LAN9117 datasheet(51/114 Pages) MICROCHIP

부품명	LAN9117

상세설명	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller

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 2005-2016 Microchip Technology Inc.

DS00002267A-page 51

LAN9117

4.0

INTERNAL ETHERNET PHY

4.1

Top Level Functional Description

Functionally, the internal PHY can be divided into the following sections:

• 100Base-TX transmit and receive

• 10Base-T transmit and receive

• Internal MII interface to the Ethernet Media Access Controller

• Auto-negotiation to automatically determine the best speed and duplex possible

• Management Control to read status registers and write control registers

4.2

100Base-TX Transmit

The data path of the 100Base-TX is shown in Figure 4-1. Each major block is explained below.

4.2.1

4B/5B ENCODING

The transmit data passes from the MII block to the 4B/5B encoder. This block encodes the data from 4-bit nibbles to 5-

bit symbols (known as “code-groups”) according to Table 4-1. Each 4-bit data-nibble is mapped to 16 of the 32 possible

code-groups. The remaining 16 code-groups are either used for control information or are not valid.

The first 16 code-groups are referred to by the hexadecimal values of their corresponding data nibbles, 0 through F. The

remaining code-groups are given letter designations with slashes on either side. For example, an IDLE code-group is

/I/, a transmit error code-group is /H/, etc.

The encoding process may be bypassed by clearing bit 6 of register 31. When the encoding is bypassed the 5th transmit

data bit is equivalent to TX_ER.

FIGURE 4-1:

100BASE-TX DATA PATH

MAC

Tx

Driver

MLT-3

Converter

NRZI

Converter

4B/5B

Encoder

Magnetics

CAT-5

RJ45

100M

PLL

Internal

MII 25 MHz by 4 bits

TX_CLK

25MHz by

5 bits

NRZI

MLT-3

Scrambler

and PISO

125 Mbps Serial

MII

25MHz

by 4 bits

유사한 부품 번호 - LAN9117

제조업체	부품명	데이터시트	상세설명
SMSC Corporation	LAN9117	1Mb / 131P	HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER
	LAN9117	1Mb / 136P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
	LAN9117-MD	1Mb / 131P	HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER
	LAN9117-MT	1Mb / 131P	HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER
	LAN9117-MT	1Mb / 136P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller

More results

유사한 설명 - LAN9117

제조업체	부품명	데이터시트	상세설명
SMSC Corporation	LAN9117	1Mb / 136P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
SMSC Corporation	LAN9118	1Mb / 126P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Microchip Technology	LAN9118	1,015Kb / 109P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller 06/23/16
SMSC Corporation	LAN9118	1Mb / 129P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
SMSC Corporation	LAN9117	1Mb / 131P	HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER
Microchip Technology	LAN9116	1,016Kb / 109P	Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller 06/23/16
SMSC Corporation	LAN9116	1Mb / 132P	Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller
	LAN9116	1Mb / 126P	Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller
	LAN9115	219Kb / 7P	HIGHLY EFFICIENT SINGLE - CHIP 10/100 NON PCI ETHERNET CONTROLLER
	LAN9115	1Mb / 136P	Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller

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LAN9117 데이터시트(PDF) 51 Page - Microchip Technology

LAN9117 데이터시트(HTML) 51 Page - Microchip Technology

유사한 부품 번호 - LAN9117

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