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DS21Q55

8.4 T1 Information Register

 

 

 

 

 

 

Register Name:

INFO1

 

 

 

 

 

 

 

Register Description:

Information Register 1

 

 

 

 

 

Register Address:

10h

 

 

 

 

 

 

 

Bit #

7

6

5

4

3

2

1

0

 

Name

RPDV

TPDV

COFA

8ZD

16ZD

SEFE

B8ZS

FBE

 

Default

0

0

0

0

0

0

0

0

 

Bit 0/Frame Bit Error Event (FBE). Set when a Ft (D4) or FPS (ESF) framing bit is received in error.

Bit 1/B8ZS Code Word Detect Event (B8ZS). Set when a B8ZS code word is detected at RPOS and RNEG independent of whether the B8ZS mode is selected or not via T1TCR2.7. Useful for automatically setting the line coding.

Bit 2/Severely Errored Framing Event (SEFE). Set when two out of six framing bits (Ft or FPS) are received in error.

Bit 3/Sixteen Zero Detect Event (16ZD). Set when a string of at least 16 consecutive zeros (regardless of the length of the string) have been received at RPOSI and RNEGI.

Bit 4/Eight Zero Detect Event (8ZD). Set when a string of at least eight consecutive zeros (regardless of the length of the string) have been received at RPOSI and RNEGI.

Bit 5/Change of Frame Alignment Event (COFA). Set when the last resync resulted in a change of frame or multiframe alignment.

Bit 6/Transmit Pulse Density Violation Event (TPDV). Set when the transmit data stream does not meet the ANSI T1.403 requirements for pulse density.

Bit 7/Receive Pulse Density Violation Event (RPDV). Set when the receive data stream does not meet the ANSI T1.403 requirements for pulse density.

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Please contact telecom.support@dalsemi.com or search http://www.maxim-ic.com for updated

information.

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Maxim DS21Q55 specifications T1 Information Register, INFO1, 10h