82563EB/82564EB Gigabit Platform LAN Connect Networking Silicon

27

4.6

Kumeran (Serial) Interface

The Kumeran interface is electrically compatible with the SERDES implemented in 1000Base-BX

applications, as defined in the PICMG 3.1 Specification, Version 1.0, Chapter 5, Backplane

Physical Layers Interfaces. It also implements electrical idle as described in section 3.5.4. As part

of the electrical idle implementation, the Kumeran interface also needs to be able to detect when

the 631xESB/632xESB is in electrical idle.

4.6.1

Transmit

The transmit specifications are measured with the following test load.

Peak differential input

voltage

MDI[1:0]

10Base-T

--

mV

Signal Detect Assertion

MDI[1:0]

100Base-TX

1000

mV

peak

-

peak

Signal Detect De-

assertion

MDI[1:0]

-

200

mV

peak

-

peak

a.

IEEE 802.3ab Figure 40-19 points A&B.

b.

IEEE 802.3 Clause 14, Figure 14.9 shows the template for the “far end” wave form. This template allows as little as 495mV peak differential

voltage at the far end receiver.

c.

See IEEE 802.3, Clause 14, Figure 14.17 for the template for the receive wave form.

d.

The ANSI TP-PMD specification requires that any received signal with peak-to-peak differential amplitude greater than 1000 mV should turn on

signal detect. The 82563EB/82564EB will accept signals typically with 460 mV peak-to-peak differential amplitude.

e.

The ANSI TP-PMD specification requires that any received signal with peak-to-peak differential amplitude less than 200 mV should de-assert

signal detect. The 82563EB/82564EB will reject signals typically with 360 mV peak-to-peak differential amplitude

Table 26. Link (MDI) Interface Electrical Specification

Symbol

Parameter

Pins

Condition

Min

Typ

Max

Unit

Table 27. Kumeran (Serial) Transmit Specifications

Symbol

Parameter

Min

Typ

Max

Unit

Notes

Data Rate (original data)

999.9

1000

1000.1

Mb/s

1000 mb/s ± 100 ppm

Signaling Speed (raw data

rate of encoded data)

1249.875

1250

1250.125

V

1250 mb/s ± 100 ppm

Clock Tolerance

-100

-

+100

ppm

Differential Output

Amplitude (peak to peak)

750

-

1350

mV

Differential Output

Amplitude (peak)

375

-

675

mV

Return Loss

10

-

-

dB

Impedance at Connection

70

100

130

Ω