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參數(shù)資料
| 型號： | DS21Q50LN |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 40/87頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TRANSCEIVER E1 QD IND 100LQFP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS |
| 產(chǎn)品變化通告： | Product Discontinuation 20/Feb/2012 |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 功能： | 收發(fā)器 |
| 接口： | E1 |
| 電路數(shù)： | 4 |
| 電源電壓： | 3.14 V ~ 3.47 V |
| 電流 - 電源： | 230mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-LQFP |
| 供應(yīng)商設(shè)備封裝： | 100-LQFP（14x14） |
| 包裝： | 托盤 |
| 包括： | AIS 警報檢測器和發(fā)生器，回送功能，PRBS 發(fā)生器 / 檢測器，遠(yuǎn)程檢測器和發(fā)生器 |
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DS21Q50
45 of 87
8. PRBS GENERATION AND DETECTION
The DS21Q50 can transmit and receive the 215 - 1 PRBS pattern. This PRBS pattern complies with ITU-
T O.151 specifications. The PRBS pattern can be unframed (in all 256 bits of the frame), framed (in all
time slots except TS0), or in any single time slot. Register CCR5 contains the control bits for configuring
the transmit and receive PRBS functions. Table 8-1 and Table 8-2 show the selection criteria for transmit
and receive operation modes. In transmit and receive mode 1 operation, the transmit and receive channel-
monitor select bits of registers CCR3 and CCR4 have an alternate use. When these modes are selected,
those bits determine which time slots transmit and/or receive the PRBS pattern.
SR2.0 indicates when the receiver has synchronized to the PRBS pattern. The PRBS synchronizer
remains in sync until it experiences 6-bit errors or more within a 64-bit span. Choosing any receive mode
other than NORMAL causes the 16-bit E-bit error counter—EBCR1 and EBCR2—to be reconfigured for
counting PRBS errors.
User-definable outputs OUTA or OUTB can be configured to output a pulse for every bit error received.
See Section 15 and Table 15-1 for details. This signal can be used with external circuitry to track bit error
rates during PRBS testing. Once synchronized, any bit errors received cause a positive-going pulse,
synchronous with RCLK.
Table 8-1. Transmit PRBS Mode Select
TPRBS1
(CCR5.3)
TPBRS0
(CCR5.2)
MODE
0
Mode 0: Normal (PRBS disabled)
0
1
Mode 1: PRBS in TSx. PRBS pattern is transmitted in a single time slot
(TS). In this mode, the transmit channel-monitor select bits in register
CCR3 are used to select a time slot in which to transmit the PRBS
pattern.
1
0
Mode 2: PRBS in all but TS0. PRBS pattern is transmitted in time slots 1
through 31.
1
Mode 3: PRBS unframed. PRBS pattern is transmitted in all time slots.
Table 8-2. Receive PRBS Mode Select
RPRBS1
(CCR5.1)
RPBRS0
(CCR5.0)
MODE
0
Mode 0: Normal (PRBS disabled)
0
1
Mode 1: PRBS in TSx. PRBS pattern is received in a single time slot
(TS). In this mode, the receive channel-monitor select bits in register
CCR4 are used to select a time slot in which to receive the PRBS pattern.
1
0
Mode 2: PRBS in all but TS0. PRBS pattern is received in time slots 1
through 31.
1
Mode 3: PRBS unframed. PRBS pattern is received in all time slots.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS21Q50LN+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad E1 Transceiver 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 |
| DS21Q50L-W+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad E1 Transceiver 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 |
| DS21Q50N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| DS21Q55 | 功能描述:IC TXRX QUAD T1/E1/J1 SCT 256BGA RoHS:否 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:* |
| DS21Q552 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V Quad T1 Transceiver 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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