HW-FMC-VIDEO-DC-G Xilinx Inc, HW-FMC-VIDEO-DC-G Datasheet - Page 19

• Manufacturer Part Number: HW-FMC-VIDEO-DC-G
• Description: HARDWARE FMC-VIDEO DAUGHTER CARD
• Manufacturer: Xilinx Inc

Specifications of HW-FMC-VIDEO-DC-G

• Accessory Type: Daughter Card
• For Use With/related Products: Spartan 3A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FMC-Video Daughter Board
UG458 (v1.1) February 8, 2008
Control I
R
2
C
X-Ref Target - Figure 2-3
Two of the general-purpose I/O pins of the FMC interface are used to implement an I
bus to be used for general configuration and status. It was necessary to separate these
devices from the FMC I
occur with some of the IC and FMC slot configurations. Separating this bus eliminates this
danger.
As shown in
expander, and an I
interfaces. The I
the two cameras and the EDID EEPROM. The two cameras must be isolated behind this
switch because they are at the same device address and would conflict if both connected to
the same bus. The EDID EEPROM must be isolated since this bus normally has an I
master at the DVI video source. The interface to the EDID EEPROM should only be used to
program the EEPROM at times when it will not be read by the remote master.
X-Ref Target - Figure 2-4
The I/O expander is used to interface to miscellaneous control and status signals, as
identified in
Ctrl I C
Table
Figure
2
2
C multiplexer is used to access three other devices. These devices include
2
2-3.
C mux. The interface to the video IC is used to configure these
2-4, this I
2
C bus due to potential I
www.xilinx.com
FMC I2C
2
Figure 2-4: Control I
C bus directly connects to three of the video ICs, an I/O
Figure 2-3: FMC I
Analog Interface
Video Encoder
Video Decoder
I/O Expander
PCA9546A
PCA9555
ADV7179
ADV7180
AD9984A
I C Mux
2
0xE8
0x9A
0x40
0x54
0x42
2
C device address conflicts that would
2
C Bus
2
0xA0, A2, A4, A6
C Bus
EEPROM
IPMI
Camera 1
Camera 2
EEPROM
EDID
0xA0
0xB8
0xB8
ug458_04_102507
I2C Buses
2
C
2
C
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