Haier HLTDC19 - 19" LCD TV User manual

SERVICE MANUAL
FOR HLTDC19
TFT-LCD TV

Content
CONTENTS -----------------------------------------------------------------------------------------------1
Main Unit Description----------------------------------------------------------------------------------2
Features----------------------------------------------------------------------------------------------------4
Warning and Cautions---------------------------------------------------------------------------------6
Replacement of Memory IC--------------------------------------------------------------------------8
Net Dimension-------------------------------------------------------------------------------------------9
Remote Controller Functions----------------------------------------------------------------------10
ICs function description ----------------------------------------------------------------------------13
Block Diagram------------------------------------------------------------------------------------------21
Trouble Shooting---------------------------------------------------------------------------------------26

Front Panel Controls
Control Panel Function
TV/AV MENU VOL- VOL+ CH- CH+ POWER
2345
1. Power supplyswitch
2.TV/AV PC/COMPONENT/AV/SV/TV/DVD
3. MENU Press to select the main menu
4. VOL- Volume down/ Left orientation to adjust the item inthe OSD
VOL+ Volume up / Right orientation to adjust the item/Press to enter
5. CH- TV channel down / to select the item in the menu
CH+ TV channel up / to select the item in the menu
6. Power indicator
Illuminates red in standby mode, illuminates green when the display is
turned on
7.Remote Sensor
Selects the input signals:
Receives the signals from the remote control
1
6
7

Connection Options
The above figure is for reference only,
connections may differ depending upon
the models
DVD
STOP PLAY/PAUSE OPEN/CLOSE
PREW NEXT
DVD insert
VGA Input
Connect to theVGA
15PIN analog output
connector of aPC
display card to use set
as a PC display
DVD/DTV Input
Connect a component
video/audiodevice to
these jacks
Video Input
Connect video output
from an external
device to thisjack
AV/S-VIDEO/
COMPONENT Audio
Input
Connect audio output
from an externaldevice
to these jacks
PC Audio Input
Connect the audio
output from the pc
to the audio input port
Earphone port
Antenna Input
Connect cable or
antenna signals to
the TV, either direc-
tly or through your
cable box.
S-Video Input
Connect S-Video out
from an S-Video device
to the jacks.
ANT IN S-VIDEO VGA IN
PC AUDIO IN AUDIO IN
R L
VIDEO IN
V
Pb
Pr Y
COMPONENT IN
ANT IN S-VIDEO VGA IN
PC AUDIO IN AUDIO IN
R L
VIDEO IN
V
Pb
Pr Y
COMPONENT IN

Features
Model
NO. Functions
HLTDC19
1 TFT SAMSUNG
2 Screen size 19inch
3 Aspect ratio 4:3
4 Resolution 1280×1024
5 Brightness 300cd/m2
6 Contrast(Darkroom) 700:1
7 Response time(ms) 8
8 Color system NTSC
9 NO. of preset channels 181
10 Picture mode Yes
11 Angel of view H:150°/ V:135°
12 Color display 16,777,216
13 Color level16
14 OSD languages ENGLISH,FRENCH, SPANISH
15 AV stereo Yes
16 Surrounding sound No
17 Audio system M
18 Bass Yes
19 Balance Yes
20 Sound mode Yes
21 Mute Yes
22 BTSC Yes
23 AV input Yes
24 AV output No
25 Y CB CR Yes
26 Y PB PR Yes
27 S-video jack Yes
28 TV in Yes

Model
NO. Functions
HLTDC19
29
D-SUB jack Yes
30 DVI socket
No
31 SCART socket
No
32 Ear-Phone Out
Yes
33 CCD,V-CHIP
Yes
34 Semitransparent menu
Yes
35 ZOOM
No
36 16:9 mode
No
37 Child Lock
Yes
38 Quick View
Yes
39 NO. of built-in speakers
2
40 Audio output power(Built-in)(W)
2*1.5
41 Total power input（W）
80
42 Voltage range（V）
120
43 Power frequency（Hz）
60
44 Time of sleep timer(MINS)
240
45 Approval
UL
46 Suitable market
U.S.

