This manual is the latest at the time of printing, and does not
Include the modification which may be made after the printing,
By the constant improvement of product.
Safety Precaution
1/140
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product’s enclo
sure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE COVER
(OR BACK). NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL ONLY.
PRECAUTIONS DURING
SERVICING
1. In addition to safety, other parts and
assemblies are specified for conformance with
such regulations as those applying to spurious
radiation. These must also be replaced only
with specified replacements.
Examples: RF converters, tuner units, antenna
selection switches, RF cables, noise-blocking
capacitors, noise-blocking filters, etc.
2. Use specified internal Wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
3. Use specified insulating materials for hazardous
live parts. Note especially:
1) Insulating Tape
2) PVC tubing
3) Spacers (insulating barriers)
4) Insulating sheets for transistors
5) Plastic screws for fixing micro switches
4. When replacing AC primary side components
(transformers, power cords, noise blocking
capacitors, etc.), wrap ends of wires securely
about the terminals before soldering.
5. Make sure that wires do not contact heat
generating parts (heat sinks, oxide metal film
resistors, fusible resistors, etc.)
6. Check if replaced wires do not contact sharply
edged or pointed parts.
7. Make sure that foreign objects (screws, solder
droplets, etc.) do not remain inside the set.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
MAKE YOUR CONTRIBUTION
TO PROTECT THE
ENVIRONMENT
Used batteries with the ISO symbol
for recycling as well as small accumulators
(rechargeable batteries), mini-batteries (cells) and
starter batteries should not be thrown into the
garbage can.
Please leave them at an appropriate depot.
WARNING:
Before servicing this TV receiver, read the
SAFETY INSTRUCTION and PRODUCT
SAFETY NOTICE.
SAFETY INSTRUCTION
The service should not be attempted by anyone
unfamiliar with the necessary instructions on this
apparatus. The following are the necessary
instructions to be observed before servicing.
1. An isolation transformer should be connected in
the power line between the receiver and the
AC line when a service is performed on the
primary of the converter transformer of the set.
2. Comply with all caution and safety related
provided on the back of the cabinet, inside the
cabinet, on the chassis or picture tube.
3. To avoid a shock hazard, always discharge the
picture tube's anode to the chassis ground
before removing the anode cap.
4. Completely discharge the high potential voltage
of the picture tube before handling. The picture
tube is a vacuum and if broken, the glass will
explode.
5. When replacing a MAIN PCB in the cabinet,
2/140
always be certain that all protective are
installed properly such as control knobs,
adjustment covers or shields, barriers, isolation
resistor networks etc.
6. When servicing is required, observe the original
lead dressing. Extra precaution should be given
to assure correct lead dressing in the high
voltage area.
7. Keep wires away from high voltage or high
tempera ture components.
8. Before returning the set to the customer,
always perform an AC leakage current check
on the exposed metallic parts of the cabinet,
such as antennas, terminals, screwheads,metal
overlay, control shafts, etc., to be sure the set
is safe to operate without danger of electrical
shock. Plug the AC line cord directly to the
AC outlet (do not use a line isolation
transformer during this check). Use an AC
voltmeter having 5K ohms volt sensitivity or
more in the following manner.
Connect a 1.5K ohm 10 watt resistor paralleled
by a 0.15µF AC type capacitor, between a
good earth ground (water pipe, conductor etc.,)
and the exposed metallic parts, one at a time.
Measure the AC voltage across the combination
of the 1.5K ohm resistor and 0.15 uF
capacitor. Reverse the AC plug at the AC
outlet and repeat the AC voltage measurements
for each exposed metallic part.
The measured voltage must not exceed 0.3V
RMS.
This corresponds to 0.5mA AC. Any value
exceeding this limit constitutes a potential
shock hazard and must be corrected
immediately.
The resistance measurement should be done
between accessible exposed metal parts and
power cord plug prongs with the power switch
"ON". The resistance should be more than
6M ohms.
AC VOLTMETER
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this
apparatus have special safety-related
characteristics.
These characteristics are offer passed
unnoticed by visual spection and the protection
afforded by them cannot necessarily be obtained
by using replacement components rates for a
higher voltage, wattage, etc.
The replacement parts which have these
special safety characteristics are identified by
marks on the schematic diagram and on the parts
list.
Before replacing any of these components,
read the parts list in this manual carefully. The
use of substitute replacement parts which do not
have the same safety characteristics as specified
in the parts list may create shock, fire, or other
hazards.
9. Must be sure that the ground wire of the AC
inlet is connected with the ground of the
apparatus properly.
Good earth ground
such as the water
pipe, conductor,
etc.
