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ViewSonic Corporation
Confidential - Do Not Copy
VG2030wm-1
Crystal Frequency Output
RTD can output crystal frequency or 1/2 crystal frequency to external MCU to save a crystal device.
Once power state is on and reset is finished, we can set crystal frequency by firmware and output to pin
48 and pin 110 simultaneously, and then can turn off them in Pin Share Part. Pin 48 and PIN 110 is
configurable, detail setting is listed in Pin-Share part
RTD2120
8051 Embedded Micro-Controller for Monitor
Overview
This chip is the micro-processor of LCD monitor. It uses the design ware DW8051 of
Synopsys as the 8051 core of this chip and is compatible with other industry 8051 series. Also,
96Kbyte FLASH with 8 bit bus is embedded in this chip which is licensed from TSMC 0.18um
e-FLASH process. Here we use the package of PLCC44/LQFP48 if we would like to have a
discrete MCU controller or we make a multi-chip package with our LCD monitor controller to
form one chip package to save the cost of package and PCB material.
Features
Operating voltage range : 3.0V to 3.6V
8051 core, CPU operating frequency up to 50MHz
4 clocks per machine cycle
256-byte internal RAM
512-byte external data RAM, including 256-byte DDC RAM(128-byte x 2) and 256-byte
general purpose RAM
96K-byte flash memory, 64k for program and 32k for saving parameter
Two DDC ports compliant with VESA DDC1/2B/2Bi/CI
Three channels of PWM DAC with programable frequency from 100K to 100Hz
Watchdog timer with programmable interval
Three 16-bit counters/timers (T0, T1, and T2)
One PLL to provide programmable operating frequency and clock output, 2 clock output ports
One full-duplex serial port
Six interrupt sources with 2 external interrupts
Four channels of 6-bit ADC
Hardware In System Programming(ISP) capability, no boot code required
Built-in Low voltage reset circuit
Embedded 1.8V regulator
Code protection
Available in 44-pin PLCC or 48-pin LQFP package
AUDIO STEREO CLASS-D AUDIO POWER AMPLIFIER
DESCRIPTION
The TPA2008D2 is a third generation 5-V class-D amplifier from Texas Instruments. Improvements to
previous generation devices include: dc volume control, lower supply current, lower noise floor, higher
efficiency, smaller packaging, and fewer external components. Most notably, a new filter-free class-D
modulation technique allows the TPA2008D2 to directly drive the speakers, without needing a low-pass
output filter consisting of two inductors and three capacitors per channel. Eliminating this output filter
saves approximately 30% in system cost and 75% in PCB area.
The improvements and functionality make this device ideal for LCD projectors, LCD monitors,
powered speakers, and other applications that demand more battery life, reduced board space, and
functionality that surpasses currently available class-D devices.
A chip-level shutdown control limits total supply current to 1 µA, making the device ideal for bat-
tery-powered applications. Protection circuitry increases device reliability: thermal and short circuit.
Undervoltage shutdown saves battery power for more essential devices when battery voltage drops to
low leve.
Содержание VG2030wm-1
Страница 39: ...36 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1 6 Troubleshooting Flow Chart...
Страница 40: ...6 1 NO POWER 6 2 MCU NO FUNCTION 37 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 41: ...6 3 NO DISPLAY 38 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 42: ...39 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1 7 Block Diagram...
Страница 53: ...50 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1 9 Schematic Diagrams 9 1 MAIN PCB TOP VIEW...
Страница 54: ...9 2 MAIN PCB BOTTOM VIEW 51 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 55: ...9 3 CON PCB TOP VIEW 52 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 56: ...9 4 CON PCB BOTTOM VIEW 53 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 57: ...9 5 IR PCB TOP VIEW 54 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 58: ...9 6 IR PCB BOTTOM VIEW 55 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 59: ...9 7 POWER PCB TOP VIEW 56 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 60: ...9 8 POWER PCB BOTTOM VIEW 57 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Страница 61: ...58 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1 10 Exploded Diagram and Exploded Parts List...
Страница 62: ...59 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...