Rainbow Electronics W90N740 - Manual (Page 74)

W90N740
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7.5.1.5 NATFSH: NAT Processing Finish
The value is 1 if current packet NAT processing is finished and successful. This bit will be written
while NATA finish the NAT processing.
NOP: No Operation
This bit indicates the packet is hit in NAT table but no need to be replaced by NATA. This bit will be
set to 1 if the packet hit the NAT table and the corresponding NOP and Discard bit of hit entry is 2’b10.
RP: Runt Packet
Set if the received packet length is less than 64 bytes.
ALIE: Alignment Error
Set if the Frame length bits are not a multiple of eight.
RXGD: Receiving Good packet received
Set if the MAC successfully receives a packet with no errors. If EnRXGD = 1, an interrupt is generated
on each time this bit is being set.
PTLE: Packet Too Long Error
Set if a received frame longer than 1518 bytes. Not set if the ALP (Accept Long Packet) bit is set.
CRCE: CRC Error
Set if the CRC at end of packet does not match the computed value, or else the PHY asserts Rx_er
during packet reception.
RXINTR: Interrupt on receive
Set if reception of packet caused an interrupt condition. This includes Good received, if the EnRXGD
is set.
NAT INFORMATION (Reserved if disabled)
31 30 29 28 27 26 25 24
Reserved TCP information
23 22 21 20 19 18 17 16
Reserved UCK_Err TU_Err NH_Err IP Header Length
15 14 13 12 11 10 9 8
Reserved Hit Entry Number
7 6 5 4 3 2 1 0
Reserved PPPCaps PPPoE UCKS UDP TCP L/W Hit
TCP information: URG (bit 29), ACK, PSH, RST, SYN, FIN (bit 24)
The six bit values show current TCP status, and are transparent to the six bits in TCP header. The
values are valid if current packet is TCP type and Hit is set.
UCK_Err: TCP/UCKS Error
TU_Err: TCP/UDP Error