- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376462 > XRT79L74 (Exar Corporation) 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC PDF資料下載
參數(shù)資料
| 型號： | XRT79L74 |
| 廠商： | Exar Corporation |
| 英文描述： | 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| 中文描述： | 4 -通道DS3/E3自動柜員機用戶到網(wǎng)絡接口/ Combo IC對購買力平價 |
| 文件頁數(shù)： | 37/70頁 |
| 文件大?。?/td> | 547K |
| 代理商： | XRT79L74 |
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頁當前第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
PRELIMINARY
XRT79L74
REV. P1.0.0
4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
35
B12
RxUClk/
RxPClk
I
Receive UTOPIA Interface Clock Input/Receive POS-PHY Interface Clock
Input:
The function of this input pin depends upon whether the XRT79L74 is operating
in the ATM UNI or PPP Mode.
ATM UNI Mode - RxUClk:
The byte (or word) data, on the Receive UTOPIA Data bus (RxUData[15:0]) is
updated on the rising edge of this signal. The Receive UTOPIA Interface can
be clocked at rates up to 50 MHz.
PPP Mode - RxPClk:
This byte (or word) data, on the Receive POS-PHY Data Bus (RxPData[15:0]) is
updated on the rising edge of this signal. The Receive POS-PHY Interface can
be clocked at rates up to 50MHz.
N
OTE
:
The user should tie this pin to GND if he/she wishes to operate the
XRT79L74 device in the Clear-Channel Framer or High-Speed HDLC
Controller Modes.
A13
RxPERR
O
Receive POS-PHY Interface - Error Indicator:
This output pin indicates whether or not the Receive PPP Packet
Processor block has detect any of the following types of erred packets
within the incoming PPP Packet data-stream.
Packets with FCS Errors
Aborted Packets
RUNT Packets
Anytime the Receive PPP Packet Processor block detects these types
of PPP Packets, then the XRT79L74 device will pulse this output pin
"high" coincident to whenever the Receive POS-PHY Interface block
outputs the very last byte or 16-bit word of the erred packet via the
"RxPData[15:0]" output pins.The XRT79L74 device will hold this output
pin "low" at all other times.
N
OTE
:
This output pin is only valid if the XRT79L74 has been configured to
operate in the PPP Mode.
C13
RxTSX/
RxPSOF
O
Receive - Start of Transfer/Receive - Start of PPP Packet in Chunk Mode:
The function of this output pin depends upon whether the XRT79L74 has been
configured to operate in the Packet Mode or Cell-Chunk Mode.
Packet Mode - RxTSX:
The XRT79L74 pulses this output pin "High" when an inband port address is
present on the RxPData[7:0] bus.
When this output pin is "High", the value of RxPData[7:0] is the address value of
the RxFIFO to be selected. Subsequent read operations, from RxPData[15:0]
will be from the RxFIFO corresponding to this inband address.
Chunk Mode - RxPSOF:
The XRT79L74 pulses this output pin "High" in order to indicate that the first
byte (or word) of a given Packet is placed on the RxPData[15:0] pins.
N
OTE
:
This output pin is only active if the XRT79L74 has been configured to
operate in the PPP Mode.
P
IN
#
N
AME
TYPE
D
ESCRIPTION
相關PDF資料 |
PDF描述 |
|---|---|
| XRT79L74IB | 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT8000ID | Clock Synchronizer/Adapter for Communications |
| XRT8000 | Clock Synchronizer/Adapter for Communications(用于通訊的時鐘同步設備/調整器) |
| XRT8001 | WAN Clock for T1 and E1 Systems |
| XRT8001ID | WAN Clock for T1 and E1 Systems |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT79L74IB | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT8000 | 制造商:EXAR 制造商全稱:EXAR 功能描述:Clock Synchronizer/Adapter for Communications |
| XRT8000_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:Clock Synchronizer/Adapter for Communications |
| XRT8000D | 制造商:EXAR 制造商全稱:EXAR 功能描述:CLOCK SYNCHRONIZER/ADAPTER FOR COMMUNICATIONS |
| XRT8000ES | 功能描述:鎖相環(huán) - PLL WAN CLOCK RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
發(fā)布緊急采購，3分鐘左右您將得到回復。