- •TABLE OF CONTENTS
- •1.1 Motivation
- •1.2 Design Goals
- •1.3 Objective of the Specification
- •1.4 Scope of the Document
- •1.5 USB Product Compliance
- •1.6 Document Organization
- •2.1 Terms
- •2.2 Conventions:
- •2.3 References
- •3.1 USB System Description
- •3.1.1 Topology
- •3.1.1.1 USB Host
- •3.1.1.2 Wireless USB Devices
- •3.2 Physical Interface
- •3.3 Power Management
- •3.4 Bus Protocol
- •3.5 Robustness
- •3.5.1 Error Handling
- •3.6 Security
- •3.7 System Configuration
- •3.7.1 Attachment of Wireless USB Devices
- •3.7.2 Removal of Wireless USB Devices
- •3.7.3 Bus Enumeration
- •3.8 Data Flow Types
- •3.9 Wireless USB Devices
- •3.9.1 Device Characterizations
- •3.9.2 Devices and MAC Layer
- •3.10 Wireless USB Host: Hardware and Software
- •4.1 Implementer Viewpoints
- •4.2 Communications Topology
- •4.2.1 Physical Topology
- •4.3 Wireless USB Communication Flows
- •4.3.1 Wireless USB Channel Time
- •4.3.2 MMC Transmission Accuracy
- •4.3.3 USB Time across Device Wire Adapters
- •4.3.5 Device Endpoints
- •4.3.6 Wireless USB Information Exchange Methods
- •4.3.7 Device Perspective
- •4.3.7.1 Self Beaconing Devices
- •4.3.7.2 Directed Beaconing Devices
- •4.3.7.3 Non Beaconing Devices
- •4.3.7.4 Selecting A Wireless USB Host
- •4.3.8 Host Perspective
- •4.3.8.1 MAC Layer Compliant Device
- •4.3.8.2 Wireless USB Host
- •4.3.8.3 Host System Management
- •4.3.8.5 Other Host Considerations
- •4.4 Data Transfers
- •4.4.1 Burst Mode Data Phase
- •4.5 Bulk Transfers
- •4.5.1 Bulk Transfer Packet Size and Signaling Rate Constraints
- •4.5.2 Bulk Transfer Channel Access Constraints
- •4.5.3 Bulk Transfer Data Sequences
- •4.6 Interrupt Transfers
- •4.6.1 Low Power Interrupt IN
- •4.6.2 Interrupt Transfer Packet Size and Signaling Rate Constraints
- •4.6.3 Interrupt Transfer Channel Access Constraints
- •4.6.4 Interrupt Transfer Data Sequences
- •4.7 Isochronous Transfers
- •4.7.1 Isochronous Transfer Packet Size and Signaling Rate Constraints
- •4.7.2 Isochronous Transfer Channel Access Constraints
- •4.7.3 Isochronous Transfer Data Sequences
- •4.7.4 Isochronous Endpoint Host System Admission Decisions
- •4.7.5 Isochronous Data Discards and Use of Isochronous Packet Discard IE
- •4.8 Control Transfers
- •4.8.1 Control Transfer Packet Size and Signaling Rate Constraints
- •4.8.2 Control Transfer Channel Access Constraints
- •4.8.3 Control Transfer Data Sequences
- •4.8.4 Data Loopback Commands
- •4.9 Device Notifications
- •4.10 Media Reliability Considerations
- •4.10.1 Transmit Power Control
- •4.10.2 Adjustments to Data Phase Packet Payload Sizes
- •4.10.3 Adjustments to Transmit Bit Rate
- •4.10.4 Changing PHY Channel
- •4.10.5 Host Schedule Control
- •4.10.6 Dynamic Bandwidth Interface Control
- •4.11 Special Considerations for Isochronous Transfers
- •4.11.1 Summary Of Key Features Of USB Wired Isochrony
- •4.11.1.1 Wireless Service Intervals
- •4.11.2 UWB Media Characteristics
- •4.11.2.1 Superframe Layout
- •4.11.2.2 Worst Case Superframe Layout – Service Interval Bounds.
