- 您現在的位置：買賣IC網 > PDF目錄10993 > DS26504LN+ (Maxim Integrated Products)IC T1/E1/J1 64KCC ELEMENT 64LQFP PDF資料下載
參數資料
| 型號： | DS26504LN+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 110/129頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC T1/E1/J1 64KCC ELEMENT 64LQFP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 160 |
| 功能： | BITS 元件 |
| 接口： | 64KCC，E1，T1 |
| 電路數： | 1 |
| 電源電壓： | 3.14 V ~ 3.47 V |
| 電流 - 電源： | 150mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-LQFP |
| 供應商設備封裝： | 64-LQFP（10x10） |
| 包裝： | 托盤 |
| 包括： | * |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁當前第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁
DS26504 T1/E1/J1/64KCC BITS Element
81 of 129
13.1 LIU Operation
The LIU interfaces the T1, E1, 64KCC, and 6312kHz signals to the various types of network media
through coupling transformers. The LIU transmit and receive functions are independent. For example, the
receiver can be in T1 mode while the transmitter is in E1 mode. The 6312kHz transmission is an
exception to the other modes. For transmission, 6312kHz is only available as a 0 to 3.3V signal on the
TCLKO pin. It is not output to the TTIP and TRING pins for coupling to twisted pair. Because the G.703
specifications of the transmit pulse shape for Japanese 6312kHz are unclear, the user can externally filter
this signal to generate a sine-wave type of signal. However, on the receive side, 6312kHz can be input
through the receive transformer to the RTIP and RRING pins.
13.2 LIU Receiver
The analog AMI/HDB3 E1 waveform, AMI/B8ZS T1 waveform, or AMI 64KCC waveform is
transformer-coupled into the RTIP and RRING pins of the DS26504. The user has the option to use
internal termination, software-selectable for 75/100/110/120
Ω applications, or external termination. The
LIU recovers clock and data from the analog signal and passes it through the jitter attenuation mux.
(Note: The jitter attenuator is only available in T1 or E1 mode.) The DS26504 contains an active filter
that reconstructs the analog-received signal for the nonlinear losses that occur in long-haul T1 and E1
transmission. The receiver is configurable for various T1 and E1 monitor applications. The device has a
usable receive sensitivity of 0dB to –43dB for E1 and 0dB to –36dB for T1, which allows the device to
operate on 0.63mm (22AWG) cables up to 2.5km (E1) and 6000ft (T1) in length.
The DS26504’s LIU is designed to be fully software selectable for E1 and T1 without the need to change
any external resistors for the receive-side. The receiver will allow the user to configure the DS26504 for
75, 100, 110, 120, or 133
Ω receive termination by setting the RT0(LIC4.0), RT1(LIC4.1), and
RT2(LIC4.2). When using the internal termination feature, the resistors labeled R in Figure 13-4 should
be 60 each. If external termination is used, RT0, RT1, and RT2 should be set to zero and the resistors
labeled R in Figure 13-4 need to be 37.5, 50, 55, 60, or 66.5
Ω each, depending on the required
termination.
There are two ranges of receive sensitivity for T1 and E1, which is selectable by the user. The EGL bit of
LIC1 (LIC1.4) selects the full or limited sensitivity.
Normally, the clock that is output at the RCLK pin is the recovered clock from the waveform presented at
the RTIP and RRING inputs. If the jitter attenuator is placed in the receive path (as is the case in most
applications), the jitter attenuator restores the RCLK to an approximate 50% duty cycle. If the jitter
attenuator is either placed in the transmit path or is disabled, the RCLK output can exhibit slightly shorter
high cycles of the clock. This is due to the highly over-sampled digital clock-recovery circuitry. See the
Receive AC Timing Characteristics section for more details. When no signal is present at RTIP and
RRING, a receive loss-of-signal (RLOS) condition will occur and the signal at RCLK will be derived
from the scaled signal present on the MCLK pin.
13.2.1 Receive Level Indicator
The DS26504 reports the signal strength at RTIP and RRING in 2.5dB increments via RL3–RL0 located
in the Information Register 1 (INFO1). This feature is helpful when trouble-shooting line performance
problems.
相關PDF資料 |
PDF描述 |
|---|---|
| DS21352G | IC TXRX T1 1-CHIP 3.3V 100-BGA |
| DS2174QN+T&R | IC BERT ENHANCED 44-PLCC |
| DS2155GNC2+T&R | TXRX T1/E1/J1 SGL 100CSBGA |
| DS2155GNC2+ | IC TXRX T1/E1/J1 100-CSBGA |
| DS2155GN | IC TXRX T1/E1/J1 1-CHIP 100CSBGA |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS26504LN+ | 功能描述:計時器和支持產品 E1/T1/J1/64Kcc Bits Element RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內部定時器數量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| DS26504LN+T&R | 制造商:Maxim Integrated Products 功能描述:T1/E1/J1 ENH BITS IC LQFP LF T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC T1/E1/J1 64KCC ELEMENT 64LQFP |
| DS26504LN+T&R | 功能描述:網絡控制器與處理器 IC E1/T1/J1/64Kcc Bits Element RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS26504LNB2 | 功能描述:網絡控制器與處理器 IC E1/T1/J1/64Kcc Bits Element RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS26504LNB2+ | 功能描述:網絡控制器與處理器 IC E1/T1/J1/64Kcc Bits Element RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
發(fā)布緊急采購，3分鐘左右您將得到回復。