sii1162 Silicon image, sii1162 Datasheet - Page 26

• Manufacturer Part Number: sii1162
• Description: Panellink Transmitter
• Manufacturer: Silicon image

SiI 1162 PanelLink Transmitter
Data Sheet
Transmitter Layout
The routing for the SiI 1162 chip is relatively simple since no spiral skew compensation is needed. However, a
few small precautions are required to achieve the full performance and reliability of DVI.
The Transmitter can be placed fairly far from the output connector, but care should be taken to route each
differential signal pair together and achieve impedance of 100Ω between the differential signal pair. However,
note that the longer the differential traces are between the transmitter and the output connector, the higher the
chance that external signal noise will couple onto the low-voltage signals and affect image quality.
Do not split or have asymmetric trace routing between the differential signal pair. Vias are very inductive and can
cause phase delay if applied unevenly within a differential pair. Vias should be minimized or avoided if possible by
placing all differential traces on the top layer of the PCB.
Figure 24 illustrates an incorrect routing of the differential signal from the SiI 1162 to the DVI connector. Figure 25
illustrates the correct method to route the differential signal from the SiI 1162 to the DVI connector. Figure 26
illustrates recommended routing for differential traces at the DVI connector.
`
SiI
1162
Figure 24. Example of Incorrect Differential Signal Routing
SiI
1162
Figure 25. Example of Correct Differential Signal Routing
SiI -DS-0081-B
22