9.6.2Differential PECL output
The serial PECL output signal voltage characteristics are provided in Table 26. The outputs are not AC coupled in order to deliver maximum signal without rise and fall time degradation. You must AC couple the receiver to isolate potentially different DC characteristics of the outputs and the receiver.
Table 26: | Differential PECL output characteristics |
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Description | Parameter | Notes | |
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Serial output voltage swing | 600 < Vout < 1300 mV | Centered at 1.32V | |
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Figure 18 provides the data output valid eye diagram relative to the bit cell time.
941 ps
Vout (mv)
800 ps
Figure 18. Transmit eye diagram
9.6.3Differential PECL input
The serial PECL input signal voltage characteristics are provided in Table 27.
Table 27: | Differential PECL input characteristics |
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Description | Parameter | Notes | |
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Serial input voltage swing | 200 < Vin < 1.300 mV | AC coupled | |
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Figure 19 provides the data valid eye diagram for typical and minimum requirements to recover data at the specified interface error rate. The inputs are AC coupled on the drive.
Vin (mv)
941 ps
659 ps
376 ps 
Typical
Minimum
Figure 19. Receive eye diagram
Savvio 15K.1 FC Product Manual, Rev. B | 65 |