LAN9211 datasheet(15/147 Pages) SMSC

15 / 147 page

High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support

Datasheet

SMSC LAN9211

Revision 2.9 (03-01-12)

DATASHEET

2.1

Pin List

Note: The pin names for the twisted pair pins shown above apply to a normal connection. If HP Auto-

MDIX is enabled and a reverse connection is detected, or a reverse connection is manually

selected, the input pins become outputs, and vice-versa, as indicated in the descriptions.

Table 2.1 Host Bus Interface Signals

NAME

SYMBOL

BUFFER

TYPE

PINS

DESCRIPTION

Host Data

D[15:0]

I/O8

Bi-directional data port.

Host Address

A[7:1]

7-bit Address Port. Used to select Internal CSR’s and

TX and RX FIFOs.

Read Strobe

nRD

Active low strobe to indicate a read cycle.

Write Strobe

nWR

Active low strobe to indicate a write cycle. This signal,

qualified with nCS, is also used to wakeup the

LAN9211 when it is in a reduced power state.

Chip Select

nCS

Active low signal used to qualify read and write

operations. This signal qualified with nWR is also used

to wakeup the LAN9211 when it is in a reduced power

state.

Interrupt

Request

IRQ

O8/OD8

Programmable Interrupt request. Programmable

polarity, source and buffer types.

FIFO Select

FIFO_SEL

When driven high all accesses to the LAN9211 are to

the RX or TX Data FIFOs. In this mode, the A[7:3]

upper address inputs are ignored.

Table 2.2 LAN Interface Signals

NAME

SYMBOL

BUFFER

TYPE

NUM

PINS

DESCRIPTION

TPO+

Transmit Positive Output (normal)

Receive Positive Input (reversed)

TPO-

Transmit Negative Output (normal)

Receive Negative Input (reversed)

TPI+

Receive Positive Input (normal)

Transmit Positive Input (reversed)

TPI-

Receive Negative Input (normal)

Transmit Negative Output (reversed)

PHY External Bias

Resistor

EXRES1

Must be connected to ground through a 12.4K

ohm 1% resistor.

LAN9211 Datasheet(PDF) 15 Page - SMSC Corporation

LAN9211 Datasheet(HTML) 15 Page - SMSC Corporation

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