AC Leakage Current Check
Place this probe
on each exposed
metallic part
Technical Specification
3/140
Product ModelLCT26Z4AD
TV SystemNTSC M, ATSC
VIDEO SystemNTSC
Screen Size26” diagonal
Active Area575.8mm(H) x 323.7mm(V)
Aspect Ratio16:9
External Size (with stand)715.43 mm (W) x 554.62 mm (H) x 115.07 mm (D)
Gross Weight (with stand)17.3 kg
Display Resolution
Pixel Pitch (Sub Pixel)0.1405 (H) x 0.4215(V) mm
Display Color16.2 millions of colors (R/G/B each 256 scales)
Gray Scale256 (R/G/B each 8-bit)
Brightness (Peak Value)500cd/m
Contrast (Dark Room)800:1
Sound EffectAcoustic Cinema Enhancement
Power SupplyAC 120V, 60 Hz
Power Consumption160W
Input Terminal
Output Terminal
1366 (H) x 768 (V) pixels (Each pixel has R/G/B 3 color
cells)
2
Antenna Input (F Type) x 1 (NTSC + ATSC/Clear QAM)
HDMI (Ver1.2) connector x2
VGA (D-Sub 15 Pin Type) x 1
Component Video - YPbPr x 1 RCA Terminals
Video Input RCA Terminals x 1
S-Video Input Mini Din 4 Pin Terminal x 1
Stereo, Audio x 4
1 set of Audio Output terminals (RCA, L&R)
SPDIF (Coaxial for all) x 1
SPDIF (Coaxial only for DVD) x 1
Note: The specifications shown above may be changed without notice for quality improvement.
Support the Signal Mode
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A. VGA Mode
Resolution
640 x 48031.5060.00
800 x 600
1024 x 76848.4060.00
B. YPbPr Mode
Resolution
480p(720x480)31.46859.94
720p(1280x720)45.0060.00
1080i(1920x1080)33.7560.00
C. HDMI Mode
Horizontal
Frequency
Vertical
Frequency
(KHz)
35.1656.25
37.9060.32
48.0872.19
Horizontal
Frequency
Vertical
Frequency
(KHz)
(Hz)
(Hz)
Resolution
Horizontal
Frequency
(KHz)
Vertical
Frequency
(Hz)
480p31.46859.94
720p45.0060.00
1080i33.7560.00
- When the signal received by the Display exceeds the allowed range, a warning
shall appear on the screen.
- You can confirm the input signal format from the on-screen.
message
Remote Control
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(Note: Details refer to AKAI TV Universal Remote Control Programming & Codes Guide.)
Standby( ): Press to turn on and off.
Mute( ): Press this button to quiet the sound.
Press again to reactivate the sound.
Press these buttons to select control of the TV, DVD, VCR or Set-top Box device.
P. Mode: Press to cycle through the picture modes: Cinema, Normal, Vivid, Hi-Bright and
User.
S. Mode: Press to cycle through
the sound
modes: Normal, News, Cinema, Concert and
User.
Sleep: Press repeatedly until it displays the time in minutes (10, 20, 30,
90, 120 and Off) that you want the TV to
remain
on before shutting off. To cancel sleep
time, press Sleep button repeatedly
40, 50, 60,
until sleep Off appears.
F1: Press to cycle through
the Stereo and
Multi-channel TV sound options: Mono,
Stereo and Bilingual.
CCD: Press to select the Closed Caption mode.
Display: Press to display the channel
information;this information disappears after
9 seconds.
V-Chip: Select the child protect mode you want.
0~9 Number Buttons: Press 0~9 to select a channel, and input the password Freeze: This button does not function on your TV LCT26Z4AD since it does not have “freeze” feature.
DTV/TV: Press to choose DTV/TV (high definition channels) directly.Guide (Digital TV Timetable): Press to display the (Digital TV Timetable) mode. Press again to exit.
DOT: Press number buttons with it to
select the channels directly in DTV.(i.e. channel 108-1
would need the dot button after the 8)
Recall: Press to return to previous channel. (Only for TV) Source: Press to select the signal source, such as TV, AV, S-Video, YPbPr, DVD, VGA, HDMI 1 or HDMI 2.
Enter: Press to enter or confirm. VOL +/-: Press to adjust the aduio levels.
CH +/- : Press to select the channel forward or backward.
∧, ∨, <, >: Press ∧, ∨, <, > to move the on-screen cursor.
Menu: Press to enter into the on-screen setup menu, press again to exit.
,: Press to skip the backward or forward.
,: Press to search the backward or forward.
: Press to play or pause the DVD disc.
: Press to stop playing the disc.
: Press to stop playing the disc.
DVD Menu: Press to return DVD disc menu.
Prog.: Press to display the program menu. Press it again to exit.
Title: Press to display to DVD disc title.
Repeat: When in DVD mode, press to cycle
through the options: CHAPTER, TITLE, ALL
and nothing.While in CD mode, the options
are: TRACK, ALL.
Subtitle: Press to select desired DVD subtitle.Setup: Press to display a setup page. Press
it again to exit menu.
Audio: Press to select desired audio track.
DVD Info: Press to display DVD information.
Angle/Exit: Press this button to select desired viewing angle of the Video (disc feature).
