DS2149 datasheet(10/32 Pages) MAXIM

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DS2149

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CR1 (B010000): Control Register 1

MSb

LSb

JASEL1

JASEL0

ENCENB

UNIENB

SYMBOL

POSITION

FUNCTION

JASEL1

CR1.7

Jitter attenuator select (Table 4-C)

JASEL0

CR1.6

Jitter attenuator select (Table 4-C)

ENCENB

CR1.5

B8ZS and NRZ control (Table 4-D)

UNIENB

CR1.4

BPV and NRZ control (Table 4-D)

CR1.3

Line build-out control (Table 4-E)

CR1.2

Line build-out control (Table 4-E)

CR1.1

Line build-out control (Table 4-E)

CR1.0

Line build-out control (Table 4-E)

Table 4-C. Jitter Attenuator Selection

JASEL1

JASEL0

JITTER ATTENUATOR FUNCTION

Transmit path

Receive path

Disabled

Table 4-D. Line Code and Interface Selection

UNIENB

ENCENB

LINE CODE

INTERFACE

AMI

Bipolar

AMI

NRZ

B8ZS

NRZ

Table 4-E. Line Build-out Selection

APPLICATION

OUTPUT SIGNAL

Rx GAIN (dB)

T1 Long Haul

0dB

T1 Long Haul

-7.5dB

T1 Long Haul

-15dB

T1 Long Haul

-22.5dB

T1 Long Haul

0dB

T1 Long Haul

-7.5dB

T1 Long Haul

-15dB

T1 Long Haul

-22.5dB

D4 Short Haul

T1 Short Haul

DSX-1 (0ft to 133ft)

T1 Short Haul

DSX-1 (133ft to 266ft)

T1 Short Haul

DSX-1 (266ft to 399ft)

T1 Short Haul

DSX-1 (399ft to 533ft)

T1 Short Haul

DSX-1 (533ft to 655ft)

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