HC4GX15 Datasheet, PDF(131/668 Page) Altera Corporation – HardCopy IV Device Handbook

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HC4GX15 Datasheet, PDF (131/668 Pages) Altera Corporation – HardCopy IV Device Handbook

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Chapter 8: High-Speed Differential I/O Interfaces and DPA in HardCopy IV Devices

Guidelines for DPA-Disabled Differential Channels

Figure 8â21. Corner and Center Left and Right PLLs Driving DPA-Disabled Differential I/Os in the Same Bank

Corner

Left/Right PLL

Reference

CLK

Diff RX Diff TX

Corner

Left/Right PLL

Reference

CLK

DPA-disabled

Diff I/O

Diff RX Diff TX

Diff RX Diff TX

Diff RX Diff TX

Diff RX Diff TX

Diff RX Diff TX

Diff RX Diff TX

Diff RX Diff TX

Diff RX Diff TX

DPA-disabled

Diff I/O

DPA-disabled

Diff I/O

DPA-disabled

Diff I/O

DPA-disabled

Diff I/O

DPA-disabled

Diff I/O

DPA-disabled

Diff I/O

DPA-disabled

Diff I/O

DPA-disabled

Diff I/O

Channels driven by

Corner Left/Right PLL

No separation buffer needed

Channels driven by

Center Left/Right PLL

Diff RX Diff TX

Reference

CLK

Center

Left/Right PLL

DPA-disabled

Diff I/O

Reference

CLK

Center

Left/Right PLL

8â21

Â© January 2010 Altera Corporation

HardCopy IV Device Handbook, Volume 1

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