Favorite: Press to select the favorite channel from list.
Add/Erase: Press to add or delete favorite channels.
Pic Size: Press to change the screen size, such as Full, 4:3.(Note: When in VGA mode, it can
only select “Full”.)
Zoom: This button is not in use.
Red: This is a special control function for the
Digital tuner.
Green: This is a special control function for the
Digital tuner.
Yellow: This is a special control function for the Digital tuner.
Blue: This is a special control function for the
Digital tuner.
POWER +3.3V
POWER +5V
POWER +3.3V
POWER +1.6V
POWER +3.3V
POWER +3.3V
POWER +1.8V
POWER +1.5V
POWER +1.2V
POWER +1.2V
GROUND
GROUND
GROUND
GROUND
GROUND
A
POWER SUPPLY
POWER SUPPLY
POWER SUPPLY
POWER SUPPLY
STANDBY POWER
TUNER POWER
MT5112 POWER AND ITS PERIPHERAL
MT5112 POWER
MT5372 POWER AND ITS PERIPHERAL
MT5372 ANALOG POWER
MT5372 DDR POWER
MT5372 VIDEO FRONT-END POWER
MT5372 POWER
MT5372 ANALOG POWER
DIGITAL GROUND
ANALOG GROUND
ANALOG GROUND
ANALOG GROUND
ANALOG GROUND
1.After turning on power switch, PSU board sends 5Vst-by Volt to Main
IC MT5371waiting for ON signals from Key Switch or Remote Receiver.
2. When the ON signal from Key Switch or Remote Receiver is detected, MT5371 will send
ON Control signals to Power. Then Sub PSU sends 5Vsc, 9Vsc, 24V to PCBs working.
3. If some abnormal signals are detected (for example: over volts, over current, over
temperature and under volts), the system will be shut down by Power off.
The CE2836 is a mixed signal CMOS monolithic audio
Codec. It contains six multi-bit sigma delta DAC and a
stereo ADC with 5 input multiplexer, Ideal for audio
playback and recording applications.
The DAC consists of 128-time interpolation filters, 3
order multi-bit Σ∆ modulators, switch capacitors and
analog reconstruction filters. The Σ∆ converter offers
superior differential linearity, with minimum distortion due
to component mis-match. high tolerance to clock jitter.
Additionally it includes separated digital volume control
for each channel.
The ADC utilizes cascaded Σ∆ architecture. The internal
digital filter has a 20K bandwidth. It support sampling
frequency up to 96K Hz. The ADC also includes a analog
Automatic Level Control and Noise Gate function to ease
the recording applications.
ADFS ADXCK
DOUT
ADBCK
SDA
FEATURES
• Six Channel Audio DAC.
- 104 dB SNR (A
Weighted).
- -82 dB THD + N Ratio (A Weighted).
- 32K - 192 KHz. Sampling Rates.
- On -chip Reconstruction Filters.
rd
- Independent Digital Volume Control.
• Stereo Audio ADC.
- 5 Channel ADC inputs.
- Up to 96K Sampling Rate.
- With Automatic Level Control and Noise Gate.
- Includes ALC and Noise Gate Functions.
2
• I
S, Left and Right Justified Digital I/F Formats.
• 2-wire Serial Control Interface.
• 3.3 Volt Power Supply.
Applications
• Digital Surround Sound For Home Theatre
• DVD or DVD Recordable.
SCL
DIN1 DABCK DIN3 DIN2 DAFS DAXCK
ADC CK
CE2836
777
1
R
N
I
A
ADC SIF
OFP
S
L
R
O
777
5
R
N
I
A
E
R
T
T
S
I
N
G
O
E
C
R
C
A
D
7
5
L
N
I
A
777
3
L
O
A
C
D
A
ALC
7
1
L
N
I
A
7
7
7
2
R
N
I
A
7
7
7
3
2
L
R
N
N
I
I
A
A
7
7
7
3
L
N
I
A
7
7
7
4
4
L
R
N
N
I
I
A
A
DAC SIFC I F
DAC 6 CHANNEL
GAIN CONTROL
INTERPOLATION
FILTER
C
A
D
7
3
R
O
A
777
2
L
O
A
DAC CK
C
A
D
7
2
R
O
A
777
1
L
O
A
7
1
R
O
A
CE2836 Performance
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CE2836
Item
1Audio Output Level1 Vrms
2Audio Bandwidth 20Hz - 20 KHz+/- 0.1 dB
3SNR (A-weight)>104 dB
4THD + NOISE (A-weight, 0 dB input)< -82 dB
5Dynamic Range94 dB
6Channel Separation< -92 dB
7Nonlinear Distortion< 0.25 dB
8Channel Gain Error< 0.1 dB
DAC PERFORMANCE SPECIFICATIONS
ADC PERFORMANCE SPECIFICATIONS
1Maximum Input Level4 Vpp
20 dB Audio Input Level1 Vrms
3Audio Bandwidth 20Hz - 20 KHz+/- 0.5 dB
4SNR (A-weight)>98 dB
5THD + NOISE (A-weight, 0 dB input)< -88 dB
Spec.
