DS26521L+ Maxim Integrated Products, DS26521L+ Datasheet - Page 215

• Manufacturer Part Number: DS26521L+
• Description: IC TXRX T1/E1/J1 64-LQFP
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS26521L+

• Number Of Drivers/receivers: 1/1
• Protocol: T1/E1/J1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Product: Framer
• Number Of Transceivers: 1
• Data Rate: 44.736 Mbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 220 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
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
215 of 258
SBE
4
0
RPL0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
RPL3
3
0
DS26521 Single T1/E1/J1 Transceiver
Table
RPL2
2
0
9-23.
RPL1
1
0
RPL0
0
0