AN 713: DC Coupling in Stratix V Devices

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ID 683790
Date 8/10/2015
Public
Document Table of Contents
Document Table of Contents x
1. DC-Coupling in Stratix V Devices
1. DC-Coupling in Stratix V Devices x
1.1. Stratix V DC-Coupling Scenarios 1.2. Document Revision History
1.1. Stratix V DC-Coupling Scenarios x
1.1.1. Connecting a Stratix V PCML Transceiver to Another Stratix V PCML Transceiver 1.1.2. Connecting a Stratix V PCML Transmitter to Another Stratix V LVDS Receiver 1.1.3. Connecting Stratix V PCML Transmitter to Another Altera PCML Receiver 1.1.4. Stratix V PCML Receiver to Another Altera PCML Transmitter 1.1.5. Stratix V PCML Transmitter to Non-Altera Device Receiver 1.1.6. Non-Altera Device Transmitter to Stratix V PCML Receiver
1. DC-Coupling in Stratix V Devices

1. DC-Coupling in Stratix V Devices

AC-coupling consists of using a series capacitor with the transceiver link to filter out the DC component from a signal. DC-coupling allows both AC and DC signals to pass through a connection and does not require an additional series capacitor. Stratix® V GX and GS devices support DC-coupling on transmitter and receiver pins. Stratix V GT devices do not support DC-coupling on the ATT channels (28-Gbps channels). DC-coupling is supported on the GX channels of the Stratix V GT device.

One of the restrictions for DC-coupling Altera devices with non-Altera devices is that the transmitter and the receiver common mode voltages should match. When the transmitter and receiver common mode voltages are different, the two conflicting common mode voltages settle down to an intermediate common mode voltage level.

Figure 1. DC-Coupled Link



Section Content
Stratix V DC-Coupling Scenarios
Document Revision History

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