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參數(shù)資料
| 型號： | 1894-40KLFT |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 網(wǎng)絡接口 |
| 英文描述： | DATACOM, INTERFACE CIRCUIT, QCC40 |
| 封裝： | 6 X 6 MM, ROHS COMPLIANT, QFN-40 |
| 文件頁數(shù)： | 52/52頁 |
| 文件大?。?/td> | 459K |
| 代理商： | 1894-40KLFT |
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ICS1894-40
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
PHYCEIVER
IDT / ICS 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE 9
ICS1894-40
REV C 092909
Receive Error (RXER)
RXER is asserted for one or more RXCLK periods to
indicate that an error (e.g. a coding error or any error that a
PHY is capable of detecting, and that may otherwise be
undetectable by the MAC sub-layer) was detected
somewhere in the frame presently being transferred from
the PHY. RXER transitions synchronously with respect to
RXC. While RXDV is de-asserted, RXER has no effect on
the MAC.
Carrier Sense (CRS)
CRS is asserted and de-asserted as follows:
In 10Mbps mode, CRS assertion is based on the
reception of valid preambles. CRS de-assertion is based
on the reception of an end-of-frame (EOF) marker.
In 100Mbps mode, CRS is asserted when a
start-of-stream delimiter, or /J/K symbol pair is detected.
CRS is deasserted when an end-of-stream delimiter, or
/T/R symbol pair is detected. Additionally, the PMA layer
de-asserts CRS if IDLE symbols are received without
/T/R.
Collision (COL)
COL is asserted in half-duplex mode whenever the
transmitter and receiver are simultaneously active on the
line. This is used to inform the MAC that a collision has
occurred during its transmission to the PHY.
COL transitions asynchronously with respect to TXCLK and
RXCLK.
Reduced MII (RMII) Data Interface
The Reduced Media Independent Interface (RMII) specifies
a low pin count Media Independent Interface (MII). It
provides a common interface between physical layer and
MAC layer devices, and has the following key
characteristics:
Supports 10Mbps and 100Mbps data rates.
Uses a single 50MHz reference clock provided by the
MAC or the system board.
Provides independent 2-bit wide (di-bit) transmit and
receive data paths.
Contains two distinct groups of signals: one for
transmission and the other for reception.
The ICS1894-40 is configured in RMII mode after it is
power-up or reset with the following:
A 50MHz reference clock connected to REF_IN (pin 37).
In RMII mode, unused MII signals, TXD[3:2] (pins 35, 34),
are tied to ground.
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相關代理商/技術參數(shù) |
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| 1894410000 | 制造商:Weidmuller 功能描述:CONN TERM BLOCKS SKT 4 POS 5.08MM SCRW ST PNL MNT 10A - Bulk |
| 1894419 | 功能描述:可插拔接線端子 MSTBA 2.5/ 5-G- 5,08 BK AU RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Plugs 系列:PTS 端接類型:Spring Cage 位置/觸點數(shù)量:5 線規(guī)量程:26-14 節(jié)距:5 mm 電流額定值:10 A 電壓額定值:250 V 安裝風格: 安裝角: 觸點電鍍: |
| 1894420000 | 制造商:Weidmuller 功能描述:CONN TERM BLOCKS SKT 5 POS 5.08MM SCRW ST PNL MNT 10A - Bulk |
| 1894430000 | 制造商:Weidmuller 功能描述:CONN TERM BLOCKS SKT 6 POS 5.08MM SCRW ST PNL MNT 10A - Bulk |
| 1894440000 | 功能描述:BLZ 5.08/07/270F SN OR BX 制造商:weidmuller 系列:* 零件狀態(tài):有效 標準包裝:36 |
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