AFBR-810BZ datasheet(5/48 Pages) AVAGO

5 / 48 page

Receiver Output Amplitude and De-emphasis

Receiver outputs can be programmed to provide several

levels of amplitude and de-emphasis. See Figure 5 for

de-emphasis definition. The user can program for peak-

to-peak amplitude and then a de-emphasis level. If zero

de-emphasisisselected,thenthesignalsteadystateequals

the peak-to-peak level. For other levels of de-emphasis the

selected de-emphasis reduces the steady-state from the

peak-to-peak level. The change from peak-to-peak level to

steady-state occurs within a bit time. See Rx Memory Map

01h Upper Page section addresses 228 - 233 for amplitude

programming details and addresses 234 – 239 for

de-emphasis programming details. For optimal performance at

10 Gb/s, lowering the De-Emphasis setting below the default value of 4

is not recommended.

1 bit

Data

Output

Voltage

De-Emphasis (DE)

Steady-State (SS)

De-Emphasis % = (DE/SS)(100%)

Figure 5. Definition of De-emphasis and Steady State

Control Signal Interface

The control interface includes dedicated signals for

address inputs, interrupt output and reset input and bidi-

rectional clock and data lines for a two-wire serial access

(TWS interface) to control and status and information

registers. The TWS interface is compatible with industry

standard two-wire serial protocol scaled for 3.3 volt LVTTL.

It is implemented as a slave device. Signal and timing

characteristics are further defined in the Control Charac-

teristics and Control Interface & Memory Map sections.

The registers of the serial interface memory are defined in

the Control Interface & Memory Map section.

Regulatory & Compliance Issues

Various standard and regulations apply to the modules.

These include eye-safety, EMC, ESD and RoHS. See the Reg-

ulatory Section for details regarding these and component

recognition. Please note the transmitter module is a Class

1M laser product – DO NOT VIEW RADIATION DIRECTLY

WITH OPTICAL INSTRUMENTS. See Regulatory Compliance

Table for details. When released, the AFBR- will support

this table.

Package Outline

The module is designed to meet the package outline

defined in the PPOD MSA. This MSA follows the outline

of the SNAP12 MSA except for the position of the MEG-

Array connector and pin assignments. See the package

outline and host board footprint figures (Figures 23 -26)

for details.

Handling and Cleaning

The transmitter and receiver modules can be damaged

by exposure to current surges and over voltage events.

Care should be taken to restrict exposure to the condi-

tions defined in the Absolute Maximum Ratings. Wave

soldering, reflow soldering and/or aqueous wash process

with the modules on board are not recommended. Normal

handling precautions for electrostatic discharge sensitive

devices should be observed.

Each module is supplied with an inserted port plug for

protection of the optical ports. This plug should always be

in place whenever a fiber cable is not inserted.

The optical connector includes recessed elements that

are exposed whenever a cable or port plug is not inserted.

Prior to insertion of a fiber optic cable, it is recommended

that the cable end be cleaned to avoid contamination

from the cable plug. The port plug ensures the Optic

remain clean and no addition cleaning should be needed.

In the event of contamination, dry nitrogen or clean dry

air at less than 20 psi can be used to dislodge the contami-

nation. The optical port features (e.g. guide pins) preclude

use of a solid instrument. Liquids are also not advised.

AFBR-810BZ Datasheet(PDF) 5 Page - AVAGO TECHNOLOGIES LIMITED

AFBR-810BZ Datasheet(HTML) 5 Page - AVAGO TECHNOLOGIES LIMITED

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Datasheet Download

Link URL