- 您現(xiàn)在的位置：買賣IC網 > PDF目錄378615 > IDT77904D (Integrated Device Technology, Inc.) NICStAR⑩ Reference Design 155Mbps Network Interface Card (NIC) PDF資料下載
參數(shù)資料
| 型號： | IDT77904D |
| 廠商： | Integrated Device Technology, Inc. |
| 英文描述： | NICStAR⑩ Reference Design 155Mbps Network Interface Card (NIC) |
| 中文描述： | NICStAR⑩參考設計155Mbps網絡接口卡（NIC） |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 26K |
| 代理商： | IDT77904D |
IDT77904C/D/77905C/D
NICStAR Reference Design
ADVANCED INFORMATION
Commercial Temperature Range
8.14
3
The last two buses on the NICStAR are the UTOPIA
transmit and receive buses. These follow the ATM Forum’s
specification of the UTOPIA interface. They run at the PHY_CLK
speed, with the NICStAR generating the TXCLK and RXCLK
signals to the PHY device.
The PHY device used is the IDT 77155. It has the standard
transmit and receive UTOPIA interfaces, and a non-multi-
plexed utility bus for register access. The PHY utility data bus
and address bus are connected together on the eval board;
the NICStAR ALE signal defines the mode of this combined
bus in a way compatible with the NICStAR and the 77155
SWITCHStAR.
The 77155 reset input is driven by the NICStAR’s
PHY_RST# input. IDT's 77155 also provides an INT# output
which is connected to the NICStAR’s PHY_INT# input.
The 77155 transmit and receive clock reference frequency
is provided by a 19.44 MHz oscillator. This device is specified
at 10 ppm accuracy to meet the ATM Forum requirements for
155.52 Mbps operation. As with the other oscillators on the
eval board, this oscillator has a ferrite-bead power supply
filter, and a 33 Ohm source series termination resistor. End
termination is provided as part of a voltage divider network
designed to limit the input swing at the AC-coupled RRCLK
and TXCLK inputs on the 77155.
The 77155 has several control signals which are connected
to pullup and/or pulldown resistors on the eval board. Refer to
the 77155 documentation and the 77904/5 schematics for
more details. There are also several status outputs which are
not connected. One status output, RALM, goes high when any
of several different error conditions are detected by the PHY.
It is low only when a signal is present on the receive data
inputs, the 77155 is able to recover a valid clock from the
signal, and the data on the signal contains proper SONET OR
SDH frames. RALM is connected to an LED to act as a “l(fā)ink
detect” indicator.
77155 has a six-wire connection to the physical media
devices (PMD) which consists of three pairs of PECL-level
differential signals. One pair is transmit data, one pair is
receive data, and the last pair is signal detect, which can also
be connected as a single-ended PECL or CMOS signal. The
polarity of the connectors should be observed. The 77904/5
provides two PMD options (77904 and 77905), and includes
extensive termination circuitry with several possible configu-
rations to provide the best possible signal integrity between
the PHY and the PMD.
77904 Option
The 77904 interface is provided via a 9-pin fiber optical data
link (ODL) footprint which can be loaded with any standard 9-
pin ODL device. The 77904 is loaded with the Hewlett-
Packard HFBR-5103, which is a short-haul device for multi-
mode fiber, originally designed for FDDI. Other devices in the
HFBR-510x and -520x families should also work here, de-
pending on the application.
77905 Option
On the 77905 is a Micro Linear ML6672CH line interface
device intended for driving twisted-pair copper lines at high
data rates; it is characterized for 155 Mbps operation. Several
resistors and capacitors are provided on the 77905 to set
various line interface parameters on the ML6672CH. The line
interface side of the ML6672CH is connected to a Pulse
Engineering PE-68511 line interface transformer which is
designed for 155 Mbps operation over unshielded twisted pair
(UTP) cable. The connector used on the eval board is an
unshielded RJ-45 which must be low-profile to work in a
standard PC expansion slot. Unused pins on the RJ-45
connector go to a termination network to reduce crosstalk and
other forms of interference within the cable.
相關PDF資料 |
PDF描述 |
|---|---|
| IDT77905C | NICStAR⑩ Reference Design 155Mbps Network Interface Card (NIC) |
| IDT77905D | NICStAR⑩ Reference Design 155Mbps Network Interface Card (NIC) |
| IDT821054A | QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE |
| IDT821054APF | QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE |
| IDTAS4624 | 0.5ヘ LOW VOLTAGE, SINGLE SPDT ANALOG SWITCH |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| IDT77V011L155DA | 功能描述:INTERFACE DPI-UTOPIA 144-TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標準包裝:3,000 系列:- 應用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應商設備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2 |
| IDT77V011L155DA8 | 功能描述:INTERFACE DPI-UTOPIA 144-TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標準包裝:3,000 系列:- 應用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應商設備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2 |
| IDT77V106L25TF | 制造商:Integrated Device Technology Inc 功能描述: |
| IDT77V106-L25TFI | 制造商:Integrated Device Technology Inc 功能描述:ATM/SONET TRANSCEIVER, 64 Pin, Plastic, QFP |
| IDT77V252L155PG | 制造商:Integrated Device Technology Inc 功能描述:ATM/SONET SEGMENTATION AND REASSEMBLY CIRCUIT, 208 Pin, Plastic, QFP |
發(fā)布緊急采購，3分鐘左右您將得到回復。