The following table summarizes the DC specifications of the GTM transceivers in Versal Premium devices. Consult the Versal Adaptive SoC GTM Transceivers Architecture Manual (AM017) for further details.
Symbol | DC Parameter | Conditions | Min | Typ | Max | Units | |
---|---|---|---|---|---|---|---|
DVPPIN | Differential peak-to-peak input voltage (external AC coupled) | PAM4 | 600 | – | 900 | mV | |
NRZ | 150 | – | 900 | mV | |||
DVPPOUT | Differential peak-to-peak output voltage 1 | Transmitter output swing is set
to 1000100
|
800 | – | – | mV | |
VCMOUTDC | Common mode output voltage: DC (equation based) | When remote RX is terminated to float | TX output swing ≥ 800 mV | VAVCCAUX – DVPPOUT/2 | mV | ||
TX output swing < 800 mV | VAVTT – VVPPOUT/2 | mV | |||||
When remote RX is terminated to VRX_TERM 2 | TX output swing ≥ 800 mV | VAVCCAUX – DVPPOUT/4 – (VAVCCAUX – VRX_TERM)/2 | mV | ||||
TX output swing < 800 mV | VAVTT – DVPPOUT/4 – (VAVTT – VRX_TERM)/2 | mV | |||||
VCMOUTAC | Common mode output voltage: AC coupled | Equation based | VAVCCAUX – DVPPOUT/2 | mV | |||
RIN | Differential input resistance | – | 100 | – | Ω | ||
ROUT | Differential output resistance | – | 100 | – | Ω | ||
TOSKEW | Transmitter output pair (TXP and TXN) intra-pair skew | – | – | 3.7 | ps | ||
CEXT | Recommended external AC coupling capacitor 3 | – | 100 | – | nF | ||
|
Figure 1. Single-Ended Peak-to-Peak Voltage
Figure 2. Differential Peak-to-Peak Voltage
The following tables summarize the DC specifications of the clock input/output levels of the GTM transceivers in Versal Premium devices. Consult the Versal Adaptive SoC GTM Transceivers Architecture Manual (AM017) for further details.
Symbol | DC Parameter | Min | Typ | Max | Units |
---|---|---|---|---|---|
VIDIFF | Differential peak-to-peak input voltage | 250 | – | 1600 | mV |
VICM | REFCLK common-mode input voltage | – | VGTM_AVCC | – | mV |
RIN | Differential input resistance | – | 100 | – | Ω |
CEXT | Required external AC coupling capacitor | – | 10 | – | nF |
Symbol | Description | Conditions | Min | Typ | Max | Units |
---|---|---|---|---|---|---|
VOL | Output Low voltage for P and N | RT = 100Ω across P and N signals | 100 | – | 330 | mV |
VOH | Output High voltage for P and N | RT = 100Ω across P and N signals | 500 | – | 700 | mV |
VDDOUT | Differential output voltage (P–N), P = High (N–P), N = High | RT = 100Ω across P and N signals | 300 | – | 430 | mV |
VCMOUT | Common mode voltage | RT = 100Ω across P and N signals | 300 | – | 500 | mV |