W90N740CDG Nuvoton Technology Corporation of America, W90N740CDG Datasheet - Page 69

• Manufacturer Part Number: W90N740CDG
• Description: IC MCU ARM7 TDMI 176-LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W90r

Specifications of W90N740CDG

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 80MHz
• Connectivity: EBI/EMI, Ethernet, UART/USART, USB
• Peripherals: DMA, POR, WDT
• Number Of I /o: 21
• Program Memory Type: ROMless
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 1.62 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 176-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

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.
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
NH_Err: No Hit Error
Reserved
Reserved
31
23
15
7
NAT INFORMATION (Reserved if disabled)
Reserved
Reserved
PPPCaps
UCK_Err
30
22
14
6
TU_Err
PPPoE
29
21
13
5
NH_Err
UCKS
28
20
12
4
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W90N740CD/W90N740CDG
UDP
Hit Entry Number
TCP information
27
19
11
3
IP Header Length
TCP
26
18
10
2
L/W
25
17
9
1
Hit
24
16
8
0