DS26521L+ Maxim Integrated Products, DS26521L+ Datasheet - Page 79

• 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

8.12
The bit-error-rate tester (BERT) block can generate and detect both pseudorandom and repeating bit patterns. It is
used to test and stress data-communication links. BERT functionality is dedicated for each of the transceivers.
Table 8-35
Table 8-35. Registers Related to BERT Configure, Control, and Status
Global BERT Interrupt Status Register
(GBISR)
Global BERT Interrupt Mask Register
(GBIMR)
Receive Expansion Port Control Register
(RXPC)
Receive BERT Port Bit Suppress Register
(RBPBS)
Receive BERT Port Channel Select
Registers 1 to 4 (RBPCS1:RBPCS4)
Transmit Expansion Port Control Register
(TXPC)
Transmit BERT Port Bit Suppress
Register (TBPBS)
Transmit BERT Port Channel Select
Registers 1 to 4 (TBPCS1:TBPCS4)
BERT Alternating Word Count Rate
Register (BAWC)
BERT Repetitive Pattern Set Register 1
(BRP1)
BERT Repetitive Pattern Set Register 2
(BRP2)
BERT Repetitive Pattern Set Register 3
(BRP3)
BERT Repetitive Pattern Set Register 4
(BRP4)
BERT Control Register 1 (BC1)
BERT Control Register 2 (BC2)
BERT Bit Count Register 1 (BBC1)
BERT Bit Count Register 2 (BBC2)
BERT Bit Count Register 3 (BBC3)
BERT Bit Count Register 4 (BBC4)
BERT Error Count Register 1 (BEC1)
BERT Error Count Register 2 (BEC2)
BERT Error Count Register 3 (BEC3)
BERT Latched Status Register (BLSR)
BERT Status Interrupt Mask Register
(BSIM)
Bit-Error-Rate Test (BERT) Function
shows the registers related to the configure, control, and status of the BERT.
REGISTER
0D4h, 0D5h, 0D6h,
1D4h, 1D5h, 1D6h,
ADDRESSES
FRAMER
110Ch
110Dh
110Ah
110Bh
110Eh
110Fh
1100h
1101h
1102h
1103h
1104h
1105h
1106h
1107h
1108h
1109h
0FAh
0FDh
0D7h
1D7h
08Ah
08Bh
18Ah
18Bh
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When the BERT issues an interrupt, a bit is
set.
When the BERT issues an interrupt, a bit is
set.
Enable for the receiver BERT.
Bit suppression for the receive BERT.
Channels to be enabled for the framer to
accept data from the BERT pattern generator.
Enable for the transmitter BERT
Bit suppression for the transmit BERT
Channels to be enabled for the framer to
accept data from the transmit BERT pattern
generator.
BERT alternating pattern count register.
BERT repetitive pattern set register 1.
BERT repetitive pattern set register 2.
BERT repetitive pattern set register 3.
BERT repetitive pattern set register 4.
Pattern selection and miscellaneous control.
BERT bit pattern length control.
BERT bit counter—increments for BERT bit
clocks.
BERT bit counter.
BERT bit counter.
BERT bit counter.
BERT error counter.
BERT error counter.
BERT error counter.
BERT status registers—denotes
synchronization loss and other status.
BERT Interrupt mask.
DS26521 Single T1/E1/J1 Transceiver
FUNCTION