W5100 WIZnet, W5100 Datasheet - Page 20

• Manufacturer Part Number: W5100
• Description: Ethernet ICs 3-IN-1 ENET CONTR TCP/IP+MAC+PHY
• Manufacturer: WIZnet

Specifications of W5100

• Rohs: yes
• Product: Ethernet Controllers
• Data Rate: 10 Mb/s, 100 Mb/s
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V
• Maximum Operating Temperature: + 80 C
• Package / Case: LQFP-80
• Ethernet Connection Type: 10Base-T, 100Base-TX
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Standard Supported: 802.3, 802.3u

© Copyright 2009-2010 WIZnet Co., Inc. All rights reserved.
4. Register Descriptions
4.1 Common Registers
MR (Mode Register) [R/W] [0x0000] [0x00]
This register is used for S/W reset, ping block mode, PPPoE mode and Indirect bus I/F.
Bit
7
6
5
4
3
2
1
0
RST
7
Not Used
Reserved
Reserved
Symbol
PPPoE
RST
IND
PB
AI
6
S/W Reset
If this bit is „1‟, internal register will be initialized. It will be automatically
cleared after reset.
Reserved
Reserved
Ping Block Mode
0 : Disable Ping block
1 : Enable Ping block
If the bit is set as „1‟, there is no response to the ping request.
PPPoE Mode
0 : Disable PPPoE mode
1 : Enable PPPoE mode
If you use ADSL without router or etc, you should set the bit as „1‟ to
connect to ADSL Server. For more detail, refer to the application note,
“How to connect ADSL”.
Not Used
Address Auto-Increment in Indirect Bus I/F
0 : Disable auto-increment
1 : Enable auto-increment
At the Indirect Bus I/F mode, if this bit is set as „1‟, the address will be
automatically increased by 1 whenever read and write are performed. For
more detail, refer to “6.2 Indirect Bus IF Mode”.
Indirect Bus I/F mode
5
PB
4
PPPoE
Description
3
2
AI
1
IND
0
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