參數資料
型號： 1893YI-10
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 網絡接口
英文描述： DATACOM, INTERFACE CIRCUIT, PQFP64
封裝： 10 X 10 MM, TQFP-64
文件頁數： 81/152頁
文件大?。?/td> 943K
代理商： 1893YI-10
ICS1893 Rev C 6/6/00
June, 2000
34
Chapter 6
Interface Overviews
ICS1893 Data Sheet - Release
Copyright 2000, Integrated Circuit Systems, Inc.
All rights reserved.
6.6
Clock Reference Interface
The REF_IN pin provides the ICS1893 Clock Reference Interface. The ICS1893 requires a single clock
reference with a frequency of 25 MHz ±50 parts per million. This accuracy is necessary to meet the
interface requirements of the ISO/IEEE 8802-3 standard, specifically clauses 22.2.2.1 and 24.2.3.4. The
ICS1893 supports two clock source configurations: a CMOS oscillator or a CMOS driver. The input to
REF_IN is CMOS (10% to 90% VDD), not TTL.
6.7
Configuration Interface
The following Configuration and Status Interface pins allow the ICS1893 to be completely configured and
controlled in hardware mode:
10/100SEL
ANSEL
DPXSEL
HW/SW
MII/SI
NOD/REP
RESETn
RXTRI
These pins allow the ICS1893 to accommodate the following:
10M or 100M operations
Four MAC/Repeater Interface configurations:
– 10M MII
– 100M MII
– 100M Symbol
– 10M Serial
Node or repeater applications
Full-duplex or half-duplex data links
In addition to the ISO/IEC-specified, MII control signals, the ICS1893 provides RXTRI, which is a tri-state
enable pin for the MII receive data path. When this pin is active (that is, a logic one), the following pins are
tri-stated:
RXCLK
RXD[3:0]
RXDV
RXER
Functionally, the RXTRI pin affects the MII receive channel in the same way as the Control Register’s
isolate bit, bit 0.10. (The isolate bit also affects the transmit data path.) The ICS1893 can tri-state these
seven signals for all five types of MAC/Repeater Interface configurations, not just the MII interface.
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1893YI-10LFT 功能描述:以太網 IC 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數量:2 數據速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
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1894 制造商:Pomona Electronics 功能描述:ADAPTER BNC FEMALE-BANANA PLUG 制造商:Pomona Electronics 功能描述:ADAPTER, BNC FEMALE-BANANA PLUG
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