Hccontrolcurrented register, Register bit assignment, Table 431: hccontrolheaded register – Digi NS9750 User Manual
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U S B h o s t b l o c k r e g i s t e r s
7 4 2
N S 9 7 5 0 H a r d w a r e R e f e r e n c e
Register bit assignment
HcControlCurrentED register
Address: 9010 1024
The HcControlCurrentED register contains the physical address of the control list’s
current endpoint descriptor.
Bits
Access
Mnemonic
Reset
Description
D31:04
R/W
CHED
0h
ControlHeadED
The host controller traverses the control list starting with
the HcCOntrolHeadED pointer. The content is loaded
from the host controller communication area during the
host controller initialization.
D03:00
N/A
Not used
0
Must be written to 0.
Table 431: HcControlHeadED register
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
CCED
Not used
CCED