W90N740CD WINBOND [Winbond], W90N740CD Datasheet - Page 110

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

6.6.2.5. EHCNTx [31:16]: Counter of Packets Hit with Entry x
Default value: 0
The register is read-only, to indicate that how many packets are hit with entry x. When a new packet is
hit with entry x, the corresponding EHCNTx, will increase. The value can be reset to zero by writing
one to corresponding CLREHx in NATCCLR register.
6.6.2.6. CNTx [10:8]: Number of Entry x Hit Packets to be processed
Default value: 0x0
The register is read-only, to indicate that how many packet is hit with entry x and still not processed by
NAT. When a new packet is hit with entry x, the corresponding entry counter, CNTx, will increase. On
the other hand, when a packet hit with entry x is process, the corresponding CNTx will be decrease.
Nop [7]: Packet Nop bit
Default value: 0
Set this bit to receive current hit packet as usual. The Rx descriptor will be updated for this packet and
set the Nop bit in descriptor. This bit will be valid while Discard[6]=0.
Discard [6]: Packet Discard bit
Default value: 0
Set this bit to automatically discard current hit packet. The Rx descriptor will not be updated for this
packet. It is applicable for IP filter.
Inverse [5]: Inverse Comparison and Replacement bit
Default value: 0
Set this bit to change comparison and replacement field in packets. For example, at the WAN port,
destination address and port {DA, DP} is compared for inverse bit (I bit) clear. If I bit is set, source
address and port {SA, SP} is compared instead of {DA, DP}. It is applicable for IP filter.
PxRE [4]: Port Number Replacement Enable at Entry x
Default value: 0
Nop
31
23
15
7
Discard
30
22
14
6
Reserved
Inverse
29
21
13
5
PxRE
28
20
12
4
EHCNTx
EHCNTx
- 107 -
W90N740CD/W90N740CDG
AxRE
27
19
11
3
Publication Release Date: September. 19, 2005
PxCE
26
18
10
2
CNTx
AxCE
25
17
9
1
Revision A7
ExEN
24
16
8
0