Back-to-back inter-packet-gap register, Pad operation table for transmit frames – Digi NS9215 User Manual
Page 291
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E T H E R N E T C O M M U N I C A T I O N M O D U L E
Back-to-Back Inter-Packet-Gap register
www.digiembedded.com
291
PAD operation
table for transmit
frames
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B a c k - t o - B a c k I n t e r - P a c k e t - G a p r e g i s t e r
Address: A060 0408
Register
D01
R/W
Not used
0
Always write as 0.
D00
R/W
FULLD
0
Full-duplex
0
The MAC operates in half-duplex mode.
1
The MAC operates in full-duplex mode.
Bits
Access
Mnemonic
Reset
Definition
Type
AUTOP
VLANP
PADEN
Action
Any
X
X
0
No pad; check CRC
Any
0
0
1
Pad to 60 bytes; append CRC
Any
X
1
1
Pad to 64 bytes; append CRC
Any
1
0
1
If untagged, pad to 60 bytes; append CRC
If VLAN tagged, pad to 64 bytes; append CRC
Reserved
IPGT
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Reserved