Sharp LC-32P70E (serv.man10) Service Manual ▷ View online
74
LC-26GA5E
LC-32GA5E
LC-26P70E
LC-32P70E
LC-37P70E
2.3. IC301, IC302 (VHITDA8931T-1Y)
2.3.1. Block Diagram
9397 750 13847
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Preliminary data sheet
Rev. 01 — 14 January 2004
3 of 31
Philips Semiconductors
TDA8931
Power comparator 1
× 20 W
6. Block diagram
Fig 1. Block diagram
001aab807
TDA8931
UVP
HEAT SPREADER
CONTROL
comparator
CONTROL
DRIVER
HIGH
STABILIZER
12V
BOOT
V
V
DDP
17
18
18
OUT
16
V
SSP
15
STABI
V
SSD
V
DDP
V
SSP
14
HVP
13
V
DDP
V
SSP
HVPI
19
DIAG
8
12
1
10
11
20
V
SSD
V
SSD
V
SSD
V
SSD
DRIVER
LOW
OVP
OVP
9
CGND
7
ENABLE
6
POWERUP
3
INN
4
INP
OCP
OTP
2
V
SSA
5
V
DDA
ODP
75
LC-26GA5E
LC-32GA5E
LC-26P70E
LC-32P70E
LC-37P70E
2.3.2. Pinning
9397 750 13847
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Preliminary data sheet
Rev. 01 — 14 January 2004
4 of 31
Philips Semiconductors
TDA8931
Power comparator 1
× 20 W
7. Pinning information
7.1 Pinning
7.2 Pin description
Fig 2. Pin configuration
TDA8931
V
SSD
V
SSD
V
SSA
HVPI
INN
V
DDP
INP
BOOT
V
DDA
OUT
POWERUP
V
SSP
ENABLE
STABI
DIAG
HVP
CGND
OVP
V
SSD
V
SSD
001aab811
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
12
11
11
14
13
13
16
15
15
18
17
17
20
19
19
Table 3:
Pin description
Symbol
Pin
Description
V
SSD
1
negative digital supply voltage; heat spreader
V
SSA
2
negative analog supply voltage
INN
3
inverting input
INP
4
non inverting input
V
DDA
5
positive analog supply voltage
POWERUP
6
power-up input
ENABLE
7
enable input
DIAG
8
diagnostic output
CGND
9
control ground; reference ground for pins POWERUP, ENABLE and DIAG
V
SSD
10
negative digital supply voltage; heat spreader
V
SSD
11
negative digital supply voltage; heat spreader
OVP
12
overvoltage protection reference input
HVP
13
half supply voltage output for charging SE capacitor
STABI
14
decoupling of internal stabilizer
V
SSP
15
negative power supply voltage
OUT
16
PWM output
BOOT
17
bootstrap capacitor connection
V
DDP
18
positive power supply voltage
HVPI
19
half supply voltage output for reference voltage of input circuitry
V
SSD
20
negative digital supply voltage; heat spreader
76
LC-26GA5E
LC-32GA5E
LC-26P70E
LC-32P70E
LC-37P70E
2.4. IC201 (VHITDA9886+-1Y)
2.4.1. Block Diagram
2003 Oct 02
7
Philips Semiconductors
Product specification
I
2
C-bus controlled single and multistandard
alignment-free IF-PLL demodulators
TDA9885; TDA9886
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6
BLOCK DIAGRAM
handbook, full pagewidth
MHC108
DIGITAL VCO CONTROL
AFC DETECTOR
RC VCO
VIF-PLL
VIF-AGC
TUNER AGC
SUPPLY
SIF-AGC
AUDIO PROCESSING
AND SWITCHES
NARROW-BAND
FM-PLL DEMODULATOR
SINGLE REFERENCE QSS MIXER
INTERCARRIER MIXER
AND AM DEMODULATOR
SOUND CARRIER
TRAPS
4.5 to 6.5 MHz
TAGC
C
VAGC(pos)
C
AGC(neg)
C
BL
VAGC
(1)
TOP
14 (15)
VPLL
19 (21)
9 (8)
16 (17)
15 (16)
21 (23)
4 (2)
10 (9)
11 (10)
12 (11)
18 (20)
20 (22)
2 (31)
1 (30)
(18) 17
(7) 8
(3) 5
(4) 6
external reference signal
or 4 MHz crystal
REF
AFC
AUD
CVBS
audio output
video output
: 2 V (p-p)
[1.1 V (p-p) without trap]
C
AF
SIOMAD
SDA
SCL
MAD
V
P
C
AGC
(6, 12, 13, 14, 17,
19, 25, 28, 29, 32)
13
n.c.
AGND
7 (5)
DGND
OUTPUT
PORTS
I
2
C-BUS TRANSCEIVER
22 (24)
3 (1)
OP1
OP2
FMPLL
DEEM
AFD
sound intercarrier output
and MAD select
FM-PLL
filter
VIF-PLL
filter
de-emphasis
network
VIF2
VIF1
24 (27)
23 (26)
SIF2
SIF1
TDA9885
TDA9886
Fig.1 Block diagram.
(1)
Not connected for TDA9885.
Pin numbers for TDA9885HN and TDA9886HN in parenthesis.
77
LC-26GA5E
LC-32GA5E
LC-26P70E
LC-32P70E
LC-37P70E
2003 Oct 02
8
Philips Semiconductors
Product specification
I
2
C-bus controlled single and multistandard
alignment-free IF-PLL demodulators
TDA9885; TDA9886
7
PINNING
SYMBOL
PIN
DESCRIPTION
TDA9885T
TDA9885TS
TDA9886T
TDA9886TS
TDA9885HN TDA9886HN
VIF1
1
1
30
30
VIF differential input 1
VIF2
2
2
31
31
VIF differential input 2
n.c.
−
−
32
32
not connected
OP1
3
3
1
1
output port 1; open-collector
FMPLL
4
4
2
2
FM-PLL for loop filter
DEEM
5
5
3
3
de-emphasis output for capacitor
AFD
6
6
4
4
AF decoupling input for capacitor
DGND
7
7
5
5
digital ground
n.c.
−
−
6
6
not connected
AUD
8
8
7
7
audio output
TOP
9
9
8
8
tuner AGC TakeOver Point (TOP) for resistor
adjustment
adjustment
SDA
10
10
9
9
I
2
C-bus data input and output
SCL
11
11
10
10
I
2
C-bus clock input
SIOMAD
12
12
11
11
sound intercarrier output and MAD select with
resistor
resistor
n.c.
−
−
12
12
not connected
n.c.
13
13
13
13
not connected
n.c.
−
−
14
14
not connected
TAGC
14
14
15
15
tuner AGC output
REF
15
15
16
16
4 MHz crystal or reference signal input
VAGC
−
16
−
17
VIF-AGC for capacitor
n.c.
16
−
17
−
not connected
CVBS
17
17
18
18
composite video output
n.c.
−
−
19
19
not connected
AGND
18
18
20
20
analog ground
VPLL
19
19
21
21
VIF-PLL for loop filter
V
P
20
20
22
22
supply voltage
AFC
21
21
23
23
AFC output
OP2
22
22
24
24
output port 2; open-collector
n.c.
−
−
25
25
not connected
SIF1
23
23
26
26
SIF differential input 1 and MAD select with
resistor
resistor
SIF2
24
24
27
27
SIF differential input 2 and MAD select with
resistor
resistor
n.c.
−
−
28
28
not connected
n.c.
−
−
29
29
not connected
2.4.2. Pinning
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