W90N740CD WINBOND [Winbond], W90N740CD Datasheet - Page 109

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

6.6.2.4. NATCCLR3
CLREHx (x: 63 ~ 0) [31:16]: Entry x hit counter clear bit
Default value: 0
Set the appropriate bit to clear the corresponding entry x hit counter (EHCNTx); writing zero to the bit
has no effect. About the usage of EHCNTx, please see details in NATCFGx.
CLRCNTx (x: 63 ~ 0) [15:0]: NATA Entry x counter clear bit
Default value: 0
Set the appropriate bit to clear the corresponding entry counter (CNTx); writing zero to the bit has no
effect. About the usage of CNTx, please see details in NATCFGx.
NAT Entry x Configuration Registers (NATCFGx)(x: 63 ~ 0)
All NAT Configuration registers, NATCFGx, include enable switches to control IP address and port
number comparison, or replacement. Further, additional inverse (I) bit to control source address (SA)
or destination address (DA) comparison. The NAT function is enabled if either of entry enable bits is
set, else the NAT function is disabled.
For some special applications, the user can reset the port comparison enable bits to ignore port
comparison and do only IP address comparison.
The entry count field, CNTx, is read by S/W to determine when to change either entry data without
miss hit packet processing. If S/W program wants to change some entry data, S/W program has to
disable the selected entry and monitor corresponding CNTx till the value is 0, then it is acceptable to
change new entry data. Otherwise there may be an error condition occurred, for example, when
S/W program has changed entry data, but the previous hit packet is being processed,
and cannot find replacement data.
CLRCNT63
CLRCNT55
NATCFG63
CLREH63
CLREH55
REGISTER
NATCFG0
31
23
15
7
|
CLRCNT62
CLRCNT54
CLREH62
CLREH54
0x7FF061FC
0x7FF06100
30
22
14
6
ADDRESS
|
CLRCNT61
CLRCNT53
CLREH61
CLREH53
29
21
13
5
R/W
R/W
R/W
|
CLRCNT60
CLRCNT52
CLREH60
CLREH52
28
20
12
4
NAT Entry 63 Configuration Register
NAT Entry 0 Configuration Register
- 106 -
W90N740CD/W90N740CDG
CLRCNT59
CLRCNT51
CLREH59
CLREH51
27
19
11
DESCRIPTION
3
|
CLRCNT58
CLRCNT50
CLREH58
CLREH50
26
18
10
2
CLRCNT57
CLRCNT49
CLREH57
CLREH49
25
17
9
1
RESET VALUE
0x0000.0000
0x0000.0000
CLRCNT56
CLRCNT48
CLREH56
CLREH48
|
24
16
8
0