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| 型號(hào)： | DS26518NB1+ |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 278/312頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX T1/E1/J1 8PORT 256-CSBGA |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 8/8 |
| 規(guī)程： | T1/E1/J1 |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 256-BGA，CSBGA |
| 供應(yīng)商設(shè)備封裝： | 256-CSBGA（17x17） |
| 包裝： | 托盤 |
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DS26518 8-Port T1/E1/J1 Transceiver
68 of 312
9.9.9.2 Path Code Violation Count Register (PCVCR)
In T1 operation, the Path Code Violation Count Register records either Ft, Fs, or CRC-6 errors. When the receive
side of a framer is set to operate in the T1 ESF framing mode, PCVCR will record errors in the CRC-6 codewords.
When set to operate in the T1 D4 framing mode, PCVCR will count errors in the Ft framing bit position. Via the
ERCNT.2 bit, a framer can be programmed to also report errors in the Fs framing bit position. The PCVCR will be
disabled during receive loss of synchronization (RLOF = 1) conditions. See Table 9-30 for a detailed description of
exactly what errors the PCVCR counts in T1 operation.
In E1 operation, the Path Code Violation Count Register records CRC-4 errors. Since the maximum CRC-4 count
in a one second period is 1000, this counter cannot saturate. The counter is disabled during loss of sync at either
the FAS or CRC-4 level; it will continue to count if loss of multiframe sync occurs at the CAS level.
The Path Code Violation Count Register 1 (PCVCR1) is the most significant word and the Path Code Violation
Count Register 2 (PCVCR2) is the least significant word of a 16-bit counter that records path violations (PVs).
Table 9-30. T1 Path Code Violation Counting Arrangements
FRAMING MODE
COUNT Fs ERRORS?
WHAT IS COUNTED IN
D4
No
Errors in the Ft pattern
D4
Yes
Errors in both the Ft and Fs patterns
ESF
Don’t Care
Errors in the CRC-6 codewords
9.9.9.3 Frames Out of Sync Count Register (FOSCR)
The FOSCR is used to count the number of multiframes that the receive synchronizer is out of sync. This number is
useful in ESF applications needing to measure the parameters loss of frame count (LOFC) and ESF error events
as described in AT&T publication TR54016. When the FOSCR is operated in this mode, it is not disabled during
receive loss of synchronization (RLOF = 1) conditions. The FOSCR has alternate operating mode whereby it will
count either errors in the Ft framing pattern (in the D4 mode) or errors in the FPS framing pattern (in the ESF
mode). When the FOSCR is operated in this mode, it is disabled during receive loss of synchronization (RLOF = 1)
conditions. See Table 9-31 for a detailed description of what the FOSCR is capable of counting.
In E1 mode, the FOSCR counts word errors in the frame alignment signal in time slot 0. This counter is disabled
when RLOF is high. FAS errors will not be counted when the framer is searching for FAS alignment and/or
synchronization at either the CAS or CRC-4 multiframe level. Since the maximum FAS word error count in a one-
second period is 4000, this counter cannot saturate.
The Frames Out of Sync Count Register 1 (FOSCR1) is the most significant word and the Frames Out of Sync
Count Register 2 FOSCR2 is the least significant word of a 16-bit counter that records frames out of sync.
Table 9-31. T1 Frames Out of Sync Counting Arrangements
FRAMING MODE
COUNT MOS OR F-BIT ERRORS
(ERCNT.1)
WHAT IS COUNTED
D4
MOS
Number of multiframes out of sync
D4
F-Bit
Errors in the Ft pattern
ESF
MOS
Number of multiframes out of sync
ESF
F-Bit
Errors in the FPS pattern
9.9.9.4 E-Bit Counter (EBCR)
This counter is only available in E1 mode. The E-Bit Count Register 1 (E1EBCR1) is the most significant word and
the E-Bit Count Register 2 (E1EBCR2) is the least significant word of a 16-bit counter that records far-end block
errors (FEBE) as reported in the first bit of frames 13 and 15 on E1 lines running with CRC-4 multiframe. These
count registers will increment once each time the received E-bit is set to zero. Since the maximum E-bit count in a
one-second period is 1000, this counter cannot saturate. The counter is disabled during loss of sync at either the
FAS or CRC-4 level; it will continue to count if loss of multiframe sync occurs at the CAS level.
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PDF描述 |
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| DS26519GN+ | IC TXRX T1/E1/J1 16PRT 484-HSBGA |
| DS26521L+ | IC TXRX T1/E1/J1 64-LQFP |
| DS26522GN+ | IC TXRX T1/E1/J1 DUAL 144CSBGA |
| DS26524GNA5+ | IC TXRX T1/E1/J1 QUAD 256-CSBGA |
| DS26528GNA5+ | IC TXRX T1/E1/J1 OCT 256-CSBGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS26518NB1+ | 功能描述:IC TXRX T1/E1/J1 8PORT 256-CSBGA RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:25 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:16-PDIP 包裝:管件 |
| DS26519 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:16-Port T1/E1/J1 Transceiver |
| DS26519DK | 功能描述:網(wǎng)絡(luò)開發(fā)工具 DS26519 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(píng)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 |
| DS26519G | 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 |
| DS26519G+ | 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 |
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