W3150A+ WIZnet, W3150A+ Datasheet - Page 33

• 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_TX_RR (Socket n TX Read Pointer Register) [R] [0x0422-0x0423, 0x0522-0x0523, 0x0622-0x0623,
0x0722-0x0723] [0x0000]
This register shows the address that transmission is finished at the TX Memory. With the SEND command of
Socket n Command Register, it transmits data from current Sn_TX_RR to Sn_TX_WR and automatically
changes after transmission is finished. Therefore, after transmission is finished, Sn_TX_RR and Sn_TX_WR
will have same value. When reading this register, user should read upper byte (0x0422, 0x0522, 0x0622,
0x0722) first and lower byte (0x0423, 0x0523, 0x0623, 0x0723) later to get the correct value.
Sn_TX_WR (Socket n TX Write Pointer Register) [R/W] [0x0424-0x0425, 0x0524-0x0525, 0x0624-
0x0625, 0x0724-0x0725] [0x0000]
This register offers the location information to write the transmission data. When reading this register,
user should read upper byte (0x0424, 0x0524, 0x0624, 0x0724) first and lower byte (0x0425, 0x0525,
0x0625, 0x0725) later to get the correct value.
Ex) In case of 2048(0x0800) in S0_TX_WR,
But this value itself is not the physical address to write. So, the physical address should be calculated as
follow.
Now, write the transmission data to get_start_address as large as you want. (* There's a case that it
exceeds the TX memory upper-bound of the socket while writing. In this case, write the transmission data
to the upper-bound, and change the physical address to the gSn_TX_BASE. Next, write the rest of the
transmission data.)
After that, be sure to increase the Sn_TX_WR value as much as the data size, that indicates the size of
writing data. Finally, give SEND command to Sn_CR(Socket n Command Register).
Refer to the psedo code of the transmission part on 5.2.1.1. TCP Server mode if the detail is needed.
1. Socket n TX Base Address (hereafter we'll call gSn_TX_BASE) and Socket n TX Mask Address
2. The bitwise-AND operation of two values, Sn_TX_WR and gSn_TX_MASK give result the offset
3. Two values get_offset and gSn_TX_BASE are added together to give result the physical
0x0424
0x08
(hereafter we'll call gSn_TX_MASK) are calculated on TMSR value. Refer to the psedo code of the
5.1 Initialization if the detail is needed.
address(hereafter we'll call get_offset) in TX memory range of the socket.
address(hereafter, we'll call get_start_address).
© Copyright 2006 WIZnet Co., Inc. All rights reserved.
0x0425
0x00
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