- •4.11.2.3 Wireless Packet Error Rates
- •4.11.3 Wireless USB Isochronous Transfer Level Protocol
- •4.11.4 Wireless USB Isochronous IN Example
- •4.11.5 Wireless USB Isochronous OUT Example
- •4.11.6 Choosing an Isochronous IN or Isochronous OUT Endpoint Buffer Size
- •4.11.7 Isochronous OUT endpoint receiver implementation options
- •4.11.7.1 Presentation Time aware implementation
- •4.11.7.2 Presentation time aware implementation with “false” acknowledgement
- •4.11.7.3 Presentation time unaware implementations
- •4.11.8 Synchronization
- •4.11.8.1 Synchronizing a Stream Start Time
- •4.11.9 Error Handling Details
- •4.11.9.1 Reporting Data Discarded At the Transmitter
- •4.11.9.2 Discarding Data during A Burst
- •4.11.9.3 Application Handling of Discards
- •4.12 Device Reset
- •4.13 Connection Process
- •4.13.1 Reconnection Process
- •4.14 Disconnect
- •4.15 Security Mechanisms
- •4.15.1 Connection Lifetime
- •4.15.2 Host Security Considerations
- •4.15.2.1 CHID Selection
- •4.15.2.2 CDID Selection
- •4.16 Wireless USB Power Management
- •4.16.1 Device Power Management
- •4.16.1.1 Device Sleep
- •4.16.1.2 Device Wakeup
- •4.16.2 Host Power Management
- •4.16.2.1 Channel Stop
- •4.16.2.2 Remote Wakeup
- •4.16.2.3 Channel Start
- •4.17 Dual Role Devices (DRD)
- •4.17.2 Pairing P2P-DRD to establish reverse link
- •5.1 Packet Formats
- •5.2 Wireless USB Transaction Groups
- •5.2.1 Wireless USB Channel Time Allocation Information Elements
- •5.3 Transaction Group Timing Constraints
- •5.3.1 Streaming-Mode Inter-packet Constraints for the PHY
- •5.3.2 Protocol Synchronization
- •5.4 Data Burst Synchronization and Retry
- •5.5 Wireless USB Transactions
- •5.5.1 Isochronous Transactions
- •5.5.2 Control Transfers
- •5.5.3 Device Notifications
- •5.5.4 Flow Control
- •6.1 Introduction
- •6.1.1 Goal of USB Security
- •6.1.2 Security and USB
- •6.2 Overview
- •6.2.1 Base of Trust
- •6.2.2 Preserve the Nature of the USB Device Model
- •6.2.3 Implementation of Security Extensions
- •6.2.4 Encryption Methods
- •6.2.5 Message Format
- •6.2.6 Encryption Keys
- •6.2.6.1 Master Keys
- •6.2.6.2 Session Keys
- •6.2.7 Correct key determination
- •6.2.8 Replay Prevention
- •6.2.9 Secure Packet Reception
- •6.2.10 General Connection Model
- •6.2.10.1 Connection Context
- •6.2.10.2 Connection Lifetime
- •6.2.10.3 New Connection
- •6.2.10.4 Connection
- •6.2.10.5 Reconnection
- •6.2.10.6 Revocation
- •6.2.10.8 Diagnostic Support
- •6.2.10.9 Mutual Authentication
- •6.2.11 Key Management
- •6.2.11.1 PTK Management
- •6.2.11.2 GTK Management
- •6.3 Association and Authentication
- •6.3.1 Connection and Reconnection Requests
- •6.3.2 Authentication
- •6.3.2.1 Authentication Related Device Capabilities
- •6.3.2.2 Ceremonies
- •6.4.1 CCM nonce Construction
- •6.4.2 l(m) and l(a) Calculation
- •6.4.3 Counter-mode Bx Blocks
- •6.4.4 Encryption Ax Blocks
- •6.5.1 Key Derivation
- •6.5.2 Out-of-band MIC Generation
- •6.5.3 Example Random Number Generation
- •7.1 Wireless USB Device States
