DS3134 datasheet(73/203 Pages) DALLAS

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DS3134

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Bit 11 / Repetitive Pattern Length Bit 3 (RPL3).

RPL0 is the LSB and RPL3 is the MSB of a nibble that describes the how long the repetitive pattern is.

The valid range is 17 (0000) to 32 (1111). These bits are ignored if the receive BERT is programmed for

a pseudorandom pattern. To create repetitive patterns less than 17 bits in length, the user must set the

length to an integer number of the desired length that is less than or equal to 32. For example, to create a

6 bit pattern, the user can set the length to 18 (0001) or to 24 (0111) or to 30 (1101).

Repetitive Pattern Length Map

Length

Code

Length

Code

Length

Code

Length

Code

17 Bits

0000

18 Bits

0001

19 Bits

0010

20 Bits

0011

21 Bits

0100

22 Bits

0101

23 Bits

0110

24 Bits

0111

25 Bits

1000

26 Bits

1001

27 Bits

1010

28 Bits

1011

29 Bits

1100

30 Bits

1101

31 Bits

1110

32 Bits

1111

Bit 13 / Interrupt Enable for Counter Overflow (IEOF). Allows the receive BERT to cause an

interrupt if either the Bit Counter or the Error Counter overflows.

0 = interrupt masked

1 = interrupt enabled

Bit 14 / Interrupt Enable for Bit Error Detected (IEBED). Allows the receive BERT to cause an

interrupt if a bit error is detected.

0 = interrupt masked

1 = interrupt enabled

Bit 15 / Interrupt Enable for Change of Synchronization Status (IESYNC). Allows the receive

BERT to cause an interrupt if there is a change of state in the synchronization status (i.e. the receive

BERT either goes into or out of synchronization).

0 = interrupt masked

1 = interrupt enabled

BERTC1

0504h

5432

EIB2

EIB1

EIB0

SBE

n/a

Alternating Word Count

Note: Bits that are underlined are read only, all other bits are read-write; default value for all bits is 0.

Bit 0 / Transmit Pattern Load (TC). A low to high transition loads the pattern generator with

Repetitive or pseudorandom pattern that is to be generated. This bit should be toggled from low to high

whenever the host wishes to load a new pattern. Must be cleared and set again for a subsequent loads.

DS3134 Datasheet(PDF) 73 Page - Dallas Semiconductor

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