Convoy C7010 Podręcznik użytkownika - Strona 7
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SDRAM controller, USB OTG controller, DMA controller and smart power saving
mechanism to be a very powerful SOC platform. Some interfaces like video capture,
LCD controller, TV encoder with 1-channel DA, audio AD/DA with digital filters, I2S,
SPI are very suitable for audio / video applications.
Product Overview 6763 chip (Richwave)
RTC6763 is a 2.4GHz ISM band HDR (high data rate) FH (frequency hopping)
transceiver. The device is a single chip solution with integrated MAC, BBP and RF for
wireless application operating in 2.4GHz band. It provides three types of digital
modulation 16QAM/QPSK/BPSK, and on-air data rate support 12Mbps/6Mbps/3Mbps.
It provide 80 overlay channels, and each channel can be independently enable or disable
with hopping table. Just enabling one channel with hopping table setting RTC6763 can
operate at fixed frequency, or enabling several channels with hopping table setting
RTC6763 can operate as FH transceiver to reduce co-channel interference. Using smart
interference detection algorithm hopping table can be updated by SPI digital interface,
and this feature allows RTC6763 to avoid other interferences in 2.4 GHz band.
RTC6763 with TDD (Time Division Duplex) functionality creates a centralized network
with one master to coordinate up to four slaves. The system can operate in single mode (1
master with 1 salve) or multiple display mode (1 master with up to 4 slaves). Mode
switching can be performed on the fly. It is available in a 40-pin QFN 6mmX6mm
package and RoHS certificate.
Wireless TX board connections:
Video, audio, +/- to camera
o
3 wire to pairing button
o
+/- to IR board
o
The latest TX board updates:
a. Move the 12V to 5V DC to DC regulation to separate power board.
b. Change the TX board to 5VDC input.
c. Re-layout the board for more efficient thermal transfer from the chip to PCB
d. Re-layout the board for more efficient thermal conduction between the
PCBA and enclosure.
e. Change L10 from BEAD to 27R to solve the image drop problem
f.
Change R10 from 4.7K to 10K to improve startup stability
g. Add resistor to change the CPU to run at 120MHz clock. (20mA@5VDC
current reduction)
h. Add 3 more resistors to reserve performance tuning capability with system
clock adjustment.
i.
Change bootloader firmware to shut down unnecessary on-chip circuitry.
Convoy Technologies NPD Documentation
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