W7100A-64QFN WIZnet, W7100A-64QFN Datasheet - Page 93
W7100A-64QFN
Manufacturer Part Number
W7100A-64QFN
Description
8-bit Microcontrollers - MCU 8051 CORE+HARDWIRED TCP/IP+MAC+PHY
Manufacturer
WIZnet
Datasheet
1.W7100A.pdf
(156 pages)
Specifications of W7100A-64QFN
Rohs
yes
Interface Type
UART
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0x08
0x10
0x20
0x21
0x22
SEND_KEEP
SEND_MAC
DISCON
CLOSE
SEND
Sn_SR register is changed to SOCK_ESTABLIESHED and the Sn_IR(0)
becomes ‘1’.
In the following cases, the connect-request fails
Above three cases, Sn_SR is changed to SOCK_CLOSED.
Only valid in TCP mode
Regardless of “TCP SERVER” or “TCP CLIENT”, this disconnect the
process
when FIN/ACK packet is received, Sn_SR is changed to SOCK_CLOSED.
When a disconnect request is not received, TCP
and Sn_SR is changed to SOCK_CLOSED.
cf> If CLOSE is used instead of DISCON, only Sn_SR is changed to
SOCK_CLOSED without disconnect-process(disconnect-request). If a RST
packet is received from a peer during communication, Sn_SR is
unconditionally changed to SOCK_CLOSED.
Closes SOCKET n.
Sn_SR is changed to SOCK_CLOSED.
SEND command transmits remained (not transmitted) data buffered in
the TX memory. For more details, please refer to SOCKET n TX Free Size
Register (Sn_TX_FSR), SOCKET n TX Write Pointer Register(Sn_TX_WR),
and SOCKET n TX Read Pointer Register(Sn_TX_RD).
Used in UDP mode only
The basic operation is same as SEND. Normally SEND operation needs
Destination Hardware Address which can be retrieved by the ARP
(Address Resolution Protocol) process. SEND_MAC uses SOCKET n
Destination Hardware Address(Sn_DHAR) that is chosen by the user
without going through the ARP process.
Used in TCP mode
-
-
-
-
-
When a ARP timeout occurs (Sn_IR(s)=‘1’) because the
Destination Hardware Address is not acquired through the ARP
process
When a SYN/ACK packet is not received and TCP timeout
(Sn_IR(3)) is’1’
When a RST packet is received instead of a SYN/ACK packet
Active close : it transmits disconnect-request(FIN packet) to
the connected peer
Passive close : When FIN packet is received from peer, a FIN
packet is replied back to the peer
TO
occurs (Sn_IR(3)=’1’)
Ver. 1.12
93
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