6Dynamic Range94 dB
7Channel Separation< -96 dB
8Nonlinear Distortion< 0.25 dB
9Channel Gain Error< 0.5 dB
All Measurement were taken with only one channel active.
CE2836
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Description (continue)
The DAC support conversion rate from 32K to 192KHz while the ADC from 32K to 96K. The CE2836 support 32, 24, 20 and
16-bit input data. It also support multiple sampling frequency data. Each DAC has its own individual volume control.
XCK REQUIREMENT
The CE2836 supports 32K, 44.1K, 48K, 96K and 192K sampled audio in DAC operations and32K, 44.1K, 48K and 96K
sampled audio in ADC operations. The oversampled clock, XCK, requirements are listed in Table 1 and 2.
The DAC and ADC PCM serial port can be configured as ‘Master’ or ‘Slave’ independently and each has separated over
sampling clock input. In the ‘Slave Mode’ PCM serial port operation if the AUTODEC, CR1[7]==1,there is an clock
frequency detection circuit to set up the system clock, the users don’t need to set the SRC registers. However in the ‘mastermode’ operation the users need to set the SCR registers for the serial audio clock generations
Table 1.
Sampling
Rate
XCK Freq12.288 MHz8.192 Mhz.24.576 Mhz16.384 Mhz
32 K
44.1K
48 K
96 K
192 K
All the XCK clock rate listed are supported in the ‘Slave Mode’
SRC Registers are used in the ‘Master Mode’. (#) are not supported in the in the ‘Master Mode’ .
DAC AUTODET is CREG1[7], DAC SRC[1:0]are CREG1[6:5] and DACDIV is CREG1[4].
All the XCK clock rate listed are supported in the ‘Slave Mode’ .
SRC Registers are used in the ‘Master Mode’. (#) are not supported in the ‘Master Mode’ .
ADC AUTODETis CREG9[7], DAC SRC[1:0]are CREG9[6:5] and DACDIV is CREG9[4].
Input pin (default) if DAC I/F is configured to be ‘slave’ else it is an Output.
DAFS48IDAC left/right channel clock pin. Please refer to Figure 1 PCM data format for its
definition
Input (default) if DAC I/F is configured to be ‘slave’ else it is an output
DIN11IDAC Channel 1 or TDM serial audio data input.
DIN22IDAC Channel 2 serial audio data input.
CE2836
67/140
PIN DESCRIPTION (Continued)
Pin NamePin # TypeDescription
DIN33IDAC Channel 3 serial audio data input.
DOUT4OSerial ADC output
VDD5+3.3VDigital power supply, 3.3 Volt.
GND6GNDDigital ground
ADFS7I/OADC left/right channel clock pin. Please refer to Figure 1 PCM data format for its
definition.
Input (default) if ADC I/F is configured to be ‘slave’ else it is an output
ADBCK8I/OExternal master clock input for ADC.
Input (default) if ADC I/F is configured to be ‘slave’ else it is an output
ADXCK9IADC audio serial data clock input.
GND10IDigital ground
Analog
N/C11No connection. It can be tied to AGND.
AINR512I ADC channel 5 right input. Input resistance is 20K Ohm
AINL513I ADC channel 5 left input. Input resistance is 20K Ohm
N/C14No connection. It can be tied to AGND.
AINR415I ADC channel 4 right input. Input resistance is 20K Ohm
AINL416I ADC channel 4 left input. Input resistance is 20K Ohm
AINR317I ADC channel 3 right input. Input resistance is 20K Ohm
AINL318I ADC channel 3 left input. Input resistance is 20K Ohm
AINR219I ADC channel 2 right input. Input resistance is 20K Ohm
AINL220I ADC channel 2 left input. Input resistance is 20K Ohm
AINR121I ADC channel 1 right input. Input resistance is 20K Ohm
AINL122I ADC channel 1 left input. Input resistance is 20K Ohm
AVDD23+3.3VADC power supply.
N/C24No connection. It can be tied to AGND.
AGND25GNDAnalog ground pin.
ADVRF26OADC reference voltage. It should be decoupled to AGND with a 22 uF capacitor in
parallel with a 0.1 uF. Its value should be AVDD/2 volt.
AGND27GNDAnalog ground pin.
CE2836
68/140
PIN DESCRIPTION (Continued)
Pin NamePin # TypeDescription
ADVCM28OADC comment mode voltage. It should be decoupled to AGND with a 22 uF in parallel
with a 0.1 uF. Signal level is AVDD/2.
AGND29GNDAnalog ground pin.
AVDD30+3.3VDAC power supply.
