W90N740CD WINBOND [Winbond], W90N740CD Datasheet - Page 103

• Manufacturer Part Number: W90N740CD
• Description: 32-Bit ARM7TDMI-Based Micro-Controller
• Manufacturer: WINBOND [Winbond]

Current Receive Buffer Start Address Register (CRXBSA_0, CRXBSA_1)
CRXBSA [31:0]: Current Receive Buffer Start Address
Default value: 0000h
This register reports the start address of the current receive buffer used by EMC.
6.6
The Network Address Translation Accelerator (NATA) provides hardware acceleration function to
enhance the IP address and port number translation. An inside (local/LAN) IP address is mapped to
an outside (global/WAN) IP address, meaning that an inside IP address is replaced by the appropriate
outside IP address, and vice versa. When the network is connected and SW Users can use NATA on
W90N740 to speed up fixed (static) address translation and reduce software loading on processing
layer-3 IP replacement. The NATA has 64 entries for users to initial replacement IP content and
cooperate the 2 EMC ports to do NAT.
The Features of the NATA：
• Hardware acceleration on IP address / port number look up and replacement for network address
• Translation, including MAC address translation
• Provide 64 entries of translation table
• Support TCP / UDP packets
CRXBSA_0 0xFFF0.30D8
CRXBSA_1 0xFFF0.38D8
Register
31
23
15
7
Network Address Translation Accelerator (NATA)
Address
30
22
14
6
R/W
29
21
13
R
R
5
Current Receive Buffer Start Address Register
Current Receive Buffer Start Address Register
28
20
12
4
CRXBSA
CRXBSA
CRXBSA
CRXBSA
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W90N740CD/W90N740CDG
Description
27
19
11
3
26
18
10
2
25
17
9
1
0x0000.0000
0x0000.0000
Reset Value
24
16
8
0