Warnings and Cautions
Warning
High voltages are used in the operation of this product.
Do not romove the cabinet back from your set. Refer
servicing to qualified service personnel.
Warning
To prevent fire or electrical shock hazard, Do not expose
the main unit to rain or moisture.
Warning
Do not drop or push objects into the television cabinet
slots or openings. Never spill any kind of liquid on the
television receiver.
Caution
If the television is to be built into a
compartment or similarly enclosed, the
minimum distances must be maintained.
Heat build-up can reduce the service life of
your television, and can also be dangerous.
!
Minimum
10c
20c
10c 5cm

Caution
Never stand on, lean on, push suddenly the product or its
stand. You should pay special attention to children to children.
Caution
Do not place the main unit on an unstable cart stand, shelf or
table. Serious injury to an individual, and damage to the
television, may result if it should fall.
Caution
When the product is not used for an extended period of time, it
is advisable to disconnect the AC power cord from the AC
outlet.
Caution
Avoid exposing the main unit to direct sunlight and other
source of the heat. Do not stand the television receiver
directly on other produces which give off heat. E. g. video
cassette players,Audio amplifiers. Do not block the
ventilation holes in the back cover. Ventilation is essential to
prevent failure of electrical component. Do not squash power
supply cord under the main unit.
Caution
The LCD panel used in this product is made of glass.
Therefore, it can break when the product is dropped or
applied with impact. Be careful not to be injured by
broken glass pieces in case the LCD panel breaks.
!
!
!
!
!

REPLACEMENT OF MEMORY IC
1. MEMORY IC
This LCD TV uses memory IC. In the memory IC are memorized data for correctly operating the video and
sound circuits. When replacing memory IC, be sure to use IC written with the initial value of data.
2.CHECK MEMORY IC
(1) Power off
Unplug the ~120V power plug from ~120V power socket.
(2) Replace IC
Be sure to use memory IC written with the initial data values or blank memory IC.
(3) Power On
Plug the ~120V power plug into ~120V power socket. (If memory IC is blank, the program will take 25s to
initial memory IC.
(4) Check and set SYSTEM default value:
1) Press “DISPLAY” key, then press key “CCD”,"MTS/SAP”,"CCD”,"DISPLAY” on the Remote control
unit continuously for factory used.
2)The “Factory mode” will be displayed on the screen,
3) Check the setting value of the SYSTEM default value of Table below. If the vale is different, select
items by [CH-]&[CH+] keys and set value by [VOL-]&[VOL+] keys.
4) Press “EXIT” key and return to the normal screen.

Remote Control Key Functions
When using the remote control, aim it
towards the remotesensor on theTV
Stand By
DVD Open/close
Scan
TV/DVD
Mute
Call Screen Display
Program Number
TV Sleep button
Volume/Channel Selection
MENU
DVD 10+
DVD STOP
DVD SUBTITLE
DVD SETUP
DVD PAUSE/STEP
DVD FAST REVERSE
DVD FAST FORWARD
DVD MENU
DVD NEXT
DVD PREVIOUS
DVD REPEAT
DVD PLAY/ENTER
DVD A-B REPEAT
DVD Cursor Move button
DVD SLOW
DVD ANGLE
DVD SEARCH
DVD TITLE/PBC
DVD PROGRAM
DVD CALL
TV/AV and input selection
Return to Previous Channel
CCD ( closed caption) On / Off
Adjust Picture Mode
Exit On Screen Display
Mode
Zoom Function
Select MONO,STEREO, SAP in NTSC system
DVD AUDIO
Buttons on the remote control
UP
DOWN
LEFT RIGHT
POWER TV/DVD OPEN/CLOSE
SCAN RECALL DISPLAY MUTE
1234
5678
9900
CCD
P.STD
CH+
CH-
VOL
-
VOL
+
MENU
EXIT 10+
STOP SETUP PAUSE/STEP
REV FWD .PREV NEXT
D.MENU REPEAT A-B
PLAY/ENTER SLOW
ANGLE TITLE/PBC SEARCH
ZOOM D.CALL
PROGRAM
SUBTITLE
MTS/SAP
TV/AV
SLEEP
AUDIO

