Rx_c buffer descriptor pointer offset register, Rx_d buffer descriptor pointer offset register, Register bit assignment – Digi NS9750 User Manual
Page 417: Logic will put the next packet
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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
RX_C Buffer Descriptor Pointer Offset register
Address: A060 0A30
Register bit assignment
RX_D Buffer Descriptor Pointer Offset register
Address: A060 0A34
Bits
Access
Mnemonic
Reset
Description
D31:11
N/A
Reserved
N/A
N/A
D10:00
R
RXCOFF
0x000
Contains an 11-bit byte offset from the start of the pool C
ring. The offset is updated at the end of the RX packet, and
will have the offset to the next buffer descriptor that will
be used. RXCOFF can be used to determine where the
RX_RD
logic will put the next packet.
Table 247: RX_C Buffer Descriptor Pointer Offset register
Reserved
RXCOFF
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
Reserved
RXDOFF
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