Philips 19HFL3233D/10 Service Manual page 29

7.4.10 Core Power
The circuit around U701 will provide the main 1.1 V power
supply to the MT5366 micro processor.
C707 C707
100N 16V 100N 16V
R714 R714
PWR_ON 1K 1/16W 5% 1K 1/16W 5%
C709 C709
1UF16V 1UF16V
7.4.11 Audio Amplifier (U602)
The TAS5717 is providing the audio amplification to the
speakers and headphone from digital input signals. It's I
signals enter the IC via pins 20 to 24. The IC contains two
AL1O 20K 1/16W 5% 20K 1/16W 5%
AR1O 20K 1/16W 5% 20K 1/16W 5%
AVDD
C682 C682
10uF 10uF
R613 R613
MCLK_1 GND_Sound 22R 1/16W 5% 22R 1/16W 5%
18.2K OHM +-1% 1/16W 18.2K OHM +-1% 1/16W
C677 C677
C676 C676
GND_Sound
LRCLK
SCLK
SDATA0
OSDA0 R663 R663 22R 1/16W 5% 22R 1/16W 5%
OSCL0 R681 R681 22R 1/16W 5% 22R 1/16W 5%
AVDD
DV33
R673 R673
10K 1/16W 5% 10K 1/16W 5%
R688 R688
10K 1/16W 5% 10K 1/16W 5% C695 C695
1UF16V 1UF16V
Q607 Q607
BC847C BC847C
GND_Sound GND_Sound
FB706 FB706
+5V_STB
220R/2000mA 220R/2000mA
1 2
16
VIN
1
VIN
2
VIN
15
EN
6
VSNS
7
COMP
8
RT/CLK
9
SS
C735 C735
10N 50V 10N 50V
OFF ON
C720 C720
3300pF 50V 3300pF 50V
C653 C653
R672 R672 10uF 10uF
GND_Sound
C692 C692
R686 R686 10uF 10uF
GND_Sound
AVDD
C687 C687 C680 C680
10uF 10uF 100N 16V 100N 16V
GND_Sound
R667 R667 R666 R666
470R 1/16W 1% 470R 1/16W 1% 470R 1/16W 1% 470R 1/16W 1%
GND_Sound
C690 C690 C693 C693
4.7nF 50V 4.7nF 50V 4.7nF 50V 4.7nF 50V
C675 C675
100N 16V 100N 16V
GND_Sound
U602 U602
13
AVDD
GND_Sound
14
A_SEL#
MCLK_2
15
MCLK
R675 R675
16
OSC_RES
17
DVSSO
4.7uF 10V 4.7uF 10V
18
VR_DIG
TAS5717 TAS5717
100N 16V 100N 16V
19
PDN#
20
LRCLK
21
SCLK
22
SDIN
23
SDA
24
SCL
GND_Sound
AVDD GND_Sound
C650 C650 GND_Sound
10uF 16V 10uF 16V C674 C674 GND_Sound GND_Sound
100N 16V 100N 16V
GND_Sound
Figure 7-14 Audio Amplifier (U602)
Circuit Descriptions
L701 L701
U701 U701
TPS54319RTE TPS54319RTE 1.5UH 1.5UH
10
PH
C717 C717
11
PH
12 100N 16V 100N 16V
PH
13
BOOT
14
PWRGD
3
GND
4
GND
5
AGND
Figure 7-13 Core Power
separate stereo Class-D amplifiers for the normal speakers as
well as for the headphone. In the headphone plug a signalling
switch is coupled to the main processor which then via I
controls the amplifier.
2
S
R679 R679
20K 1/16W 5% 20K 1/16W 5% HPOUTL
C668 C668 DV33
R676 R676 47P 50V 47P 50V
43K 1% 43K 1%
R650 R650
C664 C664
NC/4K7 1/16W 5% NC/4K7 1/16W 5%
330PF 50V 330PF 50V
HPOUTL
HPOUTR
HP_DET#
R684 R684
20K 1/16W 5% 20K 1/16W 5% HPOUTR
R651 R651
0R05 1/16W 0R05 1/16W
C663 C663
R683 R683 47P 50V 47P 50V
43K 1% 43K 1%
GND_Sound
C666 C666
330PF 50V 330PF 50V
GND_Sound
C632 C632
4.7uF 25V 4.7uF 25V
48
HP_PWML
47
HP_PWMR
46
PVDD_AB
GND_Sound
45
BST_A
C683 33N 50V C683 33N 50V
44
OUT_A
R669 R669
10R 1/16W 5% 10R 1/16W 5%
43
GND_Sound
PGND_AB
R654 R654
42
OUT_B
10R 1/16W 5% 10R 1/16W 5%
41
BST_B
C691 33N 50V C691 33N 50V
40
BST_C
C699 33N 50V C699 33N 50V
R653 R653
39
OUT_C
10R 1/16W 5% 10R 1/16W 5%
38
PGND_CD
GND_Sound
37
OUT_D
C685 C685
33N 50V 33N 50V R652 R652
10R 1/16W 5% 10R 1/16W 5%
C681 C681
1UF16V 1UF16V C658 C658
PVDD 1N 50V 1N 50V
C633 C633
GND_Sound C655 C655 4.7uF 25V 4.7uF 25V
100N 50V 100N 50V
GND_Sound
TPM8.2E LA
C721 C721
R718 R718 22UF 16V 22UF 16V
300R 1/16W 1% 300R 1/16W 1%
attach
R720 R720
12K 1% 1/16W 12K 1% 1/16W
R721 R721
33Kohm 1/16W +/-1% 33Kohm 1/16W +/-1%
HEADPHONE R/L OUTPUT
CN602 CN602
5
4
R659 R659 4R7 1/16W 5% 4R7 1/16W 5% 2
R658 R658 4R7 1/16W 5% 4R7 1/16W 5% 3
6
7
1
C651 C651
C652 C652
PHONEJACK PHONEJACK
100N 16V 100N 16V 100N 16V 100N 16V
GND_Sound GND_Sound
GND_Sound
PVDD
10.5mm High
+ + C656 C656
220UF 25V 220UF 25V
L604 L604
47UH 47UH
LOUT+
C665 C665
<9.2mm High
1N 50V 1N 50V
C661 C661
GND_Sound
330NF 16V 330NF 16V
C660 C660
GND_Sound
1N 50V 1N 50V
L603 L603
GND_Sound
47UH 47UH C662 C662
330NF 16V 330NF 16V
LOUT-
ROUT+
L602 L602
47UH 47UH
C698 C698
GND_Sound
330NF 16V 330NF 16V
C659 C659
GND_Sound
1N 50V 1N 50V L601 L601
47UH 47UH C678 C678
330NF 16V 330NF 16V
ROUT-
GND_Sound
7. EN 29
DV11 VCCK
C713 C713 C715 C715
22UF 16V 22UF 16V 100N 50V 100N 50V
attach
19120_211_110518.eps
110518
2
S
CN601 CN601
LOUT+
4
LOUT-
3
ROUT+
2
ROUT-
1
R/A 2.5 MM
19120_218_110519.eps
110531
2011-Jun-01