Differential PECL input. Seagate ST173404FC

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.

Bit Time

XMIT Eye

Figure 17.

Transmit eye diagram

9.6.4

Differential PECL input

The serial PECL input signal voltage characteristics are provided in Table 27.

Table 27: Differential PECL input characteristics

Description

Serial input voltage swing

Parameter Notes

400 < V in

< 2.000 mV AC coupled

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.

Bit Time

Figure 18.

Receive eye diagram

Table 28: Eye diagram data values

Link rate

1 GHz

Bit time

XMIT eye

941 ps

725 ps min.

RCV eye

Typical 659 ps

Minimum 395 ps

2 GHz

470 ps

315 ps min.

305 ps

226 ps

RCV Eye

(typical)

(minimum)