W3150A+ WIZnet, W3150A+ Datasheet - Page 57
W3150A+
Manufacturer Part Number
W3150A+
Description
Ethernet ICs ENET CONTR TCP/IP+MAC
Manufacturer
WIZnet
Datasheet
1.W3150A.pdf
(67 pages)
Specifications of W3150A+
Rohs
yes
Product
Ethernet Transceivers
Supply Voltage - Max
3.6 V
Supply Voltage - Min
3 V
Maximum Operating Temperature
+ 80 C
Package / Case
LQFP-64
Ethernet Connection Type
10Base-T, 100Base-TX
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
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6.4. MII (Media Independent Interface)
The MII handles the data transfer between the W3150A+ and the Physical Layer Device.
The MII is composed of TX_CLK, TXE, and TXD[0:3] signals for sending data and RX_CLK, CRS, RXDV,
RXD[0:3], and COL signals for receiving data.
When sending data from the W3150A+, TXE and TXD[0:3] are output in synchronization with the falling
edges of TX_CLK input from the Physical Layer Device because Physical Layer Devices generally recognize
the rising edges of TX_CLK.
When receiving data, in general, the Physical Layer Devices output CRS, RXDV, RXD[0:3], and COL signals
in synchronization with the falling edges of RX_CLK, so the W3150A+ recognizes the signals at the rising
edges of RX_CLK.
▫ 4. Write desired value for transmission on SPDR register (SPI Data Register).
▫ 5. Configure /SS as ‘Low’ (data transfer start)
▫ 6. Wait for reception complete
▫ 7. If all data transmission ends, configure /SS as ‘High’
SPI write/read operation timing is as below.
© Copyright 2006 WIZnet Co., Inc. All rights reserved.
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