Nvm (U405); Reset (U406); Arc (Hdmi); Audio Amplifier (U602) - Philips 32PFL3507/56 Service Manual

EN 30 7. TPM8.31A LA
7.4.3

NVM (U405)

The system NVM is a 128 KB IC. It contains all system settings.
DVDD3V3
C454
220N16V
U405
1 8
E0 VCC
2 7
E1 WC
3 6
E2 SCL
4 5
VSS SDA
CAT24C128Y I
Q401
I2C address at A0
PMBS3904
Figure 7-6 NVM (U405)
7.4.4

Reset (U406)

When the input voltage for the MT5301B main processor drops
below 2.93 V, a system reset will be enforced by U406.
C621
0.1uF 50V
A_Reset
AOSDATA0
AOLRCK
AOBCLK
AOMCLK
PLL_GND
R629
0R05 1/16W
Aud3A3
Aud3V3
7.4.7 Tuner power
G9084TU3U provides the tuner power of approximately 5 V.
2012-Jun-08
Circuit Descriptions
CN402
NC CONN
5VSB
R461 R462 R463
10K 1/16W 5% 4.7K 1% 4.7K 1%
OSCL0
OSDA0
R464 2.2K 1/16W
MEMORY _WP#
H: Write
R465
10K 1/16W 5%
L: Write Protect
19170_212_110705.eps
Aud3V3
37
Thermal Pad
36
VDD_DIG
35
GND_DIG
Aud_SCL
34
SCL
Aud_SDA
TP45 33
SDA
32
INT_LINE
31
RESET
30
SDI
29
LRCKI
28
BICKI
27
XTI
26
GND_PLL
PLL_FILT
C639 25
FILTER_PLL
R630 24
VDD_PLL
PWDN
23
PWRDN
C645 22
GND_DIG
21
VDD_DIG
TW
0.1uF 50V 20
TWARN/OUT4A
EAPD
2R2 1/16W 5% 19
EAPD/OUT4B
0.1uF 50V
STA339BWTR
Figure 7-9 Audio Amplifier (U602)
NC\5K1 1/16W 5%
ORESET#
C455
NC\100N 16V
110705
7.4.5

ARC (HDMI)

ARC (audio return channel) supports HDMI A only, if it gets the
ARC command from CEC, then the U412 will be enable and
SPDIF will output via HDMI A pin 14.
ARC_ON
SPDIF_OUT
10K 1/16W 5%
7.4.6

Audio Amplifier (U602)

The platform use I
U602
1 C623
GND_SUB
2 C622
SA
3 0.1uF 50V 0.1uF 50V
TEST_MODE
4
VSS
5
VCC_REG
OUT2B
6
OUT2B
7
GND2
8
VCC2
OUT2A
9
OUT2A
OUT1B
10
OUT1B
11
VCC1
12
GND1
OUT1A
13 C643
OUT1A
14 C642
GND_REG
15 0.1uF 50V
VDD
16 0.1uF 50V
CONFIG
DDX3B
17
OUT3B
DDX3A
18
OUT3A
back to
div. table
3V3SB
3V3SB
R469
0R05 1/16W
1 3
GND VCC
R467
U406
MAX809STRG
R468
100K 1/16W
Figure 7-7 Reset (U406)
DVDD3V3
NC\10K 1/16W 5%
R570
U412
1 5
OE VCC
2
A R571
3 4
GND Y
180OHM 1/10W
R569 SN74LVC1G125DBVR
R572
82R 1/10W 5%
Figure 7-8 ARC (HDMI)
2
S to link audio amplifier IC.
C625
1U 50V
C630
+ +
100UF 35V
C641 C644
1U 50V 0.1uF 50V
5VSB
R470
NC 1K 1/10W 1%
C456 R471
100N 16V NC 6K8 1/10W 1%
19170_213_110705.eps
110705
C511
ARC
1UF16V
R573
100K 1/10W 5%
19170_216_110705.eps
110718
+24V_AMP
FB609
2 1
120R/6000mA
C631
100UF 35V
+
C685
100UF 35V
19170_214_110705.eps
110705