Remote Control
Installing Batteries
Remove the battery cover.
Insert two size AA batteries matching
the +/-polarities of the battery to the +/-
marks inside the battery compartment.
!
!
Precautions
Make sure that there is no
obstacle between theremote
controller and televisionset.
As strong light may interfere with the
signals, change yourposition to
operate the remote control if
the television cannot be turned
on or off as expected.
Keep the remote control
away from heat sources or
humid areas toensure
effective performance of
the remote.
Make sure that two AA 1.5V alkaline
batteries are loaded. The batteries
must be of the same type, must be
inserted properly, and must not be
rechargeable.

ICs Function Description
1.UOC3
Function：TV signal processor with Teletext and Nicam
PIN SYMBOL DESCRIPTION
1 VSSP2 ground
2 VSSC4 ground
3 VDDC4 Digital supply to SDACs(1.8V)
4 VDDA3(3.3V) Supply(3.3V)
5 VREF_POS_LSL Positive reference voltage SDAC(3.3V)
6 VREF_NEG_LSL+HPL Negative reference voltage SDAC(0V)
7 VREF_POS_LSR+HPR Positive reference voltage SDAC(3.3V)
8 VREF_NEG_HPL+HRP Negative reference voltage SDAC(0V)
9 VREF_POS_HPR Positive reference voltage SDAC(3.3V)
10 XTALIN Crystal oscillator input
11 XTALOUT Crystal oscillator output
12 VSSA1 ground
13 VGUARD/SWIO V-guard input/I/O switch (e.g.4mA current sinking
capability for direct drive of LEDs)
14 DECDIG Decoupling digital supply
15 VP1 1st supply voltage TV-processor(+5V)
16 PH2LF Phase-2 filter
17 PH1LF Phase-1 filter
18 GND1 Ground 1 for TV-processor
19 SECPLL SECAM OLL decoupling
20 DECBG Bandgap decoupling
21 EWD/AVL East-West drive output or AVL capacitor
22 VDRB Vertical drive B output
23 VDRA Vertical drive A output
24 VIFIN1 IF input 1
25 VIFIN2 IF input 2
26 VSC Vertical sawtooth capacitor
27 IREF Reference current input
28 GNDIF Ground connection for IF amplifier
29 SIFN1/DVBIN1 SIF input 1/ DVB input 1
30 SIFN2/DVBIN2 SIF input 2/ DVB input2
31 AGCOUT Tuner AGC output
32 EHTO EHT/over voltage protection input
33 AVL/SWO/SSIF/REFO/
REFIN
Automatic volume leveling/switch output/sound IF
input sub-carrier reference output/external reference
signal mixer for DVB operation

