DS21448 データシートの表示（PDF） - Maxim Integrated

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DS21448

3.3V E1/T1/J1 Quad Line Interface

Maxim Integrated 

Figure 1-2. Receive Logic Detail

DS21448 3.3V T1/E1/J1 Quad Line Interface

FROM

REMOTE

LOOPBACK

ROUTED TO

ALL BLOCKS

CLOCK

INVERT

CCR2.0

B8ZS/HDB3

DECODER

NRZ DATA

BPV/CV/EXZ

RCLK

MUX

RPOS

RNEG

4 OR 8 ZERO DETECT

16 ZERO DETECT

CCR2.3

CCR6.2/ RIR1.5

CCR6.0/

CCR6.1

ALL-ONES

DETECTOR

LOOP CODE

DETECTOR

SR.4 RIR1.3 SR.6 SR.7

PRBS

DETECTOR

SR.0

MUX

CCR1.6 PBEO

CCR6.0

RIR1.7

RIR1.6

CCR1.4

16-BIT ERROR

COUNTER (ECR)

Figure 1-3. Transmit Logic Detail

CCR1.6

CCR3.3 CCR3.4

TO REMOTE

LOOPBACK

CCR3.1

OR

GATE

1

BPV

INSERT

MUX

CCR2.2

B8ZS/

HDB3

CODER

CCR3.0

LOGIC

ERROR

INSERT

MUX

PRBS

GENERATOR

LOOP CODE

GENERATOR

OR

GATE

0

0

MUX

1

RCLK

ROUTED TO CCR1.1

ALL BLOCKS

0

MUX

1

OR

GATE

AND

GATE

JACLK

(FROM MCLK)

LOSS-OF-TRANSMIT

CLOCK DETECT

CCR1.2

CCR1.0

TO LOTC OUTPUT PIN SR.5

CLOCK

INVERT

CCR2.1

TPOS

TNEG

TCLK

6 of 60

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