DS15MB200 datasheet(4/10 Pages) NSC

4 / 10 page

Output Characteristics

The output characteristics of the DS15MB200 have been

optimized for point-to-point backplane and cable applica-

tions, and are not intended for multipoint or multidrop signal-

ing.

A 100

Ω output (source) termination resistor is incorporated

in the device to eliminate the need for an external resistor,

providing excellent drive characteristics by locating the

source termination as close to the output as physically pos-

sible.

Pre-Emphasis Controls

The pre-emphasis is used to compensate for long or lossy

transmission media. Separate pins are provided for each

output to minimize power consumption. Pre-emphasis is

programmable to be off or on per the Pre-emphasis Control

Table.

PREx_n (Note 4)

Output Pre-emphasis

00%

100%

Note 4: Applies to PREA_0, PREA_1, PREB_0, PREB_1, PREL_0,

PREL_1

Multiplexer Truth Table (Note 5)

Data Inputs

Control Inputs

Output

SIA_0

SIB_0

MUX_S0

ENL_0

LO_0

valid

SIB_0

valid

SIA_0

X = Don’t Care

Z = High Impedance (TRI-STATE)

Repeater/Buffer Truth Table (Note 5)

Data

Input

Control Inputs

Outputs

LI_0

ENA_0

ENB_0

SOA_0

SOB_0

valid

LI_0

valid

LI_0

valid

LI_0

X = Don’t Care

Z = High Impedance (TRI-STATE)

Note 5: Same functionality for channel 1

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