W7500x Reference Manual Version1.1.0
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automatic ARP-process(Address Resolution Protocol). But
SEND_MAC transmits data without the automatic ARP-process. In
this case, the destination hardware address is acquired from
Sn_DHAR configured by host, instead of APR-process.
0x22
SEND_KEEP
Valid only in TCP mode.
It checks the connection status by sending 1byte keep-alive
packet. If the peer cannot respond to the keep-alive packet during
timeout time, the connection is terminated and the timeout
interrupt will occur.
0x40
RECV
RECV completes the processing of the received data in Socket n
RX Buffer by using a RX read pointer register (Sn_RX_RD).
For more details, refer to Socket n RX Received Size Register
(Sn_RX_RSR), Socket n RX Write Pointer Register (Sn_RX_WR), and
Socket n RX Read Pointer Register (Sn_RX_RD).
Sn_IR (Socket n Interrupt Register)
Address Offset : 0x0020
Reset value : 0x0000_0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
res
Res
Res
res
res
res
res
res
res
res
res
res
res
res
res
res
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
res
Res
Res
res
res
Res
res
res
res
res
res
Sn_IR[4:0]
R
R
R
R
R
Sn_IR indicates the status of Socket Interrupt such as establishment, termination, receiving
data, timeout). When an interrupt occurs and the corresponding bit of Sn_IMR is ‘1’, the
corresponding bit of Sn_IR becomes ‘1’.
[0] CONNECT Interrupt - This is issued one time when the connection with peer is successful
and then Sn_SR is changed to SOCK_ESTABLISHED
[1] DISCONNECT Interrupt - This is issued when FIN or FIN/ACK packet is received.
[2] RECV Interrupt - This is issued whenever data is received from a peer.
[3] TIMEOUT Interrupt - This is issued when ARP
TO
or TCP
TO
occurs.
[4] SENDOK Interrupt - This is issued when SEND command is completed
Sn_IMR (Socket n Interrupt Mask Register)
Address Offset : 0x0024
Содержание W7500
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Страница 324: ...W7500x Reference Manual Version1 1 0 324 399 Figure 46 UART character frame ...
Страница 391: ...W7500x Reference Manual Version1 1 0 391 399 1 SSP1 must not drive the SSPTXD output in slave mode ...