- •7.1.1 UnConnected
- •7.1.2 UnAuthenticated
- •7.1.3 Authenticated
- •7.1.4 Reconnecting
- •7.2 Generic Wireless USB Device Operations
- •7.3 Standard Wireless USB Device Requests
- •7.3.1 Wireless USB Extensions to Standard Requests
- •7.3.1.1 Clear Feature
- •7.3.1.2 Get Status
- •7.3.1.3 Set Address
- •7.3.1.4 Set Feature
- •7.3.1.5 Set Interface DS
- •7.3.1.6 Set WUSB Data
- •7.3.1.7 Data Loopback Write
- •7.3.1.8 DATA Loopback Read
- •7.3.2 Security-related Requests
- •7.3.2.1 Get Security Descriptor
- •7.3.2.2 Set Encryption
- •7.3.2.3 Get Encryption
- •7.3.2.4 Key Management
- •7.3.2.6 Set Security Data
- •7.3.2.7 Get Security Data
- •7.4 Standard Wireless USB Descriptors
- •7.4.1 Device Level Descriptors
- •7.4.1.1 Wireless USB Device Capabilities – UWB
- •7.4.2 Configuration
- •7.4.3 Endpoint
- •7.4.4 Wireless USB Endpoint Companion
- •7.4.5 Security-Related Descriptors
- •7.4.5.1 Security Descriptor
- •7.4.5.2 Key Descriptor
- •7.5 Wireless USB Channel Information Elements
- •7.5.1 Wireless USB Connect Acknowledge IE
- •7.5.2 Wireless USB Host Information IE
- •7.5.3 Wireless USB Channel Change Announcement IE
- •7.5.4 Wireless USB Device Disconnect IE
- •7.5.5 Wireless USB Host Disconnect IE
- •7.5.6 Wireless USB Release Channel IE
- •7.5.7 Wireless USB Work IE
- •7.5.8 Wireless USB Channel Stop IE
- •7.5.9 Wireless USB Device Keepalive IE
- •7.5.10 Wireless USB Isochronous Packet Discard IE
- •7.5.11 Wireless USB Reset Device IE
- •7.5.12 Wireless USB Transmit Packet Adjustment IE
- •7.6 Device Notifications
- •7.6.1 Device Connect (DN_Connect)
- •7.6.1.1 Connect Request
- •7.6.1.2 Reconnect Request
- •7.6.2 Device Disconnect (DN_Disconnect)
- •7.6.3 Device Endpoints Ready (DN_EPRdy)
- •7.6.4 Device MAS Availability Changed (DN_MASAvailChanged)
- •7.6.5 Device Sleep (DN_Sleep)
- •7.6.6 Remote Wakeup (DN_RemoteWakeup)
- •7.6.7 Device Alive (DN_Alive)
- •8.1 Operational Model
- •8.1.1 Functional Characteristics
- •8.1.2 Data Transfer Interface
- •8.1.3 Remote Pipe
- •8.1.4 Wire Adapter Functional Blocks
- •8.1.5 Downstream Port(s)
- •8.1.6 Upstream Port
- •8.1.7 Downstream Host Controller
- •8.1.8 Upstream Endpoint Controller
- •8.1.9 Remote Pipe Controller
- •8.1.9.1 RPipe Descriptor
- •8.1.9.2 Bulk OUT Overview
- •8.1.9.3 Bulk IN Overview
- •8.1.9.4 Control Transfer Overview
- •8.1.9.5 Interrupt Transfer Overview
- •8.1.9.6 Isochronous Transfer Overview
- •8.1.10 Suspend and Resume
- •8.1.10.1 DWA Suspend and Resume
- •8.1.10.2 HWA Suspend and Resume
- •8.1.11 Reset Behavior
- •8.1.12 Device Control
- •8.1.13 Buffer Configuration
- •8.2 Descriptors
- •8.3 Requests
- •8.3.1 Wire Adapter Class-Specific Requests
- •8.3.1.1 Abort RPipe
- •8.3.1.2 Clear RPipe Feature
- •8.3.1.3 Clear Wire Adapter Feature
- •8.3.1.4 Get RPipe Descriptor
- •8.3.1.5 Get RPipe Status
- •8.3.1.6 Get Wire Adapter Status
- •8.3.1.7 Set RPipe Descriptor
- •8.3.1.8 Set RPipe Feature
- •8.3.1.9 Set Wire Adapter Feature
- •8.3.1.10 Reset RPipe
