Rainbow Electronics DS3134 User Manual
Page 75
DS3134
75 of 203
BERTRP1: BERT Repetitive Pattern Set 1 (upper word)
23
22
21
20
19
18
17
16
BERT Repetitive Pattern Set
31
30
29
28
27
26
25
24
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.
Register Name:
BERTBC0
Register Description: BERT 32-Bit Bit Counter (lower word)
Register Address:
0510h
Register Name:
BERTBC1
Register Description: BERT 32-Bit Bit Counter (upper word)
Register Address:
0514h
BERTBC0: BERT Bit Counter 0 (lower word)
7
6
5
4
3
2
1
0
BERT 32-Bit Bit Counter (lower byte)
15
14
13
12
11
10
9
8
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)
23
22
21
20
19
18
17
16
BERT 32-Bit Bit Counter
31
30
29
28
27
26
25
24
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.