ADV8003 Hardware Manual
Rev. B, August 2013
225
Function
spi_filter_sel
Description
0
2ns glitch rejection
1
5ns glitch rejection
4.2.8.3.
SPI Master Interface
The ADV8003 SPI master interface (serial port 2) is used by the ADV8003 to read the OSD binary file (output by
Blimp OSD
) from an
external SPI flash memory, and to copy it to the DDR2 memory. Note that the library of functions provided by ADI will take care of this
process; the information in this section is just provided so the user can find a suitable SPI flash memory which can be interfaced to the
ADV8003 SPI master interface.
The SPI master is designed to be compatible with the M25P16 and supports the FAST_READ command. The SPI master clock can be
configured to support up to 80 MHz. The SPI master, similar to the slave, can support the following modes:
•
CPOL = 0, CPHA=0
•
CPOL = 0, CPHA=1
•
CPOL = 1, CPHA=0
•
CPOL = 1, CPHA=1
shows the effect that these settings may have on the data.
23 22 21 ... 3
2
1
0
7
6
5
4
3
2
1
0
Instruction(0x0B)
24-bit Address
Dummy Byte
7
6
5
4
3
2
1
0
Data out 2
CS2
SCK2
MOSI2
MISO2
7
6
5
4
3
2
1
0
Data out 1
SCK2
SCK2
SCK2
CPOL CPHA
0
0
0
1
1
0
1
1
Figure 81: SPI Master Interface Timing and Data Format
The CPOL/CPHA can be configured through the following I
2
C registers.
spi_master_cpol
, IO Map,
Address 0x1A14[1]
This bit is used to select the SPI master clock polarity.
Function
spi_master_cpol
Description
0
Idle state, clock is low
1
Idle state, clock is high
spi_master_cpha
, IO Map,
Address 0x1A14[0]
This bit is used to select the SPI master clock phase.
Summary of Contents for ADV8003
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