DS3172N Maxim Integrated, DS3172N Datasheet - Page 69

• Manufacturer Part Number: DS3172N
• Description: Network Controller & Processor ICs Dual DS3/E3 Single Chip Transceiver
• Manufacturer: Maxim Integrated

Specifications of DS3172N

• Part # Aliases: 90-31720-N00

Figure 10-9. Transmit Error Insert Logic
10.5 Per Port Resources
10.5.1 Loopbacks
There are several loop back paths available. The following table lists the loopback modes available for analog
loopback (ALB), line loopback (LLB), payload loopback (PLB) and diagnostic loopback (DLB). The LBM bits are
located in
Table 10-17. Loopback Mode Selections
GL.CR1.MEIMS
LBM[2:0]
GL.CR1.TMEI
10X
000
001
010
011
110
111
GPIO6 PIN
PORT.CR4.
(TMEI)
PORT.CR.MEIMS
PORT.CR.TMEI
ALB
0
1
0
0
0
0
0
LLB
0
0
1
0
0
1
0
0
1
BERT.TEICR.MEIMS
PLB
BERT.TEICR error
0
0
0
1
0
0
0
0
1
insertion bit
DLB
0
0
0
0
1
1
1
T3.TEIR error
insertion bit
69
0
1
0
1
0
1
BERT ERROR
INSERT
T3.TEIR.MEIMS
T3 ERROR
INSERT