34 AUDIOIN5L Audio-5 input(left signal)
35 AUDIOIN5R Audio-5 input(right signal)
36 AUDOUTSL Audio output for SCART/CINCH(left signal)
37 ADUOUTSR Audio output for SCART/CINCH(right signal)
38 DECSDEM Decoupling sound demodulator
39 QSS0/AMOUT/AUDEE
M
QSS inter-carrier output/AM
output/deemphasis(front-end audio out)
40 GND2 Ground 2 for TV processor
41 PLLIF IF-PLL loop filter
42 SIFAGC/DVBAGC AGC sound IF/internal-external AGC for DVB
applications
43 DVBO/IFVO/FMRO Digital Video Broadcast output/IF video output/FM
radio output
44 DVBO/FMRO Digital Video Broadcast output/IF video output
45 VCC8V 8 Volt supply for audio switches
46 AGC2SIF AGC capacitor second sound IF
47 VP2 2th supply voltage TV processor(+5V)
48 IFVO/SVO/CVBSI IF video output/selected CVBS out/CVBS input
49 AUDIOIN4L Audio-4 input(left signal)
50 AUDIOIN4R Audio-4 input(right signal)
51 CVBS4/Y4 CVBS4/Y4 input
52 C4 Chroma-4 input
53 AUDIOIN2L/SSIF Audio 2 input (left signal)/sound IF input
54 AUDIOIN2R Audio 2 input (right signal)
55 CVBS2/Y2 CVBS2/Y2 input
56 AUDIOIN3L Audio 3 input(left signal)
57 AUDIOIN3R Audio 3 input(right signal)
58 CVBS3/Y3 CVBS 3/Y2 input
59 C2/C3 Chroma-2/3 input
60 AUDOUTLSL Audio output for audio power amplifier (left signal)
61 AUDOUTLSR Audio output for audio power amplifier (right signal)
62 AUDOUTHPL Audio output for headphone channel (left signal)
63 AUDOUTHPR Audio output for headphone channel (right signal)
64 CVBSO/PIP CVBS/PIP output
65 SVM Scan velocity modulation output
66 FBISO/CSY Flyback input/sandcastle output or composite H/V
timing output
67 HOUT Horizontal output
68 VSScomb Ground connection for comb filter
69 VDDcomb Supply voltage for comb filter(5V)
70 VIN(R/Prin2/Cx) V-input for YUV interface(2th 日input/Pr input or Cx
input)
71 UIN(B/PBIN2) U-input for YUV interface(2th B input/PB input)

72 YIN(G/YIN2/CVBS-Yx
)
Y-input for YUV interface(2th G input/Y input or
CVBS/Yx input)
73 YSYNC Y-input for sync separator
74 YOUT Y-output (for YUV interface)
75 UOUT(INSSW2) U-output for YUV interface(2nd RGB/YPbPr insertion
input)
76 VOUT(SWO1) V-output for YUV interface(general purpose switch
output)
77 INSSW3 3rd RGB/YPbPr insertion input
78 R/PRIN3 3rd R input/Pr input
79 G/YIN3 3rd G input/Y input
80 B/PbIN3 3rd B input/P5 input
81 GND3 Ground 3 for TV-processor
82 VP3 3rd supply for TV processor
83 BCLIN Beam current limiter input
84 BLKIN Black current input
85 RO Red output
86 GO Green output
87 BO Blue output
88 VDDA1 Analog supply for TCG u-Controller and digital supply
for TV-processor(+3.3V)
89 VREFAD_NEG Negative reference voltage (0V)
90 VREFAD_POS Positive reference voltage (3.3V)
91 VREFAD Reference voltage for audio ADCs(3.3/2V)
92 GNDA Ground
93 VDDA(1.8V) Analogue supply for audio ADCs(1.8v)
94 VDDA2(3.3V) Supply voltage SDAC(3.3V)
95 VSSadc Ground for video ADC and PLL
96 VDDadc(1.8V) Supply voltage video ADC and PLL
97 INTO/P0.5 External interrupt 0 or port 0.5(4mA current sinking
capability for direct drive of LEDs)
98 P1.0/INT1 Port 1.0 or external interrruput1
99 P1.1/T0 Port 1.1 or Counter/Timer 0 input
100 VDDC2 Digital supply to core(1.8V)
101 VSSC2 ground
102 P0.4/I2SWS Port 0.4 or I2S word select
103 P0.3/I2SCLK Port 0.3 or I2S clock
104 P0.2/I2SDO2 Port 0.2 or I2S digital output 2
105 P0.1/I2SDO1 Port 0.1 or I2S digital output 1
106 P0.0/I2SD1I/O Port 0.0 or I2S digital input 1 or I2S digital output
107 P1.3/T1 Port 1.3 or Counter/Timer 1 input
108 P1.6/SCL Poet 1.6 or I2C-bus clock line
109 P1.7/SDA Port 1.7 or I2C-bus data line

