LAN9250 datasheet(106/421 Pages) MICROCHIP

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LAN9250 데이터시트(PDF) 106 Page - Microchip Technology

부품명	LAN9250

상세설명	Integrated Ethernet PHY with HP Auto-MDIX

PDF	421 Pages

Scroll/Zoom	100%

제조업체	MICROCHIP [Microchip Technology]

홈페이지	http://www.microchip.com

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106 / 421 page

LAN9250

DS00001913A-page 106

 2015 Microchip Technology Inc.

9.5.6.3

Internal Register Data Access

The figures in this section detail typical internal register data read and write cycles in indexed address mode for 16 and

8-bit modes. This includes an index register write followed by either a data read or write.

16-BIT READ

One of the Index Registers is set as described above. The address is then set to access the lower WORD of the corre-

sponding Data Register and FIFOSEL is held low. Read data is driven on D[15:0] during RD active. The cycle repeats

for the upper WORD of the Data Register.

FIGURE 9-29:

INDEXED ADDRESSING INTERNAL REGISTER DATA ACCESS - 16-BIT READ

INDEX,1'b0

Index 15:8

D[15:8]

A[4:1]

INDEX,1'b1

8'hXX

Index 7:0

D[7:0]

8'hXX

FIFOSEL

DATA,1'b0

Data 15:8

Data 7:0

DATA,1'b1

Data 31:24

Data 23:16

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