K60P100M100SF2RM Datasheet, PDF (1163/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Field
31–5
Reserved
4
PROCHK
3
IPCHK
2–1
Reserved
0
SHIFT16
Chapter 44 10/100-Mbps Ethernet MAC (ENET)
ENET_TACC field descriptions
Description
This read-only field is reserved and always has the value zero.
Enables insertion of protocol checksum.
0 Checksum not inserted.
1 If an IP frame with a known protocol is transmitted, the checksum is inserted automatically into the
frame. The checksum field must be cleared. The other frames are not modified.
Enables insertion of IP header checksum.
0 Checksum is not inserted.
1 If an IP frame is transmitted, the checksum is inserted automatically. The IP header checksum field
must be cleared. If a non-IP frame is transmitted the frame is not modified.
This read-only field is reserved and always has the value zero.
TX FIFO shift-16
0 Disabled.
1 Indicates to the transmit data FIFO, that the written frames contain two additional octets before the
frame data. This means the actual frame starts at bit 16 of the first word written into the FIFO. This
function allows putting the frame payload on a 32-bit boundary in memory, as the 14-byte Ethernet
header is extended to a 16-byte header.
44.3.32 Receive Accelerator Function Configuration (ENET_RACC)
Address: ENET_RACC is 400C_0000h base + 1C4h offset = 400C_01C4h
Bit 31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
0
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
0
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ENET_RACC field descriptions
Field
31–8
Reserved
Description
This read-only field is reserved and always has the value zero.
Table continues on the next page...
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
1163