Figure 14 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 14. Receive eye diagram

Table 30: 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.

1581/1132

RCV eye

Typical

659 ps

305 ps

145 ps

 

 

 

 

Minimum

395 ps

226 ps

113 ps

 

 

 

 

 

 

1.Short Ideal load.

2.End of compliance channel.

70

Cheetah NS FC Product Manual, Rev. B

Page 80
Image 80
Seagate ST3300955FC, ST3400755FC manual Receive eye diagram Eye diagram data values Link rate GHz