Seagate Cheetah 15K.5 FC ST373455FC - Manual (Page 83)

Cheetah 15K.5 FC Product Manual, Rev. D 73
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.
Figure 19. Receive eye diagram
Table 32: Eye diagram data values
Link rate
1 GHz 2 GHz 4 GHz
Bit time 941 ps 470 ps 235 ps
XMIT eye 725 ps min. 315 ps min. 158
1
/113
2
1. Short Ideal load.
2. End of compliance channel.
RCV eye
Typical 659 ps 305 ps 145 ps
Minimum 395 ps 226 ps 113 ps
941 ps
659 ps
Vin (mv)
Typical
Minimum 376 ps