110 VDDP(3.3V) Supply to periphery and on-chip voltage
regulator(3.3V)
111 P2.0/TPWM Poet 2.0 or tuning PWM output
112 P2.1/PWM0 Port 2.1 or PWM0 output
113 P2.2/PWM1 Port 2.2 or PWM1 output
114 P2.3/PEM2 Port 2.3 or PWM2 output
115 P3.0/ADC0 Port 3.0 or ADC0 input
116 P3.1/ADC1 Port 3.1 or ADC1 input
117 VDDC1 Digital supply to core(+1.8)
118 DECV1V8 Decoupling 1.8V supply
119 P3.2/ADC2 Port 3.2 or ADC2 input
120 P3.3/ADC3 Port 3.3 or ADC3 input
121 VSSC/P Digital ground for u-Controller core and periphery
122 P2.4/PWM3 Port 2.4 or PWM3 output
123 P2.5/PWM4 Port 2.5 or PWM4 output
124 VDDC3 Digital supply to core(1.8v)
125 VSSC3 ground
126 P1.2/INT2 Port 1.2 or external interrupt 2
127 P1.4/RX Port 1.4 or UART bus
128 P1.5TX Port 1.5 or UART bus
2.RTD2023B
PIN SYMBOL DESCRIPTION
1 APLL_GND Ground for multi-phase PLL
2 APLL_VDD Power for multi-phase PLL
3 PLL_TEST1 Test Pin 1 Power-on-latch for MCU crystal location
4 PLL_TEST2 Test Pin 2 Power-on-latch for crystal in frequency
5 TMDS_TST TMDS_TEST Pin Power-on-latch for host interface type
6 REXT Impedance Match Reference.
7 TMDS_VDD TMDS power
8 RX2P Differential Data Input
9 RX2N Differential Data Input
10 TMDS_GND TMDS ground
11 RX1P Differential Data Input
12 RX1N Differential Data Input
13 TMDS_VDD TMDS power
14 RX0P Differential Data Input
15 RX0N Differential Data Input
16 TMDS_GND TMDS ground
17 RXCP Differential Data Input
18 RXCN Differential Data Input
19 AVS0 ADC vertical sync input 5V tolerance Power from PIN

13
20 AHS0 ADC horizontal sync input Adjustable Schmidt trigger
5V tolerance Power from PIN 13
21 ADC_VDD ADC Power
22 ADC_GND ADC Ground
23 B0+ 1st Positive BLUE analog input (Pb+)
24 B0 1st Negative BLUE analog input (Pb-)
25 SOG0 1st Sync on Green
26 G0+ 1st Positive GREEN analog input (Y+)
27 G0 1st Negative GREEN analog input (Y-)
28 R0+ 1st Positive RED analog input (Pr+)
29 R0 1st Negative RED analog input (Pr-)
30 V7 Video8 bit 7
31 V6 Video8 bit 6
32 V5 Video8 bit 5
33 V4 Video8 bit 4
34 V3 Video8 bit 3
35 V2 Video8 bit 2
36 V1 Video8 bit 1
37 ADC_GND ADC Ground
38 ADC_VDD ADC Power
39 V0 Video8 bit 0
40 VCLK Video8 Clock
41 NC --
42 NC --
43 NC --
44 NC --
45 NC --
46 Digital 1.8V Ground GNDK
47 Digital 1.8V Power VCCK
48 COUT Crystal out
49 PWM2 Pulse width modulation output port2
50 DDCSCL1(ADC) Open drain (Internal 75K pull high)
51 DDCSDA1(ADC) Open drain (Internal 75K pull high)
52 DCLK CLOCK
53 DENA DATA ENABLE
54 BGRN0 Display B-port Green Data 0
55 BGRN1 Display B-port Green Data 1
56 BRED0 Display B-port Red Data 0
57 BRED1 Display B-port Red Data 1
58 BJT_B Embedded regulator P type BJT control pin out
59 Pad 3.3V Power PVCC
60 Pad 3.3V Ground PGND

61 BBLU7 Display B-port Blue Data 7
62 BBLU6 Display B-port Blue Data 6
63 BBLU5 Display B-port Blue Data 5
64 BBLU4 Display B-port Blue Data 4
65 BBLU3 Display B-port Blue Data 3
66 BBLU2 Display B-port Blue Data 2
67 BBLU1 Display B-port Blue Data 1
68 BBLU0 Display B-port Blue Data 0
69 BGRN7 Display B-port Green Data 7
70 BGRN6 Display B-port Green Data 6
71 NC --
72 NC --
73 BGRN5 Display B-port Green Data 5
74 BGRN4 Display B-port Green Data 4
75 BGRN3 Display B-port Green Data 3
76 BGRN2 Display B-port Green Data 2
77 BRED7 Display B-port Red Data 7
78 BRED6 Display B-port Red Data 6
79 BRED5 Display B-port Red Data 5
80 BRED4 Display B-port Red Data 4
81 BRED3 Display B-port Red Data 3
82 BRED2 Display B-port Red Data 2
83 Pad 3.3V Power PVCC
84 Pad 3.3V Ground PGND
85 ABLU7 Display A-port Blue Data 7
86 ABLU6 Display A-port Blue Data 6
87 ABLU5 Display A-port Blue Data 5
88 ABLU4 Display A-port Blue Data 4
89 ABLU3 Display A-port Blue Data 3
90 ABLU2 Display A-port Blue Data 2
91 ABLU1 Display A-port Blue Data 1
92 ABLU0 Display A-port Blue Data 0
93 AGRN7 Display A-port Green Data 7
94 AGRN6 Display A-port Green Data 6
95 NC --
96 NC --
97 AGRN5 Display A-port Green Data 5
98 AGRN4 Display A-port Green Data 4
99 AGRN3 Display A-port Green Data 3
100 AGRN2 Display A-port Green Data 2
101 ARED7 Display A-port Red Data 7
102 ARED6 Display A-port Red Data 6
103 ARED5 Display A-port Red Data 5

104 ARED4 Display A-port Red Data 4
105 ARED3 Display A-port Red Data 3
106 ARED2 Display A-port Red Data 2
107 Pad 3.3V Ground PGND
108 Pad 3.3V Power PVCC
109 33VPNLOUT Panel on/off switch ot(Max current driving 1A)
110 COUT Crystal out
111 ARED1 Display A-port Red Data 1
112 ARED0 Display A-port Red Data 0
113 AGRN1 Display A-port Green Data 1
114 AGRN0 Display A-port Green Data 0
115 SDIO[3] Serial control I/F data in or Parallel port data [3] (Open
drain) MSB
116 Digital 1.8V Power VCCK
117 Digital 1.8V Ground GNDK
118 SCSB Serial control I/F chip select (Open drain)
119 SCLK Serial control I/F clock (Open drain)
120 DDCSDA2(DVI) Open drain (Internal 75K pull high)
121 DDCSCL2(DVI) Open drain (Internal 75K pull high)
122 PWM0 Pulse width modulation output port0
123 RESET_OUT Reset out
124 33VRST_REF Reference 3.3v for Reset Out
125 DPLL_VDD Power for digital PLL
126 DPLL_GND Ground for display digital PLL
127 XO Crystal OSC output
128 XI Reference clock input from external crystal or from
single-ended CMOS/TTL OSC
3.SM5964(PLCC)
Function: MCU
PIN SYMBOL DESCRIPTION
1 P4.2 Bit 2 of port 4
2 P1.0/T2 Bit 0 of port 1 & timer 2 clock out
3 P1.1/T2EX Bit 1 of port 1 & timer 2 control
4 P1.2 Bit 2 of port
5 P1.3/SPWM0 Bit 3 of port 1 & SPWM Channel 0
6 P1.4/SPWM1 Bit 4 of port 1 & SPWM Channel 1
7 P1.5/SPWM2 Bit 5 of port 1 & SPWM Channel 2
8 P1.6/SPEM3 Bit 6 of port 1 & SPWM Channel 3
9 P1.7/SPEM4 Bit 7 of port 1 & SPWM Channel 4
10 RES Reset
11 P3.0/RXD Bit 0 of port 3 & Receive data