- •8.3.2 Notification Information
- •8.3.3 Transfer Requests
- •8.3.3.1 Control Transfers
- •8.3.3.2 Bulk and Interrupt Transfers
- •8.3.3.3 Transfer Completion Notification
- •8.3.3.4 Transfer Result
- •8.3.3.5 Abort Transfer
- •8.4 DWA Interfaces, Descriptors and Control
- •8.4.1 DWA Isochronous Streaming Interface
- •8.4.2 DWA Isochronous Streaming Overview
- •8.4.3 DWA Descriptors
- •8.4.3.1 Device Descriptor
- •8.4.3.2 Binary Device Object (BOS) Descriptor
- •8.4.3.3 Configuration Descriptor
- •8.4.3.4 Security Descriptors
- •8.4.3.5 Interface Association Descriptor
- •8.4.3.6 Data Transfer Interface Descriptor
- •8.4.3.7 Wire Adapter Class Descriptor
- •8.4.3.8 Notification Endpoint Descriptor
- •8.4.3.9 Notification Endpoint Companion Descriptor
- •8.4.3.10 Data Transfer Write Endpoint Descriptor
- •8.4.3.11 Data Transfer Write Endpoint Companion Descriptor
- •8.4.3.12 Data Transfer Read Endpoint Descriptor
- •8.4.3.13 Data Transfer Read Endpoint Companion Descriptor
- •8.4.3.14 Isochronous Streaming Interface Descriptor
- •8.4.3.15 Isochronous Streaming OUT Endpoint Descriptor
- •8.4.3.16 Isochronous Streaming OUT Endpoint Companion Descriptor
- •8.4.3.17 Isochronous Streaming IN Endpoint Descriptor
- •8.4.3.18 Isochronous Streaming IN Endpoint Companion Descriptor
- •8.4.3.19 Wire Adapter RPipe Descriptor
- •8.4.4 DWA Specific Requests
- •8.4.4.1 Clear Port Feature
- •8.4.4.2 Get Port Status
- •8.4.4.3 Set Isochronous Endpoint Attributes
- •8.4.4.4 Set Port Feature
- •8.4.5 DWA Notification Information
- •8.4.5.1 Remote Wake
- •8.4.5.2 Port Status Change
- •8.4.6 DWA Isochronous Transfers
- •8.4.6.1 DWA Isochronous OUT Responsibilities
- •8.4.6.2 DWA Isochronous IN Responsibilities
- •8.5 HWA Interfaces, Descriptors and Control
- •8.5.1 HWA Isochronous Streaming Overview
- •8.5.2 HWA Descriptors
- •8.5.2.1 Device Descriptor
- •8.5.2.2 Device_Qualifier Descriptor
- •8.5.2.3 Configuration Descriptor
- •8.5.2.4 Other_Speed_Configuration Descriptor
- •8.5.2.5 Security Descriptors
- •8.5.2.6 Data Transfer Interface Descriptor
- •8.5.2.7 Wire Adapter Class Descriptor
- •8.5.2.8 Notification Endpoint Descriptor
- •8.5.2.9 Data Transfer Write Endpoint Descriptor
- •8.5.2.10 Data Transfer Read Endpoint Descriptor
- •8.5.2.11 Wire Adapter RPipe Descriptor
- •8.5.3 HWA Specific Requests
- •8.5.3.2 Get BPST Adjustment
- •8.5.3.3 Get BPST Time
- •8.5.3.4 Get WUSB Time
- •8.5.3.5 Remove MMC IE
- •8.5.3.6 Set Device Encryption
- •8.5.3.7 Set Device Info
- •8.5.3.8 Set Device Key
- •8.5.3.9 Set Group Key
- •8.5.3.10 Set Num DNTS Slots
- •8.5.3.11 Set WUSB Cluster ID
- •8.5.3.12 Set WUSB MAS
- •8.5.3.13 Set WUSB Stream Index
- •8.5.3.14 WUSB Channel Stop
- •8.5.4 HWA Notification Information
- •8.5.4.1 BPST Adjustment Change
- •8.5.4.2 DN Received Notification
- •8.5.5 HWA Isochronous Transfers
- •8.5.5.1 HWA Isochronous OUT Responsibilities
- •8.5.5.2 HWA Isochronous IN Responsibilities
- •8.5.5.3 HWA Isochronous Transfer Completion
- •8.6 Radio Control Interface
