ds26518 Maxim Integrated Products, Inc., ds26518 Datasheet - Page 95

• Manufacturer Part Number: ds26518
• Description: 8-port T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

9.13
The BERT (Bit Error Rate Tester) 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.
The registers related to the configure, control, and status of the BERT are shown in
Table 9-43. Registers Related to Configure, Control, and Status of BERT
Global BERT Interrupt Status
Register 1 (GBISR1)
Global BERT Interrupt Mask Register
1 (GBIMR1)
Receive Expansion Port Control
Register (RXPC)
Receive BERT Port Bit Suppress
Register (RBPBS)
Receive BERT Port Channel Select
Registers 1 to 4 (RBPCS1-4)
Transmit Expansion Port Control
Register (TXPC)
Transmit BERT Port Bit Suppress
Register (TBPBS)
Transmit BERT Port Channel Select
Registers 1 to 4 (TBPCS1-4)
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)
Note: The addresses shown above are for Framer 1. Addresses for Framers 2 to 8 can be calculated using the following: Framer N = (Framer 1
address + (n - 1) x 200hex); where n = 2 to 8 for Framers 2 to 8.
Bit Error-Rate Test Function (BERT)
REGISTER
0D4h, 0D5h, 0D6h,
1D4h, 1D5h, 1D6h,
ADDRESSES
FRAMER 1
00FAh
00FDh
110Ch
110Dh
110Ah
110Bh
110Eh
110Fh
1100h
1101h
1102h
1103h
1104h
1105h
1106h
1107h
1108h
1109h
0D7h
1D7h
08Ah
08Bh
18Ah
18Bh
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When any of the 8 BERTs issue an interrupt, a bit
will be set.
When any of the 8 BERTs issue an interrupt, a bit
will be 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 misc control
BERT bit pattern length control
Increments for BERT bit clocks.
BERT bit counter.
BERT bit counter.
BERT bit counter.
BERT error counter.
BERT error counter.
BERT error counter.
Denotes synchronization loss and other status.
BERT interrupt mask.
DS26518 8-Port T1/E1/J1 Transceiver
Table
FUNCTION
9-43.