Ethernet Subsystem Registers
14.5.5.16 RX7_HDP Register (offset = A3Ch) [reset = 0h]
RX7_HDP is shown in
and described in
.
CPDMA_STATERAM RX 7 CHANNEL 7 HEAD DESC POINTER *
Figure 14-104. RX7_HDP Register
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RX_HDP
R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 14-118. RX7_HDP Register Field Descriptions
Bit
Field
Type
Reset
Description
31-0
RX_HDP
R/W
0h
RX DMA Head Descriptor Pointer - Writing an RX DMA Buffer
Descriptor address to this location allows RX DMA operations in the
selected channel when a channel frame is received.
Writing to these locations when they are non-zero is an error (except
at reset).
Host software must initialize these locations to zero on reset.
1339
SPRUH73H – October 2011 – Revised April 2013
Ethernet Subsystem
Copyright © 2011–2013, Texas Instruments Incorporated