AOL331OAnalog left channel 3 output
AOR332OAnalog right channel 3 output
AOL233OAnalog left channel 2 output
AOR334OAnalog right channel 2 output
AOL135OAnalog left channel 1 output
AOR136OAnalog right channel 1 output
DAVCM37ODAC comment mode voltage. It should be connected to a 22 uF in parallel with a 0.1 uF
decoupling capacitors to ground. Signal level is AVDD/2.
DAVL38, 39GNDDAC negative reference voltage. It should be tied to AGND.
DAVH40,41IDAC positive reference voltage. It should be connected to AVDD via a 180 ohm serial
resistor, and a 22 uF in parallel with a 0.1 uF decoupling capacitors to ground.
N/C42No connection. It can be tied to AGND.
CE2836
69/140
DIGITAL AUDIO SERIAL INTERFACE
There are two independent PCM serial ports, one for DAC and one for ADC. The DAC digital serial interface consists of 3
serial input pins, DIN1, DIN2, DIN3, one serial clock input/output pin, DABCK, and one left/right indicator input/output pin,
DAFS. The ADC consists of a data output pin, DOUT and one serial clock input/output pin, ADBCK, and one left/right
indicator input/output pin, ADFS. The BCK and FS are output pins when the respective port is configured as ‘Master’, and
input pin when it is configured as ‘Slave’ port. The Master/Slave operations are setup via CREGA[7] and CREGA[3]. The
data are 2’s complement MSB first numbers. The CE2836 supports four resolution, which are selected programming the
control register CREG0 and CRFEGA via the I
Table (3): Audio Serial Data Input Resolution,
The DIN and DOUT can be either 24-bit or 32-bit per frame as well as left justified, right justified or I2S. .
2
C serial control port. Table 3 describes these four resolution.
FormatNBIT[1:0]DIN, DOUT
00016-bit
10120-bit
21024-bit (default)
31132-bit
Table (4): Audio Serial Data Input Modes
ModeFMT[1:0]DIN, DOUT
000Right Justified
101Left Justified
210I2S (default)
311TDM
TDM Input Format
The CE2836 support Time Division Multiplex data input. In this format only one data input pin is required. The six channel
data are sent in serial order, channel 1 first, followed by channel 2 and so forth. The number of bits per channel is defined by
CREG0[5:4].
FS
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BCK
CE2836
Figure 1. Audio Serial Input Data Format
1/fs
left Channelright channel
DIN,DOUT
FS
BCK
DIN,DOUT
FS
BCK
DIN,DOUT
LSBMSB
012
nn
LSBMSB
012
Right Justified Input Format
left Channelright channel
LSBMSB
nn
123
LSBMSB
123
Left Justified Input Format
left Channelright channel
LSBMSB
123
nn
LSBMSB
123
FS
BCK
DIN,DOUT
2
I S Input Format
LSBMSB
12
LSBMSB
123
nnn
LSBMSB
Channel 0Channel 1Last Channel
TDM Input Format
12
data = 03
CE2836
71/140
DAC INFINITE ZERO DETECTION
The CE2836 DAC has an Infinite Zero Detection circuit which detects zero in the Audio Serial Port that lasts for
approximately 0.2 sec. By default, the zero detection circuit is on.
DAC Digital Attenuation
Each DAC contains an Digital Attenuation block. The attenuation values are hold in the Volume Control Registers. The Value
80H corresponds to Full Scale, 0dB. and each decrement correspond to -0.5 dB additional attenuation.
ADC Gain and ALC
Each channel of ADC input includes a Analog Gain. The Gain is controlled by CREGC, ADC Gain Selection, The gain range
is from +6 dB to -9 dB. with 1 dB step. The GAIN = 9 corresponds to 0dB gain. The AUTOMATIC LEVEL CONTROL set
the ADC maximum digital output to a prescribed value by automatic manipulating the analog gain. The ALC is controlled by
CREG8, ADC PROC. REGISTER..
Table (5): ALC Target Level
ALC[2:0]Maximum Digital Output
000-1 dB FS
001-2 dB FS
010-3 dB FS
011-4 dB FS
100-5 dB FS
101-6 dB FS
110-7 dB FS
111-8 dB FS
Table (6): ALC Hold Time
ALCHTMHold TimeComment
0340 msec.For music program
15.3 msecFor speech program
CE2836
72/140
ADC Noise Gate
Noise Gate remove hissing noise during silence period. It is useful for recording noisy program. While Noise Gate is enabled
the ADC digital output will be zeroed if the signal level below a predetermined value for about 0.5 seconds. The noise Gate is
controlled by the same ADC PROC. REGISTER.
Table (7): Noise Gate Threshold
NGTH[1:0]Threshold
00-66 dB
01-72 dB
10-78 dB
11-84 dB
Serial Command Port
The user can select the chip operation mode by programming the internal control registers through serial I2C port. The Chip
Address for the CE2836 is 35H. The protocol for write operation consists of sending 3 byte data to CE2836, following each
byte is the acknowledges generated by CE2836. The first byte is the 7-bit Chip Address followed by the read/write bit (read is
high, write is low). The second byte is the control register address. The third byte is the control register data.
