Product manual

58 Cheetah 73FC Product Manual, Rev. C
Figure 17 provides the data output valid eye diagram relative to the bit cell time. Table 28 lists the data values.
Figure 17. Transmit eye diagram
9.6.4 Differential PECL input
The serial PECL input signal voltage characteristics are provided in Table 27.
Figure 18 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. Table 28 lists the data values.
Figure 18. Receive eye diagram
Table 27: Differential PECL input characteristics
Description Parameter Notes
Serial input voltage swing 400 < V
in
< 2.000 mV AC coupled
Table 28: Eye diagram data values
Link rate
1 GHz 2 GHz
Bit time 941 ps 470 ps
XMIT eye 725 ps min. 315 ps min.
RCV eye
Typical 659 ps 305 ps
Minimum 395 ps 226 ps
Bit Time
Vout (mv)
XMIT Eye
Bit Time
(typical)
RCV Eye
Vin (mv)
(minimum)