W3150A+ WIZnet, W3150A+ Datasheet - Page 55

• Manufacturer Part Number: W3150A+
• Description: Ethernet ICs ENET CONTR TCP/IP+MAC
• Manufacturer: WIZnet

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

Indirect bus I/F mode related register is as below.
In order to read or write the internal register or internal TX/RX Memory,
In order to read or write the data on the sequential address, set AI bit of MR(Mode Register). With this,
user performs above 1 only one time. Whenever read or write IDM_DR, IDM_AR value is automatically
increased by 1. So, the value can be processed on the sequential address just by continuous reading or
writing of IDM_DR.
6.3. Serial Peripheral Interface (SPI) Mode
Serial Peripheral Interface Mode uses only four pins for data communication.
Four pins are SCLK, /SS, MOSI, MISO.
W3150A+ uses one more pin for Enabling SPI Operation. This pin is SPI_EN pin.
By asserting SPI_EN pin high, A[14~11] pins turn to SCLK, /SS, MOSI, MISO pins.
Value
0x00
0x01
0x02
0x03
1. Write the address to read or write on IDM_AR0,1.
2. Read or Write IDM_DR.
IDM_AR0
IDM_AR1
IDM_DR
Symbol
MR
Figure 6-1. Connection between MCU and W3150A+
© Copyright 2006 WIZnet Co., Inc. All rights reserved.
It performs the selection of Indirect bus I/F mode, address automatic
increase. Refer to 4. Register Description for more detail.
Indirect bus I/F mode address Register
W3150A+ used in Big-endian ordering only.
Indirect bus I/F mode data Register
. In case of Big-endian ordering
Ex) In case of reading S0_CR(0x0401),
0x01
IDM_AR0 : MSB
0x01(IDM_AR0)
0x04
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Description
0x02(IDM_AR1)
0x01
0x02
IDM_AR1 : LSB