W3150 Datasheet, PDF (49/59 Pages) List of Unclassifed Manufacturers – WIZnet’s Online Technical Support

6. Application Information
For the communication with MCU, W3150 provides Direct Bus I/F and Indirect Bus I/F mode. For the
communication with Ethernet PHY, MII is used.
6.1. Direct Bus I/F Mode.
Direct Bus I/F mode uses 15bit address line and 8bit data line, /CS, /RD, /WR, /INT.
6.2. Indirect Bus I/F Mode.
Indirect Bus I/F mode uses 2bit address line and 8bit data line, /CS, /RD, /WR, /INT.
[14:2], other address lines should process Pull-down.
Indirect bus I/F mode related register is as below.
Value
Symbol
Description
It performs the selection of Indirect bus I/F mode, Little/Big endian, and
0x00
MR
address automatic increase. Refer to 4. Register Description” for more
detail.
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