Rainbow Electronics W90N740 - Manual (Page 142)

W90N740
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Host Controller Revision Register (HcRevision)
Register Address R/W Description Reset Value
HcRevision 0xFFF0.5000 R Host Controller Revision Register 0x0000.0010
Register: HcRevision
Bits Reset R/W Description
7-0 10h R
Revision
Indicates the Open HCI Specification revision number implemented by
the Hardware. Host Controller supports 1.0 specification.
(X.Y = XYh)
31-8 0h - Reserved. Read/Write 0's
Host Controller Control Register (HcControl)
Register Address R/W Description Reset Value
HcControl 0xFFF0.5004 R/W Host Controller Control Register 0x0000.0000
Register: HcControl
Bits Reset R/W Description
1-0 00b R/W
ControlBulkServiceRatio
Specifies the number of Control Endpoints serviced for every Bulk
Endpoint. Encoding is N-1 where N is the number of Control Endpoints
(i.e. ‘00’ = 1 Control Endpoint; ‘11’ = 3 Control Endpoints)
2 0b R/W
PeriodicListEnable
When set, this bit enables processing of the Periodic (interrupt and
isochronous) list. The Host Controller checks this bit prior to attempting
any periodic transfers in a frame.
3 0b R/W
IsochronousEnable
When clear, this bit disables the Isochronous List when the Periodic List
is enabled (so Interrupt EDs may be serviced). While processing the
Periodic List, the Host Controller will check this bit when it finds an
isochronous ED.
4 0b R/W
ControlListEnable
When set this bit enables processing of the Control list.