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參數(shù)資料
| 型號： | DS26303 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
| 中文描述： | 3.3V、E1/T1/J1、短程、8通道線路接口單元 |
| 文件頁數(shù)： | 66/97頁 |
| 文件大?。?/td> | 966K |
| 代理商： | DS26303 |
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DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
66 of 97
6.9 BERT
The BERT is a software-programmable test-pattern generator and monitor capable of meeting most error-
performance requirements for digital transmission equipment. It generates and synchronizes to pseudorandom
patterns with a generation polynomial of the form x
n
+ x
y
+ 1, where n and y can take on values from 1 to 32 and to
repetitive patterns of any length up to 32 bits.
The transmit direction generates the programmable test pattern, and inserts the test pattern payload into the data
stream.
The receive direction extracts the test pattern payload from the receive data stream, and monitors the test pattern
payload for the programmable test pattern. The features include:
Programmable PRBS pattern.
The pseudorandom bit sequence (PRBS) polynomial (x
n
+ x
y
+ 1) and seed
are programmable (length n = 1 to 32, tap y = 1 to n – 1, and seed = 0 to 2
n
– 1).
Programmable repetitive pattern.
The repetitive pattern length and pattern are programmable (the length n =
1 to 32 and pattern = 0 to 2
– 1).
24-bit error count and 32-bit bit count registers
Programmable bit-error insertion.
Errors can be inserted individually, on a pin transition, or at a specific rate.
The rate 1/10
is programmable (n = 1 to 7).
Pattern synchronization at a 10
-3
BER.
Pattern synchronization is achieved even in the presence of a
random bit-error rate (BER) of 10
-3
.
6.9.1 Configuration and Monitoring
Set
PORT.CR1
.BENA = 1 to enable the BERT. The following tables show how to configure the on-board BERT to
send and receive common patterns.
Table 6-10. Pseudorandom Pattern Generation
BPCR
REGISTER
PLF[4:0]
(hex)
08
BERT.CR
TPIC,
RPIC
0
PATTERN TYPE
PTF[4:0]
(hex)
04
PTS
QRSS
BERT.
PCR
BERT.
SPR2
BERT.
SPR1
2
9
-1 O.153 (511 type)
2
11
-1 O.152 and O.153
(2047 type)
2
15
-1 O.151
2
20
-1 O.153
2
20
-1 O.151 QRSS
2
23
-1 O.151
0
0
0x0408
0xFFFF
0xFFFF
08
0A
0
0
0x080A
0xFFFF
0xFFFF
0
0D
0E
0
0
0x0D0E
0xFFFF
0xFFFF
1
10
13
0
0
0x1013
0xFFFF
0xFFFF
0
02
13
0
1
0x0253
0xFFFF
0xFFFF
0
11
16
0
0
0x1116
0xFFFF
0xFFFF
1
Table 6-11. Repetitive Pattern Generation
BPCR
REGISTER
PTF[4:0]
(hex)
(hex)
NA
PATTERN TYPE
PLF[4:0]
PTS
QRSS
BERT.
PCR
BERT.
SPR2
BERT.
SPR1
All 1s
00
1
0
0x0020
0xFFFF
0xFFFF
All 0s
NA
00
1
0
0x0020
0xFFFF
0xFFFE
Alternating 1s and 0s
NA
01
1
0
0x0021
0xFFFF
0xFFFE
Double alternating and 0s
NA
03
1
0
0x0023
0xFFFF
0xFFFC
3 in 24
NA
17
1
0
0x0037
0xFF20
0x0022
1 in 16
NA
0F
1
0
0x002F
0xFFFF
0x0001
1 in 8
NA
07
1
0
0x0027
0xFFFF
0xFF01
1 in 4
NA
03
1
0
0x0023
0xFFFF
0xFFF1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS26303G-120 | 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
| DS26303G-75 | 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
| DS26303GN-120 | 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
| DS26303GN-75 | 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
| DS26303L-120 | 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS26303_07 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
| DS26303-75DK | 功能描述:網(wǎng)絡(luò)開發(fā)工具 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
| DS26303DK | 功能描述:網(wǎng)絡(luò)開發(fā)工具 DS26303 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
| DS26303G-120 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
| DS26303G-75 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit |
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