DS3141+ Maxim Integrated Products, DS3141+ Datasheet - Page 45

• Manufacturer Part Number: DS3141+
• Description: IC FRAMER DS3/E3 SNGL 144CSBGA
• Manufacturer: Maxim Integrated Products

Specifications of DS3141+

• Controller Type: DS3/E3 Framer
• Interface: LIU
• Voltage - Supply: 3.135 V ~ 3.465 V
• Current - Supply: 80mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 144-CSBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.9 BERT
The BERT block can generate and detect the following patterns:
§
§
§
The BERT receiver has a 24-bit error counter and 32-bit bit counter to allow testing to proceed for long periods
without host processor intervention. It can generate interrupts on detecting a bit error, a change in synchronization,
or a counter overflow. The BERT can be selected to transmit and receive on the line side or the equipment side.
The synchronization algorithm works on a 32-bit block of data, not in a sliding window fashion.
The DS3/E3 formatter can be configured to transmit AIS when the BERT is not being used to test the far end, such
as when DLB is active or when BM[1:0] = 1X. When DLB is active, the BERT is used to test the inner workings of
the chip, and when BM[1:0] = 1X, the BERT is used to test devices connected on the equipment side (TDAT and
RDAT). In either case, BERT patterns are transmitted to the far end on TPOS and TNEG unless the DS3/E3
formatter is configured to transmit AIS by setting T3E3CR1:TAIS = 1.
7.9.1 BERT Register Description
Table 7-G. BERT Register Map
ADDR
3Ah
3Ch
3Dh
3Eh
3Fh
30h
31h
32h
33h
38h
39h
40h
41h
42h
43h
44h
45h
46h
Maximal-length pseudorandom patterns up to 2
A repetitive pattern from 1 to 32 bits in length
Alternating (16-bit) words that alternate every 1 to 256 words
REGISTER
BBECR1
BBECR2
BBECR3
BRPR1
BRPR2
BRPR3
BRPR4
BBCR1
BBCR2
BBCR3
BBCR4
BSRIE
BCR1
BCR2
BCR3
BCR4
BSRL
BSR
BBC15
BBC23
BBC31
BEC15
BEC23
AWC7
BBC7
BEC7
BIT 7
RP15
RP23
RP31
BM1
RP7
N/A
N/A
N/A
N/A
N/A
BBC14
BBC22
BBC30
BEC14
BEC22
AWC6
BBC6
BEC6
BIT 6
RP14
RP22
RP30
BM0
PS2
RP6
N/A
N/A
N/A
N/A
BBC13
BBC21
BBC29
BEC13
BEC21
AWC5
BENA
BBC5
BEC5
RA1L
RP13
RP21
RP29
BIT 5
PS1
RA1
RP5
N/A
N/A
31
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BBC12
BBC20
BBC28
BEC12
BEC20
AWC4
RA0L
RP12
RP20
RP28
BBC4
BEC4
BIT 4
TINV
RA0
RP4
PS0
N/A
N/A
BBC11
BBC19
BBC27
BEC11
BEC19
BEDIE
AWC3
BEDL
BBC3
BEC3
BIT 3
RPL3
RP11
RP19
RP27
RINV
EIB2
RP3
N/A
RESYNC
BBCOIE
BBCOL
BBC10
BBC18
BBC26
BEC10
BEC18
AWC2
BBCO
BBC2
BEC2
RPL2
RP10
RP18
RP26
BIT 2
EIB1
RP2
BECOIE
BECOL
BBC17
BBC25
BEC17
AWC1
BECO
RPL1
RP17
RP25
BBC1
BBC9
BEC1
BEC9
BIT 1
EIB0
RP1
RP9
TC
SYNCIE
SYNCL
BBC16
BBC24
BEC16
AWC0
SYNC
BBC0
BBC8
BEC0
BEC8
BIT 0
RPL0
RP16
RP24
SBE
RP0
RP8
LC