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| 型號： | DS21348TN |
| 英文描述： | 3.3V E1/T1/J1 Line Interface |
| 中文描述： | 3.3 E1/T1/J1線路接口 |
| 文件頁數(shù)： | 45/73頁 |
| 文件大?。?/td> | 551K |
| 代理商： | DS21348TN |
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DS21348/Q348
45 of 73
FUNCTION OF ECRS BITS AND RNEG PIN
Table 8-4
E1 or T1
(CCR1.7)
(CCR6.2)
(CCR6.1)
0
0
0
0
0
0
0
0
1
0
0
1
1
0
X
1
0
X
1
0
X
1
0
X
X
1
X
ECRS2
ECRS1
ECRS0
(CCR6.0)
0
1
0
1
0
1
0
1
X
RHBE
(CCR2.3)
X
X
X
X
0
0
1
1
X
FUNCTION OF ECR
COUNTERS/RNEG
1
CVs
BPVs (HDB3 code words not counted)
CVs + EXZs
BPVs + EXZs
BPVs (B8ZS code words not counted)
BPVs + 8 EXZs
BPVs
BPVs + 16 EXZs
PRBS Errors
2
NOTES:
1.
RNEG outputs error data only when in NRZ mode (CCR1.6 = 1)
2.
PRBS errors will always be output at PBEO independent of ECR control bits and NRZ mode and will
not be present at RNEG.
8.4.1 Error Counter Update
A transition of the ECUE (CCR1.4) control bit from 0 to 1 will update the ECR registers with the current
values and reset the counters. ECUE must be set back to zero and another 0 to 1 transition must occur for
subsequent reads/resets of the ECR registers. Note that the DS21348 can report errors at RNEG when in
NRZ mode (CCR1.6 = 1) by outputting a pulse for each error occurrence. The counter saturates at 65,535
and will not rollover.
ECR1 (11H): UPPER ERROR COUNT REGISTER 1
ECR2 (12H): LOWER ERROR COUNT REGISTER 2
(MSB)
E15
E7
(LSB)
E8
E0
E14
E6
E13
E5
E12
E4
E11
E3
E10
E2
E9
E1
ECR1
ECR2
SYMBOL
POSITION
DESCRIPTION
E15
ECR1.7
MSB of the 16-bit error count
E0
ECR2.0
LSB of the 16-bit error count
8.5 Error Insertion
When IBPV (CCR3.1) is transitioned from a zero to a one, the device waits for the next occurrence of
three consecutive ones to insert a BPV. IBPV must be cleared and set again for another BPV error
insertion. See for details on the insertion of the BPV into the datastream.
When IBE (CCR3.0) is transitioned from a zero to a one, the device will insert a logic error. IBE must be
cleared and set again for another logic error insertion. See for details on the insertion of the logic error
into the datasteam.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS21348TN+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS21348TNB | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS21348T-W | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS21349 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3.3V T1/J1 Line Interface Unit |
| DS21349DK | 功能描述:網(wǎng)絡(luò)開發(fā)工具 DS21349 Design 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 |
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