Cirrus Logic EP93 Series User Manual page 462

Universal Serial Bus Host Controller
EP93xx User's Guide
HcControlCurrentED
31 30
15 14
11
Address:
Default:
Definition:
Bit Description:
HcBulkHeadED
31 30
15 14
Address:
Default:
Definition:
11-22
29 28 27 26
13 12 11 10
AD
0x8002_0024
0x0000_0000
Physical address of the current endpoint descriptor of the control list.
RSVD:
AD:
29 28 27 26
13 12 11 10
AD
0x8002_0028
0x0000_0000
Copyright 2007 Cirrus Logic
25 24 23 22
AD
9 8 7 6
Reserved. Unknown During Read.
ControlCurrentED. This pointer is advanced to the next ED
after serving the present one. HC will continue processing
the list from where it left off in the last Frame. When it
reaches the end of the Control list, HC checks the
ControlListFilled of HcCommandStatus. If set, it copies the
content of HcControlHeadED to HcControlCurrentEDand
clears the bit. If not set, it does nothing. HCD is allowed to
modify this register only when the ControlListEnable of
HcControl is cleared. When set, HCD only reads the
instantaneous value of this register. Initially, this is set to
zero to indicate the end of the Control list.
25 24 23 22
AD
9 8 7 6
21 20 19 18
5 4 3 2
RSVD
21 20 19 18
5 4 3 2
RSVD
17 16
1 0
17 16
1 0
DS785UM1