Upon power up, all programmable registers are set to default values. Figure 2 describes the serial command port timing
relationship.
Figure 2. Serial Command Port Timing
I2C Bus Control Register Write Example:
first bytesecond bytethird byte
SDA
SCL
StartStopCA6
111
Example
Set channel 1L volume to 30H:
1
first byte: [CA R/W] = 6AH
second byte: register address: A<7:0> = 02H
third byte: data D<7:0> = 30H
CA0
R/W
ACK
A7A0
( Note: Chip adrress: CA<6:0> = 35H, R/W =0.)
ACK
D7
ACK
D0
CE2836
73/140
SERIAL PORT CONTROL REGISTER ASSIGNMENT
There are 8 registers dedicated to the CE2836 for chip functional programming, The register addresses assignments are
Address
(decimal)
0 CREG0[7:0]A0DAC Control REG0: Data input format, de-emphasis filter
1CREG1[7:0]80DAC Control REG1: Input format and PLL output fre-
2CREG2[7:0]80Volume Control Register for DAC channel 1, left
3CREG3[7:0]80Volume Control Register for DAC channel 1, right
4CREG4[7:0]80Volume Control Registerl for DAC channel 2, left
5CREG5[7:0]80Volume Control Register for DAC channel 2, right
6CREG6[7:0]80Volume Control Register for DAC channel 3, left
7CREG7[7:0]80Volume Control Registerl for DAC channel 3, right
8CREG8[7:0]82ADC Proc REG: ALC and Noise Gate Control Registers
9CREG9[7:0]A0ADC Control Register.
10CREGA[7:0]00CHIP Control Register.
11CREGB[7:0]01ADC MUX Select.
Register
Default
Value
Register Function
selection
quency selection
12CREGC[7:0]99ADC Input Gain Select
13CREGD[7:0]92Chip Soft Reset.
CONTROL REGISTERS DESCRIPTION
74/140
CREG0, DAC Control Register 0 (ADRS=hex00, default=hexA0)
CREG0[7:0]
ADDR[3:0]
BIT 7 BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0
Hex 00FMT[1:0]NBIT[1:0]AMUTEDEEMPFSMPL[1:0]
Default Value 1 0 1 0 0 0 0 0
FMT[1:0] Digital Serial Bus Format Select
00: - Normal or Right Justified Format.
01: -Left Justified Format.
10: - I2S Format.(default)
11: - TDM, Multi-channel Time Division Multiplex Format
NBIT[1:0]: - These two bits define the serial audio input resolution for right justified and TDM mode
0: - Auto-mute enabled. (default)
1: - No auto-mute.
DEEMP: - Enable de-emphasis
0: - Normal. (default)
1: - enable de-emphasis.
FSMPL: - Interpolation filter selection.
These two bits are recognized only when “AUTODET” bit of the CREG1 is set to ‘0’.
0X: - 44.1 or 48K sampling.(default)
10: - 96K sampling.
11: - 192K sampling.
CREG1, DAC Control Register 1(ADRS=hex01, default=hex80)
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CREG1[7:0]
ADDR[3:0]
BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0
CE2836
Hex 01
Default Value 1 0 0 0 0 0 0 0
AUTODET
SRC[1:0]CKDIV2XMUTE56MUTE34MUTE12
AUTODET Automatically detects the serial audio input data sampling rate clock frequency.
0: - do not use auto-detect
1: - automatically detects the serial audio input data sampling rate and clock frequency.
SRC[1:0]: - DAC Sampling Rate Selection. It is used in the DAC Master Mode, CRA[7]==1, to generate DAFS and
CREGC, ADC Input Gain Selection (ADRS=hex0C, default=hex99)
CREG1[7:0]
ADDR[3:0]
BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0
CE2836
Hex 0CLGAIN[3:0]RGAIN[3:0]
Default Value 1 0 0 1 1 0 0 1
LGAIN[3:0] is for ADC Left Channel Gain Select While RGAIN[3:0] is for Right Channel Gain Select
1111 corresponds to +6 dB and 0000 to -9 dB with -1dB step
Chip Soft Reset; A write of all zeros to this register will reset the chip except the Command Registers.
Another write of hex92 is required to enable to chip again.
