ADV8003 Hardware Manual
Rev. B, August 2013
219
OSD_CORE
Config
Register
DDR2 Memory
I2C
Slave
FLASH
MEM
System
Controller(CPU)
SPI
Master
Slave
SPI
Figure 78: MCU as SPI Master Sending OSD Data Through ADV8003 SPI Slave Interface
Additionally, the system MCU (SPI master) can program the external flash by looping SPI commands through the SPI slave (serial port 1)
and the SPI master (serial port 2) interfaces connected in a chain. In this mode, the OSD core just passes through MOSI, SS and SCLK
signals from the MCU to the flash. Note that the system MCU is responsible for any error protection in this mode, as shown in
This option can be useful during the final debug stage of the OSD, in which the OSD design could be downloaded into the system SPI
flash memory through, for example, the USB or RSR232 port of the MCU.
This mode can be enabled using the
mode which controls the mux shown in
Summary of Contents for ADV8003
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