ADM8511 datasheet(21/109 Pages) INFINEON

21 / 109 page

Data Sheet

Rev. 2.03, 2005-11-30

ADM8511/X

Function Description

3.1

USB Interface

USB is a likely solution when you want to use a computer to communicate with devices outside the computer. The

interface is suitable for one-of-kind and small-scale designs as well as mass-produced and standard peripheral.

The benefits to USB are easy to use, fast and reliable data transfers, flexibility, low cost and power conservation.

3.1.1

SIE

SIE (Serial Interface Engine) is used to control USB communications and check USB protocol, and then transfer

protocol to EP decoder. The SIE and USB transceivers, which provide the hardware interface to the USB cable,

together comprise the USB engine

3.1.2

USB Command & EP Decoder

The detail description is in Appendix 4.

3.2

MAC Interface

3.2.1

MII

The Media Independent Interface (MII) is an 18 wire MAC/Phy interface described in 802.3 u. The purpose of the

interface is to allow MAC layer devices to attach to a variety of Physical Layer devices through a common

interface. MII operates at either 100 Mbit/s or 10 Mbit/s, dependant on the speed of the Physical Layer. With clocks

running at either 25 MHz or 2.5 MHz, 4 bit data is clocked between the MAC and Phy, synchronous with Enable

and Error signals.

On receipt of valid data from the wire interface, RX_DV will go active signaling to the MAC that the valid data will

be presented on the RXD[3:0] pins at the speed of the RX_CLK.

On transmission of data from the MAC, TX_EN is presented to the phy indicating the presence of valid data on

TXD[3:0]. TXD[3:0] are sampled by the phy synchronous to TX_CLK during the time that TX_EN is valid.

3.2.2

Adaptive Equalizer

The amplitude and phase distortions from cable cause inter-symbol interference (ISI) which makes clock and data

recovery difficult. The adaptive equalizer is designed to closely match the inverse transfer function of the twisted-

pairs cable. The equalizer has the ability to change its equalizer frequency response according to the cable length.

The equalizer will tune itself automatically to any cable, compensating for the amplitude and phase distortion

introduced by the cable.

3.2.3

LEDs

Individual LED output is available to indicate Speed, Duplex, Collision, Transmit, and Link. These multi-function

pins are inputs during reset and LED output pins thereafter. The level of these pins during reset determines their

active output states. If a multi-function pin is pulled up during reset to select a particular function, the LED output

would become active low, and the LED circuit must be designed accordingly, and vice versa.

ADM8511 Datasheet(PDF) 21 Page - Infineon Technologies AG

ADM8511 Datasheet(HTML) 21 Page - Infineon Technologies AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL