configuration of the OSD through the IO Map I
4.2.8.1. Overview
It is possible to access the DDR2 and OSD SPI registers in one of two ways:
•
The ADV8003 SPI master interface (serial port 2) can pull in resource data to DDR2 memory from an external SPI flash
memory, as shown in
•
The system MCU (SPI master) can write OSD data into DDR2 memory using the ADV8003 SPI slave interface (serial port 1), as
shown in
Figure
Rev. B, August 2013
C registers). The SPI slave hardware interface is also described in this section.
2
Figure
77.
78.
OSD_CORE
DDR2 Memory
Figure 77: Data Loaded from SPI Flash Through ADV8003 SPI Master Interface
SPI
Master
FLASH
MEM
218
ADV8003 Hardware Manual
Config
Register
SPI
I2C
Slave
Slave
System
Controller(CPU)
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