W5100 WIZnet, W5100 Datasheet - Page 52

• 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.
First method :
{
}
Second Method :
{
}
{
if (Sn_RX_RSR != 0x0000) goto Receiving Process stage;
If (Sn_IR(RECV bit) == „1‟) goto Receiving Process stage;
/* In this case, if the interrupt of Socket n is activated, interrupt occurs. Refer to
/* first, get the received size */
get_size = Sn_RX_RSR;
/* calculate offset address */
get_offset = Sn_RX_RD & gSn_RX_MASK;
/* calculate start address(physical address) */
get_start_address = gSn_RX_BASE + get_offset;
/* read head information (8 bytes) */
header_size = 8;

It can be checked as below if data is received from remote peer.

Received data can be processed as below. In case of UDP , 8byte header is attached to
receiving data. The structure of the header is as below.
Interrupt Register(IR), Interrupt Mask Register (IMR) and Socket n Interrupt Register
(Sn_IR). */
Received DATA?
Receiving Process
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