12 P4.3 Bit 3 of port 4
13 P3.1/TXD Bit 1 of port 3 & Transmit data
14 P3.2/INT0 Bit 2 of port 3 & low true interrupt 0
15 P3.3/INT1 Bit 3 of port 3 & low true interrupt 1
16 P3.4/T0 Bit 4 of port 3 & Timer 0
17 P3.5/T1 Bit 5 of port 3 & Timer 1
18 P3.6/WR Bit 6 of port 3 & ext. memory write
19 P3.7/RD Bit 6 of port 3 & ext. memory read
20 XTAL2 Crystal out
21 XTAL1 Crystal in
22 VSS Sink voltage, ground
23 P4.0 Bit 0 of port 4
24 P2.0/A8 Bit 0 of port 2 & bit 8 of external memory address
25 P2.1/A9 Bit 1 of port 2 & bit 9 of external memory address
26 P2.2/A10 Bit 2 of port 2 & bit 10 of external memory address
27 P2.3/A11 Bit 3 of port 2 & bit 11 of external memory address
28 P2.4/A12 Bit 4 of port 2 & bit 12 of external memory address
29 P2.5/A13 Bit 5 of port 2 & bit 13 of external memory address
30 P2.6/A14 Bit 6 of port 2 & bit 14 of external memory address
31 P2.7/A15 Bit 7 of port 2 & bit 15 of external memory address
32 PSEN Program storage enable
33 ALE Address latch enable
34 P4.1 Bit 1 of port 4
35 EA External access
36 P0.7/AD7 Bit 7 of port 0 & data/address bit 7 of external
memory
37 P0.6/AD6 Bit 6 of port 0 & data/address bit 6 of external
memory
38 P0.5/AD5 Bit 5 of port 0 & data/address bit 5 of external
memory
39 P0.4/AD4 Bit 4 of port 0 & data/address bit 4 of external
memory
40 P0.3/AD3 Bit 3 of port 0 & data/address bit 3 of external
memory
41 P0.2/AD2 Bit 2 of port 0 & data/address bit 2 of external
memory
42 P0.1/AD1 Bit 1 of port 0 & data/address bit 1 of external
memory
43 P0.0/AD0 Bit 0 of port 0 & data/address bit 0 of external
memory
44 VDD Drive voltage

4.TPA1517NE
Function: Audio power amplifier
1 IN1 IN1 is the audio input for channel 1
2 SGND SGND is the input signal ground reference
3 SVRR SVRR is the midrail bypass mode enable
4 OUT1 OUT1 is the audio output for channel 1
5 PGND PGND is the power ground refernce
6 OUT2 OUT2 is the audio output for channel 2
7 VCC VCC is the supply voltage input.
8 M/SB M/SB is the mute/standby mode enable. When held at less
than 2V, this signal enables the TPA1517 for standby
operation. When held between 3.4V and 8.8V, this signal
enables the TPA1517 for mute operation. When held above
9.2V, the TPA1517 operates normally.
9 IN2 IN2 in the audio input for channel 2
10-20 GND/HS GND/HS are the ground and heat-sink connections. ALL
GND/HS terminals are the connected directly to the mount
pad for thermal-enhanced operation.