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PDF TDA9861 Data sheet ( Hoja de datos )
| Número de pieza | TDA9861 | |
| Descripción | Universal HiFi audio processor for TV | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
TDA9861
Universal HiFi audio processor for
TV
Preliminary specification
File under Integrated Circuits, IC02
June 1994
1 page  
Philips Semiconductors
Universal HiFi audio processor for TV
Preliminary specification
TDA9861
FUNCTIONAL DESCRIPTION
The TDA9861 consists of the following functions:
• source select switching block
• loudspeaker channel with effect controls
• headphone channel
• two port outputs for general purpose
• I2C−bus control
Source select switching block
The TDA9861 selects and switches the input signals from
three stereo or six mono sources as there are MAIN, AUX
and SCART (Fig.1) to one of the outputs SCART,
loudspeaker and headphone (crossbar-switching Table 3).
Due to the fact, that the main channel (LINE outputs) is
looped outside the circuit (from pins 9 and 24 to pins 10
and 23), signals can be used as LINE output or to insert a
‘surround sound decoder’.
Loudspeaker channel
Volume control is divided into the parts volume 1 and
volume 2 / balance. The first part (55 dB) controls left and
right channels simultaneously; the second part (23 dB)
controls volume and balance of left and right channels
independently. Treble control provides a control range
from −12 to +12 dB and bass control from −12 to +15 dB.
Extended bass control can be provided by an external
T-network (Fig.1) from −15 to +19 dB (2 dB steps).
Effect controls
‘Linear stereo’, ‘stereo with spatial effect (30% or 52%
anti-phase crosstalk)’ and ‘forced mono with or without
pseudo-stereo effect’ are controlled by three bits. A muting
of 85 dB is provided.
Headphone channel
The headphone channel is only equipped with volume /
balance control. A muting of 85 dB is provided.
I2C-bus control
All settings of control are stored in subaddress registers.
Data transmission is simplified by auto-incrementing the
subaddresses. The on-chip power on reset sets the mute
bit to active, so all 3 stereo outputs are muted.
The muting can be switched off by writing a ‘0’ (non-muted)
into the mute control bits.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
VP
Vn
IO
Ptot
Tstg
Tamb
VESD
PARAMETER
supply voltage (pin 6)
voltage on all pins, ground excluded
output current
at pins 15, 18, 13, 20, 7 and 26
at pins 2 and 31
total power dissipation
storage temperature
operating ambient temperature
electrostatic handling for all pins (note 1)
electrostatic handling for all pins (note 2)
MIN.
0
0
−
−
−
−25
0
−
−
Notes to the Limiting Values
1. Equivalent to discharging a 200 pF capacitor through a 0 Ω series resistor.
2. Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.
MAX.
10
VP
UNIT
V
V
2.5
1.5
850
+150
+70
±300
±2000
mA
mA
mW
°C
°C
V
V
THERMAL RESISTANCE
SYMBOL
Rth j-a
PARAMETER
from junction to ambient in free air
June 1994
5
THERMAL RESISTANCE
60 K/W
5 Page 
Philips Semiconductors
Universal HiFi audio processor for TV
Preliminary specification
TDA9861
Table 2 Bits of data bytes.
FUNCTION OF THE BITS IN TABLE 1
DESCRIPTION
V00 to V05
volume control common for loudspeaker channel
VL0 to VL4
volume control LEFT for loudspeaker channel
VR0 to VR4
volume control RIGHT for loudspeaker channel
BA0 to BA4
bass control for LEFT and RIGHT loudspeaker channel
TR0 to TR3
treble control for LEFT and RIGHT loudspeaker channel
VHL0 to VHL5
volume control LEFT for headphone channel
VHR0 to VHR5
volume control RIGHT for headphone channel
I00 to I03
input selection for headphone channel
I10 to I13
input selection for SCART channel
I20 to I23
input selection for loudspeaker channel
MU0, MU1 and MU2
mute control bits: 0 = non-muted; 1 = muted
EF1, EF2 and ST
special mode control bits
P1 and P2
control bits for ports P1 (pin 2) and P2 (pin 31);
output levels: 0 = LOW; 1 = HIGH
Table 3 Output and input selection by subaddress bytes 07, 08 and 09.
OUTPUT AND INPUT CONTROL BYTES, MUTE INCLUDED (EFFECTS TABLE 4)
SELECT OUTPUT PINS
INPUT GROUP INPUT ADDR
SIGNAL
DATA BYTE TO SUBADDRESS
Loudspeaker channels
output pin 18 output pin 15
SCART channels
output pin 26 output pin 7
headphone channels
output pin 20 output pin 13
SELECT INPUT SIGNAL
PINS
28 28 AUX LEFT
30 30 AUX RIGHT
28 30 AUX STEREO
1 1 SCART LEFT
32 32 SCART RIGHT
1 32 SCART
STEREO
3 3 MAIN LEFT
5 5 MAIN RIGHT
3 5 MAIN STEREO
09
08
07
HEX
Vi 1
Vi 2
Vi 1 and Vi 2
Vi 3
Vi 4
Vi 3 and Vi 4
XB
X9
X7
XA
X5
X6
Vi 5
Vi 6
Vi 5 and Vi 6
XC
XD
X8
EF2 MU2 EF1 ST I23 I22 I21 I20
0 MU1 P1 P2 I13 I12 I11 I10
0 MU0 0 0 I03 I02 I01 I00
BITS OF DATA BYTE
X0
X0
X0
X0
X0
X0
X X1 0 1 1
X X1 0 0 1
X X0 1 1 1
X X1 0 1 0
X X0 1 0 1
X X0 1 1 0
X0
X0
X0
X X1 1 0 0
X X1 1 0 1
X X1 0 0 0
Note
1. X = don’t care
June 1994
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet TDA9861.PDF ] | |
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