- •8.6.1 Radio Control Descriptors
- •8.6.1.1 Radio Control Interface Descriptor
- •8.6.1.2 Radio Control Interface Class Descriptor
- •8.6.1.3 Radio Control Interrupt Endpoint Descriptor
- •8.6.2 Radio Control Command
- •8.6.2.1 Channel Change
- •8.6.2.2 Device Address Management
- •8.6.2.4 Reset
- •8.6.2.5 Scan
- •8.6.2.6 Set Beacon Filter
- •8.6.2.9 Set Notification Filter
- •8.6.2.10 Set TX Power
- •8.6.2.11 Sleep
- •8.6.2.12 Start Beaconing
- •8.6.2.13 Stop Beaconing
- •8.6.3 Radio Control Notifications
- •8.6.3.1 Application-specific Probe IE Received Notification
- •8.6.3.2 Beacon Received Notification
- •8.6.3.3 Beacon Size Notification
- •8.6.3.4 BPOIE Change Notification
- •8.6.3.5 BP Slot Change Notification
- •8.6.3.6 BP Switch IE Received Notification
- •8.6.3.7 Device Address Conflict Notification
- •8.6.3.8 DRP Availability Changed Notification
- •8.6.3.9 DRP Notification
- •A.1 Key Derivation
- •A.2 Handshake MIC calculation
- •A.3 Secure MMC (EO = payload length)
- •A.4 Data IN from device (EO = 2)
- •B.1 Descriptors for DWA
- •B.2 Descriptors for HWA
Chapter 8 |
|
Wire Adapter |
Wireless Universal Serial Bus Specification, Revision 1.0 |
8.6.1.2 Radio Control Interface Class Descriptor
This descriptor describes the characteristics of the Radio Control Interface to host software.
Table 8-61. Radio Control Interface Class Descriptor
Offset |
Field |
Size |
Value |
Description |
|
|
|
|
|
0 |
bLength |
1 |
4 |
Size of this descriptor in bytes, including this field. |
|
|
|
|
|
1 |
bDescriptorType |
1 |
23H |
Radio Control Descriptor Type |
|
|
|
|
|
2 |
bcdRCIVersion |
2 |
0100H |
Radio Control Interface Version number in Binary- |
|
|
|
|
Coded Decimal. |
8.6.1.3 Radio Control Interrupt Endpoint Descriptor
This endpoint is used to report status and results of the radio control commands. It is also used to send UWB Radio notifications back to the host software.
Table 8-62. Radio Control Interrupt Endpoint Descriptor
Offset |
Field |
Size |
Value |
Description |
|
|
|
|
|
0 |
bLength |
1 |
7 |
Size of this descriptor in bytes, including this field. |
|
|
|
|
|
1 |
bDescriptorType |
1 |
5 |
ENDPOINT Descriptor Type |
|
|
|
|
|
2 |
bEndpointAddress |
1 |
Number |
The address of this endpoint |
|
|
|
|
|
3 |
bmAttributes |
1 |
Bitmap |
Interrupt endpoint of 00000011b. |
|
|
|
|
|
4 |
wMaxPacketSize |
2 |
200H |
Maximum packet size this endpoint |
|
|
|
|
|
6 |
bInterval |
1 |
1 |
Interval for polling endpoint for data transfers. |
|
|
|
|
Expressed in frames or microframes depending on |
|
|
|
|
the device operating speed (i.e., either 1 millisecond |
|
|
|
|
or 125 μs units). |
8.6.2 Radio Control Command
To control the UWB Radio only one control transfer command is defined. All UWB Radio Control commands are encapsulated within a Command Block defined in Table 8-65 and sent using this control transfer request. The result of the command is sent back on the Radio Control Interrupt endpoint using the Event Block defined in Table 8-66.