APPLICATION CONNECTION EXAMPLE:
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Analog
3.3 Volt
100 uF
CE2836
180 Ohm
Digital
3.3 Volt
+3.3 Volt
680 ohm
2
I C Serial
Interface
Over Sample Clock
Digital Audio
Interface
Over Sample Clock
All Unmarked
Capacitors have
values of 0.1 uF
22 uF
44
45
46
47
48
AVDD
23
DAVH
30
5
DVDD
6
DGND
CE2836
SCL
SDA
DAXCK
DABCK
DAFS
1
DIN1
2
DIN2
3
DIN3
4
DOUT
7
ADFS
8
ADBCK
9
ADXCK
14
24
N/C
42
25
27
AGND
4041
DAVL
AOR1
AOL1
AOR2
AOL2
AOR3
AOL3
AINL1
AINR1
AINL2
AINR2
AINL3
AINR3
AINL4
AINR4
AINL5
AINR5
39
38
36
35
34
33
32
31
22
21
20
19
18
17
16
15
13
12
220 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
10 uF
29
22 uF
DAVCM
ADVRF
37
22 uF
26
ADVCM
28
22 uF
CE2836
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SUGGESTED ANALOG RECONSTRUCTION FILTER
A second Sallen Key low pass reconstruction filter is recommend to remove the high frequency sigma delta modulator noise.
The filter’s component values and characteristic are shown in the following figures.
Sallen Key 2nd order LP filter
1000 pF
4.7 uF
100 K
5
0
-5
-10
-15
Amplitude (dB)
-20
2.7 K
10 K
680 pF
LPF Frequency Res ponse
+
-
10 K
10 K
All resistors and capicitors are
5% precision.
-25
-30
10
3
10
4
Freq (Hz.)
10
5
CE2836
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ADC
The ADC converters have a input buffer. The buffers have a equivalent input resistance of 20K ohm. To ensure the
performance it is recommended that the applications should have a simple low pass filter to remove the high frequency noise.
Recommended ADC
input circuits
20 K
5.1 K
100 pf
1 uf
5.1 K
20 K
VCM
ADC
Internal Buffer
TIMING DIAGRAM
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BCK
DIN,
DOUT
FS
Figure 3. Audio Serial Interface Timing Requirement
tbck
tbck
L
tkd
su
tkr
su
tkr
tbck
hd
H
CE2836
tkd
hd
SDA
SCL
Figure 4. Serial Command Port Write Timing Requirement
tSCL
tLOW
SDA, SCL
tFtR
tBFtHD,sta
stopstartstopstart
tHD,dattSU,dattSU,statSU,stp
tHIGH
CE2836
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ABSOLUTE MAXIMUM RATINGS
SymbolCharacteristicsMinMaxUnits
V
DD
V
i
A
i
V
o
A
o
TDsc
TA
SC
T
a
T
j
TsolLead Soldering Temperature (10 sec., 1/4” from pin)280
TvsolVapor Phase Soldering (1 minute)220
TstorStorage Temperature-65+150
Power Supply Voltage (Measured to GND)-0.5+7.0V
3,4
2
3,4
GND-0.5V
-100100mA
2
GND-0.5VDD+0.5V
-100100mA
1Sec
Digital Input Applied Voltage
Digital Input Forced Current
Digital Output Applied Voltage
Digital Output Forced Current
Digital Short Circuit Duration (single output high state to Vss)
Analog Short Circuit Duration (single output to VSS1)infiniteSec
Ambient Operating Temperature Range -25+125
Junction Temperature (Plastic Package)-65+150
o
C
o
C
o
C
o
C
o
C
Notes:
1. Absolute maximum ratings are limiting values applied individually, while all other parameters are within specified
operating conditions.
2. Applied voltage must be current limited to specified range, and measured with respect to VSS.
3. Forcing voltage must be limited to specified range.
4. Current is specified as conventional current, flowing into the device.
CE2836
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ELECTRICAL CHARACTERISTICS
ParameterCharacteristicsMinTypMaxUnits
Power Supply
AVDDAnalog power supply voltage2.83.34.0V
DVDDDigital power supply voltage2.83.34.0V
I
I
DA
DD
Analog Current60mA
Digital Current2018mA
Audio DAC Characteristics
Full Scale Output Voltage to a 10K load.9811.02Vrms
V
VCM
Reference voltageVDD/2V
Digital Characteristics
V
IH
Digital Input Voltage, Logic HIGH,
TTL Compatible Inputs.
I
OZH
I
OZL
C
C
I
O
Hi-Z Leakage Current, HIGH,
=Max, VIN=3.3 Volt
V
DD
Hi-Z Leakage Current, LOW,
=Max, VIN=V
V
DD
Digital Input Capacitance (TA=25oC, f=1Mhz)8pF
Digital Output Capacitance (TA=25oC, f=1Mhz)10pF
SS)
2.0V
DD
33A
-10A
V
µ
µ
Audio Serial Interface Timing
tbck
tbck
tbck
tkd
H
L
su
BCK Cycle Time80ns
BCK Pulse Width, HIGH30ns
BCK Pulse Width, LOW30ns
Audio Data Setup Time With Respect To Rising
Edge of BCK
tkd
hd
Audio Data Hold Time With Respect to Rising
Edge of BCK
tkr
su
Audio FS Setup Time With Respect To Rising
Edge of BCK
10ns
15ns
10ns
CE2836
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ParameterCharacteristicsMinTypMaxUnits
tkr
hd
Serial Command Port
Audio FS Hold Time With Respect To Rising
Edge of BCK
15ns
fSCLSCL Clock Frequency100kHz
tSU,staStart condition set up time4.7us
tHD,staStart condition hold time4.0us
tSU,stpStop condition set up time4.0us
tLOWSCL Low time4.7us
tHIGHSCL High time4.0us
tRSCL & SDA rise time1.0us
tFSCL & SDA fall time0.3us
tSU,DATData set-up time250ns
tHD,DATData hold time0ns
tBFBus Free time4.7us
PACKAGING INFORMATION (LQFP 48 PIN)
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CE2836
Dimensions
SYMBOLS
mm.
