W3150A+ WIZnet, W3150A+ Datasheet - Page 32

• Manufacturer Part Number: W3150A+
• Description: Ethernet ICs ENET CONTR TCP/IP+MAC
• Manufacturer: WIZnet

Specifications of W3150A+

• Rohs: yes
• Product: Ethernet Transceivers
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V
• Maximum Operating Temperature: + 80 C
• Package / Case: LQFP-64
• Ethernet Connection Type: 10Base-T, 100Base-TX
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

Sn_MSS (Socket n Maximum Segment Size Register) [R/W] [0x0412-0x0413, 0x0512-0x0513, 0x0612-
0x0613, 0x0712-0x0713] [0x0000]
This register is used for MSS (Maximum Segment Size) of a Packet.
According to communication mode, this register has different values.
Ex) 1. In normal TCP mode, MSS = 1460(0x05B4)
Sn_PROTO (Socket n IP Protocol Register) [R/W] [0x0414, 0x0514, 0x0614, 0x0714] [0x00]
This IP Protocol Register is used to set up the Protocol Field of IP Header at the IP Layer RAW Mode. There
are several protocol numbers defined in advance by registering to IANA. For the overall list of upper level
protocol
(http://www.iana.org/assignments/protocol-numbers).
Ex) Internet Control Message Protocol (ICMP) = 0x01, Internet Group Management Protocol = 0x02
Sn_TOS (Socket n IP Type Of Service Register) [R/W] [0x0415,0x0515,0x0615,0x0715] [0x00]
This register sets up at the TOS Field of IP Header.
Sn_TTL (Socket n IP Time To Live Register) [R/W] [0x0416,0x0516,0x0616,0x0716] [0x80]
This register sets up at the TTL Field of IP Header.
Sn_TX_FSR (Socket n TX Free Size Register) [R] [0x0420-0x0421, 0x0520-0x0521, 0x0620-0x0621,
0x0720-0x0721] [0x0800]
This register notifies the information of data size that user can transmit. For data transmission, user
should check this value first and control the size of transmitting data. When checking this register, user
should
byte(0x0421,0x0521,0x0621,0x0721) later to get the correct value.
Ex) In case of 2048(0x0800) in S0_TX_FSR,
Total size can be decided according to the value of TX Memory Size Register. In the process of transmission,
it will be reduced by the size of transmitting data, and automatically increased after transmission finished.
2. In PPPoE-TCP mode, MSS = 1452(0x05AC)
3. In normal UDP mode, MSS = 1472(0x05C0)
4. In PPPoE-UDP mode, MSS = 1464(0x05B8)
Nomal TCP mode configure as below,
identification
0x0412
0x0420
0x05
0x08
read
upper
© Copyright 2006 WIZnet Co., Inc. All rights reserved.
number
0x0413
0x0421
0xB4
0x00
byte(0x0420,0x0520,0x0620,0x0720)
that
IP
is
- 31 -
using,
refer
to
online
first
documents
and
of
lower
IANA