Table 8-63. Execute Radio Control Command
bmRequestType |
bRequest |
wValue |
wIndex |
wLength |
Data |
|
|
|
|
|
|
00100001B |
EXEC_RC_CMD |
Zero |
Interface |
Command |
Radio |
|
|
|
Number |
Length |
Control |
|
|
|
|
|
Command |
|
|
|
|
|
Block |
Table 8-64. Radio Control Request Codes
bRequest |
Value |
|
|
EXEC_RC_CMD |
40 |
|
|
256
Chapter 8 |
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Wire Adapter |
Wireless Universal Serial Bus Specification, Revision 1.0 |
Table 8-65. Radio Control Command Block (RCCB)
Offset |
Field |
Size |
Value |
Description |
|
|
|
|
|
0 |
bCommandType |
1 |
Number |
The type of Command. |
|
|
|
|
|
1 |
wCommand |
2 |
Number |
The actual command to be performed |
|
|
|
|
|
3 |
bCommandContext |
1 |
Number |
Host assigned ID for this command. |
|
|
|
|
Valid values are 1 through FEH. |
|
|
|
|
A value of FFH in this field indicates that this is a |
|
|
|
|
RESPONSE to an earlier notification. |
|
|
|
|
A value of 00H in this field is invalid. |
|
|
|
|
|
4 |
Parameter0 |
Var0 |
Number |
First parameter for this command. The size and |
|
|
|
|
value of this parameter is specific to the actual |
|
|
|
|
command, |
4 + Var0 |
Parameter1 |
Var1 |
Number |
Second parameter for this command. The size and |
|
|
|
|
value of this parameter is specific to the actual |
|
|
|
|
command, |
|
|
|
|
|
… |
|
|
|
|
|
|
|
|
|
Var |
ParameterN |
VarN |
Number |
Last parameter for this command. The size and |
|
|
|
|
value of this parameter is specific to the actual |
|
|
|
|
command, |
Table 8-66. Radio Control Event Block (RCEB)
Offset |
Field |
Size |
Value |
Description |
|
|
|
|
|
0 |
bEventType |
1 |
Number |
The type of Event |
|
|
|
|
|
1 |
wEvent |
2 |
Number |
The event that occurred. If this event was a result |
|
|
|
|
of a host issued command then this should match |
|
|
|
|
the wCommand in the RCCB. |
|
|
|
|
|
3 |
bEventContext |
1 |
Number |
If this event was a result of a host issued command |
|
|
|
|
then this should match the bCommandContext in |
|
|
|
|
the RCCB. |
|
|
|
|
A value of Zero indicates an Event that occurred |
|
|
|
|
which is not a direct result of a Radio Control |
|
|
|
|
Command. |
|
|
|
|
A value of FFH in this field is invalid. |
|
|
|
|
|
4 |
Parameter0 |
Var0 |
Number |
First parameter for this event. The size and value of |
|
|
|
|
this parameter is specific to the actual event |
4 + Var |
Parameter1 |
Var1 |
Number |
Second parameter for this event. The size and |
|
|
|
|
value of this parameter is specific to the actual |
|
|
|
|
event |
|
|
|
|
|
… |
|
|
|
|
|
|
|
|
|
Var |
ParameterN |
VarN |
Number |
Last parameter for this event. The size and value of |
|
|
|
|
this parameter is specific to the actual event |
257
Chapter 8 |
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Wire Adapter |
Wireless Universal Serial Bus Specification, Revision 1.0 |
Table 8-67. Command or Event Type
Command/Event Type |
Value |
GENERAL |
0 |
|
|
RESERVED |
01-EFH |
|
|
VENDOR_SPECIFIC |
F0-FFH |
|
|
|
Table 8-68. Command or Event |
||
|
|
|
|
|
Command/Event |
Value |
|
|
AS_PROBE_IE_RECEIVED |
0 |
|
N |
|
|
|