SYMBOLS
mm.
minnormmaxminnormmax
A
A1
0.050.15
1.68
A21.351.41.45
b0.170.220.27
C0.090.20
D
D1
48
1
e
b
37
2939
28
9.0 BSC
7.0 BSC
LQFP 48 (7 X 7 mm)
36
E
E1
e
L
L1
9.0 BSC
7.0 BSC
0.450.650.75
0.630.61.03
1.00 REF
12
7
13
E1
D1D
24
18
17
E
c
L
L1
A2
A1
A
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Issued Date: Nov. 17, 2006
96/140
Model No.: V260B1 - L01
TFT LCD Approval Specification
MODEL NO.: V260B1 - L01
Approval
Issued Date: Nov. 17, 2006
97/140
Model No.: V260B1 - L01
1. GENERAL DESCRIPTION
1.1 OVERVIEW
V260B1- L01 is a TFT Liquid Crystal Display module with 12-CCFL Backlight unit and 1ch-LVDS
interface. The displ ay diagonal is 26”. This module supports 1366 x 768 W XGA format and can display
16.2M colors(6-bits+FRC colors). The inverter module for backlight is built-in.
Approval
1.2 FEATURES
- Excellent brightness 500n its
- Contrast ratio 800:1
- Fast response time (8ms)
- Color saturation NTSC 72%
- WXGA (1366 x 768 pixels) resolution
- DE (Data Enable) only mode
- LVDS (Lo w Voltage Differential Signaling) int erface
Item Specification Unit Note
Active Area 575.769 (H) x 323.712 (V) (26” diagonal) mm
Bezel Opening Area 580.8 (H) x 328.8 (V) mm
Driver Element a-si TFT active matrix -
Pixel Number 1366 x R.G.B. x 768 pixel
Pixel Pitch (Sub Pixel) 0.1405 (H) x 0.4215 (V) mm
Pixel Arrangement RGB vertical stripe -
Display Colors 16.2M color
Display Operation Mode Transmissive mode / Normally White -
Surface Treatment
Anti-Glare coating (Haze 25%)
Hard coating (3H)
-
(1)
1.5 MECHA N ICAL SPECIFICATIONS
Item Min. Typ. Max. Unit Note
Horizontal(H) 625 626 627 mm
Module Size
Note (1) Please refer to the attached drawings for more information of front and back outline dimensions.
Vertical(V) 372 373 374 mm
Depth(D) 35.6 36.6 37.6 mm To PCB cover
Depth(D) 41.2 42.2 43.2 mm To inverter cover
Weight -- 4500 -- g
Version 2.1
Issued Date: Nov. 17, 2006
98/140
Model No.: V260B1 - L01
Approval
2. ABSOLUTE MAXIMUM RATINGS
2.1 ABSOLUTE RATINGS OF ENVIRONMENT
Item Symbol
Storage Temperature TST -20 +60 ºC (1)
Operating Ambient T emperature TOP 0 +50 ºC (1), (2)
Shock (Non-Operating) S
Vibration (Non-Operating) V
Note (1) Temperature and relative humidity range is shown in the figure below.
(a) 90 %RH Max. (Ta ≦ 40 ºC).
(b) Wet-bulb temperature should be 39 ºC Max. (Ta > 40 ºC). (c) No condensation.
Note (2) The maximum operating temperature is based on the test condition that the surface temperature of
display area is less than or equal to 60 ºC with LCD module alone in a temperature controlled chamber.
Thermal management should be considered in final product design to prevent the surface temperature of
- 50 G (3), (5)
NOP
- 1.0 G (4), (5)
NOP
Min. Max.
Value
Unit Note
display area from being over 60 ºC. The range of operating temperature may degrade in case of improper
thermal management in final product design.
Note (3) 11 ms, half sine wave, 1 time for ± X, ± Y, ± Z.
Note (4) 10 ~ 500 Hz, 10 min, 1 time each X, Y, Z.
Note (5) At testing Vibra tion a nd Shoc k, the f ixture in hold ing the m odule has to be har d and rigi d enough
so that the module would not be twisted or bent by the fixture.
Relative Humidity (%RH)
100
90
80
60
Operating Range
40
20
10
Storage Range
-40 40-20 0 2060 80
Temperature (ºC)
Version 2.1
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