DS3134 datasheet(75/203 Pages) DALLAS

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DS3134

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BERTRP1: BERT Repetitive Pattern Set 1 (upper word)

BERT Repetitive Pattern Set

BERT Repetitive Pattern Set (upper byte)

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

Bits 0 to 31 / BERT Repetitive Pattern Set (BERTRP0 and BERTRP1). These registers must be

properly loaded for the BERT to properly generate and synchronize to a repetitive pattern, a

pseudorandom pattern, or an alternating word pattern. For a repetitive pattern that is less than 32 bits,

then the pattern should be repeated so that all 32 bits are used to describe the pattern. For example if the

pattern was the repeating 5-bit pattern …01101… (Where right most bits are one sent first and received

first) then PBRP0 should be loaded with xB5AD and PBRP1 should be loaded with x5AD6. For a

pseudorandom pattern, both registers should be loaded with all ones (i.e. xFFFF). For an alternating word

pattern, one word should be placed into PBRP0 and the other word should be placed into PBRP1. For

example, if the DDS stress pattern "7E" is to be described, the user would place x0000 in PBRP0 and

x7E7E in PBRP1 and the alternating word counter would be set to 50 (decimal) to allow 100 bytes of 00h

followed by 100 bytes of 7Eh to be sent and received.

BERTBC0

0510h

BERTBC1

0514h

BERTBC0: BERT Bit Counter 0 (lower word)

5432

BERT 32-Bit Bit Counter (lower byte)

BERT 32-Bit Bit Counter

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

BERTBC1: BERT Bit Counter 0 (upper word)

BERT 32-Bit Bit Counter

BERT 32-Bit Bit Counter (upper byte)

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

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