ds26524 Maxim Integrated Products, Inc., ds26524 Datasheet - Page 228

• Manufacturer Part Number: ds26524
• Description: Ds26524 Quad T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 7 to 5: Error Insert Bits 2 to 0 (EIB[2:0]). Will automatically insert bit errors at the prescribed rate into the
generated data pattern. Can be used for verifying error detection features. See
Table 9-23. BERT Error Insertion Rate
Bit 4: Single Bit Error Insert (SBE). A low-to-high transition will create a single bit error. Must be cleared and set
again for a subsequent bit error to be inserted.
Bits 3 to 0: Repetitive Pattern Length Select 3 to 0 (RPL[3:0]). RPL0 is the LSB and RPL3 is the MSB of a
nibble that describes how long the repetitive pattern is. The valid range is 17 (0000) to 32 (1111). These bits are
ignored if the receive BERT is programmed for a pseudorandom pattern. To create repetitive patterns fewer than
17 bits in length, the user must set the length to an integer number of the desired length that is less than or equal
to 32. For example, to create a 6-bit pattern, the user can set the length to 18 (0001) or to 24 (0111) or to 30
(1101). See
Table 9-24. BERT Repetitive Pattern Length Select
EIB2
0
0
0
0
1
1
1
1
LENGTH
(BITS)
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
EIB1
0
0
1
1
0
0
1
1
Table
EIB2
7
0
EIB0
0
1
0
1
0
1
0
1
RPL3
9-24.
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
No errors automatically inserted
10E-1
10E-2
10E-3
10E-4
10E-5
10E-6
10E-7
BC2
BERT Control Register 2
1106h + (10h x n): where n = 0 to 3, for Ports 1 to 4
EIB1
ERROR RATE INSERTED
6
0
RPL2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
EIB0
5
0
RPL1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
228 of 273
SBE
0
4
RPL0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
RPL3
3
0
Table
RPL2
2
0
9-23.
RPL1
1
0
RPL0
0
0