Seagate ST31000640FC Receive eye diagram Eye diagram data values, Link rate, 1 GHz, 2 GHz, 4 GHz

Figure 11 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 11. Receive eye diagram

Table 28: 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.

Barracuda ES.2 FC Product Manual, Rev. B 65