BEACON_RECEIVED |
1 |
||
O |
|
|
|
|
|
||
T |
BEACON_SIZE_CHANGE |
2 |
|
I |
|
|
|
BPOIE_CHANGE |
3 |
||
F |
|||
I |
BP_SLOT_CHANGE |
4 |
|
C |
|
|
|
|
|
||
A |
BP_SWITCH_IE_RECEIVED |
5 |
|
T |
DEV_ADDR_CONFLICT |
6 |
|
I |
|||
O |
DRP_AVAILABITY_CHANGE |
7 |
|
N |
|
|
|
|
|
||
S |
DRP |
8 |
|
|
Reserved |
9-15 |
|
|
|
|
|
|
CHANNEL_CHANGE |
16 |
|
|
|
|
|
|
DEV_ADDR |
17 |
|
|
|
|
|
|
GET_IE |
18 |
|
|
|
|
|
|
RESET |
19 |
|
C |
|
|
|
SCAN |
20 |
||
O |
|
|
|
|
|
||
M |
SET_BEACON_FILTER |
21 |
|
M |
|
|
|
SET_DRP_IE |
22 |
||
A |
|||
N |
SET_IE |
23 |
|
D |
|
|
|
|
|
||
S |
SET_NOTIFICATION_FILTER |
24 |
|
|
SET_TX_POWER |
25 |
|
|
|
|
|
|
SLEEP |
26 |
|
|
|
|
|
|
START_BEACONING |
27 |
|
|
|
|
|
|
STOP_BEACONING |
28 |
|
|
|
|
|
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Chapter 8 |
|
Wire Adapter |
Wireless Universal Serial Bus Specification, Revision 1.0 |
Table 8-69. Result Codes
Result Codes |
Value |
SUCCESS |
0 |
|
|
FAILURE |
1 |
|
|
FAILURE_HARDWARE |
2 |
|
|
FAILURE_NO_SLOTS |
3 |
|
|
FAILURE_BEACON_TOO_LARGE |
4 |
|
|
FAILURE_INVALID_PARAMETER |
5 |
|
|
FAILURE_UNSUPPORTED_PWR_LEVEL |
6 |
|
|
TIME_OUT |
7 |
|
|
This request is used to control the UWB Radio MAC in a device.
Upon receipt of this request, the device will perform the command indicated in the RCCB. The format of the RCCB is given in Table 8-65.
The lower byte of wIndex specifies the target interface number.
It is a Request Error if wValue is other than as specified above.
If the interface specified does not exist, then the device responds with a Request Error.
If the device is not configured, the device’s response to this request is undefined.
Each of the commands and their parameters are detailed below.
8.6.2.1 Channel Change
This command is used to inform other devices that this device is going to change the channel. The device must send a Channel Change IE in its beacons for the number of times specified in the command.
The RCCB for this command is given below.
Table 8-70. Channel Change RCCB
Offset |
Field |
Size |
Value |
Description |
|
|
|
|
|
0 |
bCommandType |
1 |
0 |
GENERAL Command Type |
|
|
|
|
|
1 |
wCommand |
2 |
16 |
CHANNEL_CHANGE Command |
|
|
|
|
|
3 |
bCommandContext |
1 |
Number |
Host assigned ID for this command. |
|
|
|
|
Valid values are 1 through FEH. |
|
|
|
|
|
4 |
bChannelChange |
1 |
Number |
Number of superframes before the device changes to the |
|
Countdown |
|
|
new channel. |
5 |
bNewChannel |
1 |
Number |
New channel number to which the device moves. The |
|
Number |
|
|
encoding of the channel number is specified in Table |
|
|
|
|
5-12. |
|
|
|
|
|
The bChannelChangeCountdown indicates the number of superframes until the device actually changes to the new channel. The device must modify the DRP Availability it sends in its beacon along with the Channel Change IE. The device must send the IE in the beacon until it completes the channel change operation. The device sets the Channel Change Countdown field in the Channel Change IE to the specified value in the first beacon, and it must decrement the countdown value by one in each subsequent superframe.
259