W3150 Datasheet, PDF (21/59 Pages) List of Unclassifed Manufacturers – WIZnet’s Online Technical Support

SHAR (Source Hardware Address Register) [R/W] [0x0009 – 0x000E] [0x00]
This Register sets up the Source Hardware address.
Ex) In case of “00.08.DC.01.02.03”
0x0009
0x000A
0x000B
0x000C
0x000D
0x00
0x08
0xDC
0x01
0x02
0x000E
0x03
SIPR (Source IP Address Register) [R/W] [0x000F – 0x0012] [0x00]
This Register sets up the Source IP address.
Ex) in case of “192.168.0.3”
0x000F
0x0010
0x0011
192 (0xC0)
168 (0xA8)
0 (0x00)
0x0012
3 (0x03)
TOS (IP Type Of Service Register) [R/W] [0x0013] [0x00]
This Register sets up at the TOS Field of IP Header.
TTL (IP Time To Live Register) [R/W] [0x0014] [0x80]
This Register sets up at the TTL Field of IP Header.
IR (Interrupt Register) [R] [0x0015] [0x00]
This Register is accessed by the host processor to know the cause of an interrupt.
Any interrupt can be masked in the Interrupt Mask Register (IMR). The /INT signal retain low as long as any
unmasked signal is set, and will not go high until all unmasked bits in this Register have been cleared.
7
6
CONFLICT UNREACH
5
PPPoE
4
Reserved
3
S3_INT
2
S2_INT
1
S1_INT
0
S0_INT
Bit Symbol
Description
IP Conflict
7 CONFLICT It is set as ‘1’, when there is ARP request with same IP address as Source IP address.
This bit is cleared to ‘0’ only with Read action.
Destination unreachable
W3150 will receive ICMP(Destination Unreachable) packet if not-existing Destination IP
address is transmitted during UDP data transmission. (Refer to 5.2.2. UDP). In this case,
6 UNREACH the IP address and Port number will be saved in Unreachable IP Address (UIPR) and
Unreachable Port Register (UPORT), and the bit will be set as ‘1’. This bit will be cleared
to ‘0’ only with Read action.
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