
right channel output
left channel output
external audio input (right channel)
external audio input (left channel)
attack/recovery capacitor (right channel)
rectifier DC decoupling (right channel)
noise reduction de-emphasis capacitor (right channel)
de-emphasis capacitor (right channel)
de-emphasis output (right channel)
audio pass-through input (right channel)
AF ground
audio pass-through input (left channel)
de-emphasis output (left channel)
de-emphasis capacitor (left channel)
noise reduction de-emphasis capacitor (left channel)
rectifier DC decoupling (left channel)
attack/recovery capacitor (left channel)
1996 Mar 11
5
5 Page 
Philips Semiconductors
Satellite sound receiver with I2C-bus control
Preliminary specification
TDA8745
I2C-BUS PROTOCOL
Table 1 Slave receiver/transmitter address: D4 or D6 (HEX)
BIT 7
1
BIT 6
1
BIT 5
0
BIT 4
1
BIT 3
0
BIT 2
1
Notes
1. AS bit defined by level at address select (pin 12); 0 V = logic 0; 5 V = logic 1.
2. R/W = 0; TDA8745 is receiver (microcontroller is master transmitter).
R/W = 1; TDA8745 is transmitter (microcontroller is master receiver).
BIT 1
AS(1)
TDA8745 receiver use
In the receiver mode the device has four subaddresses with auto-increment, as shown in Tables 2 to 5.
Table 2 Input byte SA: 00; situation after POR
IL2 IL1 IL0 IR2 IR1 IR0 TUN9
i7 i6 i5 i4 i3 i2 i1
0000011
Table 3 Tuning byte SA: 01; situation after POR
TUN7
t7
1
TUN6
t6
1
TUN5
t5
1
TUN4
t4
0
TUN3
t3
1
TUN2
t2
1
TUN1
t1
0
Table 4 Select byte SA: 02; situation after POR
TEST
BB
OS1
OS0
PDM
PE
OML
s7 s6 s5 s4 s3 s2 s1
0000001
Table 5 Audio byte SA: 03; situation after POR
LEV3
LEV2
LEV1
LEV0
NR
DEM1
DEM0
a7 a6 a5 a4 a3 a2 a1
1100111
TDA8745 transmitter use
No subaddress.
Table 6 Read byte
PDL
PDR
−
−
−
−
−
r7 r6 r5 r4 r3 r2 r1
0 or 1
0 or 1
1
1
1
1
1
BIT 0
R/W(2)
TUN8
i0
0
TUN0
t0
0
OMR
s0
1
BPFN
a0
0
POR
r0
0 or 1
1996 Mar 11
11
11 Page | ||
| Páginas | Total 40 Páginas | |
| PDF Descargar | [ Datasheet TDA8745.PDF ] | |
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