參數(shù)資料
型號： LXT970A
廠商： Intel Corp.
英文描述： Dual-Speed Fast Ethernet Transceiver
中文描述： 雙速度快速以太網(wǎng)收發(fā)器
文件頁數(shù)： 3/74頁
文件大小： 1061K
代理商： LXT970A
Datasheet
3
Dual-Speed Fast Ethernet Transceiver — LXT970A
Contents
1.0
2.0
Pin Assignments and Signal Descriptions
....................................................10
Functional Description
...........................................................................................18
2.1
Introduction..........................................................................................................18
2.2
Interfaces (Network Media/Protocol Support) .....................................................19
2.2.1
Twisted-Pair Interface ............................................................................19
2.2.2
Fiber Interface ........................................................................................19
2.2.3
MII Interface ...........................................................................................20
2.2.3.1 Selectable Driver Levels............................................................20
2.2.3.2 MII Data Interface......................................................................21
2.2.3.3 Repeater Mode..........................................................................24
2.2.3.4 MII Management Interface ........................................................24
2.2.4
Hardware Control Interface ....................................................................26
2.3
Operating Requirements.....................................................................................27
2.3.1
Power Supply Requirements..................................................................27
2.3.1.1 Optional MII Power Supply........................................................27
2.3.2
Reference Clock Requirements .............................................................27
2.3.2.1 Master Clock Mode ...................................................................28
2.3.2.2 Slave Clock Mode .....................................................................28
2.3.3
Bias Circuit Requirements......................................................................29
2.4
Initialization..........................................................................................................29
2.4.1
Control Mode Selection..........................................................................29
2.4.1.1 MDIO Control Mode ..................................................................29
2.4.1.2 Manual Control Mode................................................................29
2.4.2
Link Configuration ..................................................................................29
2.4.2.1 Manual Configuration ................................................................30
2.4.2.2 Auto-Negotiation/Parallel Detection ..........................................30
2.5
Monitoring Operational Status.............................................................................31
2.5.1
Monitoring Status via MII Registers........................................................31
2.5.2
Monitoring Status via Indicator Pins.......................................................32
2.6
100BASE-X Operation ........................................................................................32
2.6.1
100BASE-X MII Operations....................................................................32
2.6.2
100BASE-X Network Operations ...........................................................33
2.7
10BASE-T Operation...........................................................................................35
2.7.1
10BASE-T MII Operations......................................................................35
2.7.2
10BASE-T Network Operations..............................................................35
2.8
Protocol Sublayer Operations .............................................................................35
2.8.1
PCS Sublayer.........................................................................................35
2.8.1.1 100X Preamble Handling ..........................................................36
2.8.1.2 10T Preamble Handling.............................................................36
2.8.1.3 Data Errors (100X Only)............................................................36
2.8.1.4 Collision Indication ....................................................................37
2.8.1.5 SQE (10T Only).........................................................................38
2.8.1.6 Jabber (10T Only) .....................................................................38
2.8.2
PMA Layer..............................................................................................38
2.8.2.1 100TX Link Options...................................................................38
2.8.2.2 10T Link Test.............................................................................38
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