W7100A WIZnet, W7100A Datasheet - Page 115

• Manufacturer Part Number: W7100A
• Description: 8-bit Microcontrollers - MCU 8051 CORE+HARDWIRED TCP/IP+MAC+PHY
• Manufacturer: WIZnet

Specifications of W7100A

• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 255 B
• Data Ram Size: 64 KB
• On-chip Adc: No
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 80 C
• Package / Case: LQFP-100
• Mounting Style: SMD/SMT
• Interface Type: UART
• Program Memory Type: Flash

© Copyright 2011 WIZnet Co., Inc. All rights reserved.
}
Run as “TCP SERVER” by LISTEN command.
{
}
changed to SOCK_SYNRECV and transmits the SYN/ACK packet. After that, the SOCKET n
makes a connection. After it makes the connection of SOCKET n, it enables the data
communication. There are two methods to confirm the connection of SOCKET n.
First method :
{
}
Second method :
{
}

First method :
{


When the status of Sn_SR is SOCK_LISTEN, if it receives a SYN packet, the status of Sn_SR is
Confirm the reception of the TCP data.
Sn_PORT = source_port;
Sn_CR = OPEN;
/* wait until Sn_SR is changed to SOCK_INIT */
if (Sn_SR != SOCK_INIT) Sn_CR = CLOSE; goto START;
/* listen SOCKET */
Sn_CR = LISTEN;
/* wait until Sn_SR is changed to SOCK_LISTEN */
if (Sn_SR != SOCK_LISTEN) Sn_CR = CLOSE; goto START;
if (Sn_IR(CON) == ‘1’) Sn_IR(CON) = ‘1’; goto ESTABLISHED stage;
/* In this case, if the interrupt of SOCKET n is activated, interrupt occurs. Refer to IR, IMR
if (Sn_SR == SOCK_ESTABLISHED) goto ESTABLISHED stage;
if (Sn_IR(RECV) == ‘1’) Sn_IR(RECV) = ‘1’; goto Receiving Process stage;
LISTEN
ESTABLISHMENT
ESTABLISHMENT : Check received data
Sn_IMR and Sn_IR. */
// sets source port number
// sets OPEN command
Ver. 1.12
115