DS31412N Maxim Integrated Products, DS31412N Datasheet - Page 21

• Manufacturer Part Number: DS31412N
• Description: IC 12CH DS3/3 FRAMER 349-BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS31412N

• Controller Type: DS3/E3 Framer
• Interface: LIU
• Voltage - Supply: 3.135 V ~ 3.465 V
• Current - Supply: 960mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 349-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 7-B. BERT/Loopback Interaction—Overhead Bits
Note 1: In M23 mode or E3 mode, the transmit formatter sources the C bits from the appropriate bit positions of the TDAT data stream.
Note 2: When BM[1:0] = 11, the BERT expects a full-bandwidth (payload plus overhead) pattern to come in on the TDAT pin. In M23 mode or
DLB
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
CONFIGURATION BITS
E3 mode with BM[1:0] = 11, the transmit formatter sources the C bits from the appropriate bit positions of the TDAT data stream, even
though those bit positions are actually part of the full-bandwidth BERT pattern.
LLB
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
PLB
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
BM [1:0]
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
Framer and RDAT
Framer, RDAT and BERT
Framer and RDAT
Framer
Not used
Not used
Not used
Not used
TPOS/TNEG, Framer,
and RDAT
TPOS/TNEG, Framer,
RDAT, and BERT
TPOS/TNEG, Framer,
and RDAT
TPOS/TNEG and Framer
Framer and RDAT
Framer, RDAT, and
BERT
Framer and RDAT
Framer
From RPOS/RNEG To:
21 of 89
BITS AT OVERHEAD BIT POSITIONS
Not used (Note 1)
Not used
Not used (Note 1)
BERT (Note 2)
Not used (Note 1)
Not used
Not used (Note 1)
BERT (Note 2)
Not used
Not used
Not used
BERT (Note 2)
Not used (Note 1)
Not used
Not used (Note 1)
BERT (Note 2)
From TDAT To:
TPOS/TNEG
Not used
TPOS/TNEG
TPOS/TNEG
TPOS/TNEG,
Framer, and RDAT
Not used
TPOS/TNEG,
Framer, and RDAT
TPOS/TNEG and
Framer
Not used
Not used
Not used
Not used
TPOS/TNEG
Not used
TPOS/TNEG
TPOS/TNEG
From Formatter To:
Not generated
TPOS, TNEG
Not generated
RDAT
Not generated
TPOS/TNEG,
Framer, BERT,
and RDAT
Not generated
RDAT
Not generated
Not used
Not generated
RDAT
Not generated
TPOS/TNEG
Not generated
RDAT
From BERT To: