Datasheet

AD8153

Rev. 0 | Page 14 of 24

LB_A LB_B LB_C SEL BICAST Output A Output B Output C

1 0 1 X 1 Input A Input C Input C

1 0 1 1 X Input A Input C Input C

1 1 0 0 X Input A Input B Input A

1 1 0 1 X Input A Input B Input B

1 1 1 X X Input A Input B Input C

RECEIVE EQUALIZATION

In backplane applications, the AD8153 needs to compensate for

signal degradation caused by long traces. The device supports

two levels of input equalization, configured on a per-port basis.

Tabl e 6 summarizes the high-frequency asymptotic gain boost

for each setting.

Table 6. Receive Equalization Settings

EQ_A/B/C EQ Boost

0 6 dB

1 12 dB

TRANSMIT PRE-EMPHASIS

Transmitter pre-emphasis levels can be set by pin control or

through the control registers when using the I

C interface. Pin

control allows two settings of PE. The control registers provide

two additional settings.

Table 7. Pre-Emphasis Settings

Serial Mode Pin Mode

PE_A/B/C Setting PE_A/B/C PE Boost (%) PE Boost (dB)

0 0 0 0

1 N/A 25 1.9

2 1 50 3.5

3 N/A 75 4.9